KR100877569B1 - Frequency generators available in the ultra-wideband and how to generate frequencies - Google Patents

Abstract

The frequency generator converts the first frequency corresponding to one of the multi-bands and the plurality of frequencies including the second and third frequencies, and the second and third frequencies, respectively, to convert the plurality of frequencies to each other. And a frequency generator configured to generate other temporary frequencies, and generate the frequency generated by mixing the first frequency and the temporary frequencies or the first frequency as an output frequency corresponding to one of the multi-bands. Accordingly, the frequency generator may generate the target frequency at a high speed by using the plurality of frequency mixers.

Description

FREQUENCY GENERATOR AND METHOD OF GENERATING FREQUENCIES USABLE IN UWB SYSTEM}

1 is a block diagram illustrating a frequency generator according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an embodiment of the frequency generator of FIG. 1.

3 is a diagram illustrating a process of generating a frequency by the frequency generator of FIG. 2.

4 is a block diagram illustrating another embodiment of the frequency generator of FIG. 1.

FIG. 5 is a diagram illustrating a process of synthesizing frequencies by the frequency generator of FIG. 4.

Embodiments of the present invention relate to a frequency generator, and more particularly, to a frequency generator capable of generating a target frequency at a high speed and a method for generating a frequency.

Ultra WideBand (UWB) has been used by the US Department of Defense as a military radio communication technology in the past, but has recently been used commercially by the Federal Communications Commission (FCC). UWB is one of the next generation wireless communication technologies using GHz frequency and can transmit a large amount of digital data in a short distance.

There are two major technical specifications under discussion in the UWB standard. One is Motorola's Direct Sequence-Code Division Multiple Access (DS-CDMA) scheme, and the other is Intel's Texas Instruments' Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) scheme.

When the MB-OFDM scheme is used, since the UWB device must use multiple bands, a frequency generator capable of synthesizing the frequency in a short time is required.

An object of the present invention is to provide a frequency generator capable of generating a target frequency at a high speed in order to solve the problems of the prior art.

Another object of the present invention is to provide a method for generating a frequency capable of generating a target frequency at a high speed.

In order to achieve the above object, the frequency generator of the present invention comprises a multi-frequency synthesizer for synthesizing a first frequency corresponding to one of the multi-bands, a plurality of frequencies including second and third frequencies, and the second and Respectively converting third frequencies to generate a plurality of different temporary frequencies, and mixing the first frequency and the temporary frequencies or the first frequency to an output frequency corresponding to one of the multi-bands. It includes a frequency generator for generating.

For example, the frequency generator may correspond to a multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra wide band (UWB) frequency generator.

According to an exemplary embodiment of the present invention, the frequency generator converts the second frequency to generate a first temporary frequency included in the temporary frequencies, and is generated by mixing the first frequency and the first temporary frequency. A first mixer for outputting a frequency corresponding to the other one of the multi bands or the first frequency as a fourth frequency, and second and third temporary frequencies included in the temporary frequencies by converting the third frequency; And a second mixing unit generated by mixing one of the fourth frequencies and the generated temporary frequency and outputting a frequency corresponding to another one of the multi bands or the fourth frequency as the output frequency. Can be.

The first mixing unit divides the second frequency to generate a first value or a negative value of the first temporary frequency and a first value of the first temporary frequency to the first frequency. Or a first mixer configured to output a frequency generated by adding a negative value or the first frequency to the fourth frequency.

The second mixing unit selects one of the third frequency and the frequency generated by dividing the third frequency, divides the selected frequency, and generates one of the second and third temporary frequencies, and the fourth The frequency generated by mixing the generated temporary frequency with the frequency or the fourth frequency may be output as the output frequency.

The second mixing unit selects one of a frequency divider for dividing the third frequency, a selector for selecting one of the third frequency and a frequency output from the frequency divider, and divides the frequency output from the selector to the second and the second. A second three-phase divider that produces a positive or negative value of one of the three temporary frequencies, and a positive or negative value of one of the second and third temporary frequencies to the fourth frequency The second mixer may include a second mixer outputting the generated frequency or the fourth frequency as the output frequency.

According to another embodiment of the present invention, the frequency generator converts the second frequency to generate one of the first and second temporary frequencies included in the temporary frequencies, and generates the first frequency and the generated frequency. A first mixing unit which is generated by mixing the temporary frequencies and outputs a frequency corresponding to another one of the multi bands or the first frequency as a fourth frequency, and a third frequency included in the temporary frequencies by converting the third frequency; A second mixing unit generating a third temporal frequency and mixing the fourth frequency and the third temporary frequency and outputting a frequency corresponding to another one of the multi bands or the fourth frequency as the output frequency; can do.

The first mixer selects one of the frequencies generated by dividing the second frequency and the second frequency, divides the selected frequency to generate one of the second and third temporary frequencies, and generates the first frequency. The frequency generated by mixing the generated temporary frequency with the frequency or the first frequency may be output as the fourth frequency.

The first mixing unit selects one of a frequency divider for dividing the second frequency, a second frequency and a frequency output from the frequency divider, and divides the frequency output from the selector so as to divide the first and second frequencies. A first three-phase divider that produces a positive or negative value of one of the second temporary frequencies, and a positive or negative of one of the first and second temporary frequencies at the first frequency It may include a first mixer for outputting the frequency generated by adding a value or the first frequency to the fourth frequency.

The second mixing unit divides the third frequency to generate a positive value or a negative value of the third temporary frequency, and a positive value of the third temporary frequency to the fourth frequency. Or a first mixer for outputting the generated frequency or the fourth frequency as the output frequency by adding a negative value.

The multi-frequency synthesizer may include a plurality of phase locked loops, and each of the phase locked loops may receive a reference frequency to generate the first to third frequencies.

In order to achieve the above another object, a method of generating a frequency of the present invention comprises combining a first frequency corresponding to one of the multi-bands and a plurality of frequencies including second and third frequencies, wherein the second and Generating a plurality of different temporary frequencies by converting third frequencies, respectively, and an output frequency corresponding to one of the multi-bands or a frequency generated by mixing the first frequency and the temporary frequencies; Generating step.

According to an embodiment of the present disclosure, generating the plurality of different temporary frequencies may include converting the second frequency to generate a first temporary frequency included in the temporary frequencies, and the third frequency. And converting to generate one of second and third temporary frequencies included in the temporary frequencies.

The generating of the generated frequency or the first frequency as an output frequency may include generating the first frequency and the first temporary frequency by mixing the first frequency and the frequency corresponding to another one of the multi bands or the first frequency. Outputting a frequency, and outputting the fourth frequency or the fourth frequency generated by mixing the fourth frequency and the generated temporary frequency and corresponding to another one of the multi-bands as the output frequency. have.

According to another embodiment of the present invention, the generating of the plurality of different temporary frequencies may include converting the second frequency to generate one of the first and second temporary frequencies included in the temporary frequencies. And converting the third frequency to generate a third temporary frequency included in the temporary frequencies.

The generating of the generated frequency or the first frequency as an output frequency may include generating the first frequency and the generated temporary frequency by mixing the first frequency and the frequency corresponding to another one of the multi bands or the first frequency. Outputting a frequency, and outputting the fourth frequency or the fourth frequency generated by mixing the fourth frequency and the third temporary frequency and corresponding to another one of the multi-bands as the output frequency. have.

Therefore, an embodiment of the present invention may generate a target frequency at a high speed using a plurality of frequency generators.

In addition, an embodiment of the present invention may perform frequency hopping at high speed using a plurality of frequency generators.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Since descriptions of embodiments of the present invention are merely illustrated for structural to functional descriptions of the present invention, the scope of the present invention should not be construed as limited by the embodiments described in the present invention. That is, the embodiments of the present invention may be variously modified and may have various forms, and thus, it should be understood that the present invention includes equivalents capable of realizing the technical idea of the present invention.

On the other hand, the meaning of the terms described in the present invention will be understood as follows.

Terms such as "first" and "second" are intended to distinguish one component from another component, and the scope of the present invention should not be limited by these terms. For example, the first component may be named a second component, and similarly, the second component may also be named a first component.

The term “and / or” should be understood to include all combinations that can be presented from one or more related items. That is, the meaning of "first item, second item and / or third item" not only includes the first, second or third item, but also from two or more of the first, second and third items. It means a combination of all possible items.

When a component is referred to as being "connected" to another component, it should be understood that there may be other components in between, although it may be directly connected to the other component. On the other hand, when a component is said to be "directly connected" to another component, it should be understood that there is no other component in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

Singular expressions described herein are to be understood to include plural expressions unless the context clearly indicates otherwise, and the terms "comprise" or "having" include elements, features, numbers, steps, operations, and elements described. It is to be understood that the present invention is intended to designate that there is a part or a combination thereof, and does not exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts or combinations thereof. .

Each step described in the present invention may occur out of the stated order unless the context clearly dictates the specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

Unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in the commonly used dictionaries should be interpreted to have meanings consistent with the meanings in the context of the related art, and shall have ideal or overly formal meanings unless expressly defined in the present application. It cannot be interpreted.

1 is a block diagram illustrating a frequency generator according to an embodiment of the present invention.

Referring to FIG. 1, the frequency generator 100 includes a frequency generator 120 including a multi-frequency synthesizer 110 and first and second mixers 122 and 124.

The multi-frequency synthesizer 110 synthesizes a plurality of frequencies including a first frequency F1 corresponding to one of the multi-bands and second and third frequencies F2 and F3.

The frequency generator 120 generates a plurality of different temporary frequencies by converting the second and third frequencies F2 and F3, respectively, and generates a frequency or a second generated by mixing the first frequency F1 and the temporary frequencies. One frequency F1 is generated with an output frequency FOUT corresponding to one of the multi-bands.

The frequency generator 100 may correspond to a multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra wide band (UWB) frequency generator.

Hereinafter, the operation of the frequency generator 100 will be described with reference to FIGS. 2 and 4.

FIG. 2 is a block diagram illustrating an embodiment of the frequency generator of FIG. 1.

Referring to FIG. 2, the frequency generator 100 includes a multi-frequency synthesizer 110, a first mixer 122, and a second mixer 124.

The multi-frequency synthesizer 110 includes first to third phase locked loops 210 to 230, and the first to third phase locked loops 210 to 230 respectively receive a reference frequency FERF. The first to third frequencies F1 to F3 are synthesized. The reference frequency FERF can be generated from an external or internal reference frequency generator (not shown).

For example, the first to third phase locked loops 210 to 230 each receive a reference frequency having 33 MHz and receive a first frequency F1 having 7128 MHz, a second frequency F2 having 5280 MHz, and 2112 MHz. The branch may generate a third frequency F3.

The first mixing unit 122 may include a first three-phase divider 240 and a first mixer 250, and converts the second frequency F2 to include a first temporary frequency included in the temporary frequencies. Is generated by mixing the first frequency (F1) and the first temporary frequency and outputs the frequency or the first frequency (F1) corresponding to the other one of the multi-band as the fourth frequency (F4).

The first three-phase divider 240 divides the second frequency F2 to generate a positive value or a negative value of the first temporary frequency. For example, the first three-phase divider 240 may generate a first temporary frequency having ± 2640 MHz by dividing the second frequency F2 having 5280 MHz based on the first control signal CON1. . The phase difference between the negative value of the frequency (eg -2640 MHz) and the positive value of the frequency (eg +2640 MHz) corresponds to 180

The first mixer 250 outputs the generated frequency or first frequency F1 as the fourth frequency F4 by adding a positive value or a negative value of the first temporary frequency to the first frequency F1. For example, the first mixer 250 may add a first temporary frequency having ± 2640 MHz to a first frequency F1 having 7128 MHz (ie, a frequency having 4488 MHz or 9768 MHz) or a first having 7128 MHz. The frequency F1 is output at the fourth frequency F4.

As a result, the first mixing unit 122 may output a fourth frequency F4 having 4488 MHz, 7128 MHz, or 9768 MHz.

The operation of the first mixing unit 122 is summarized in Table 1 below.

CON1 PLL1 output (MHz) First three-phase divider output (MHz) 1st mixer output (MHz) 00 7128 0 7128 01 7128 2640 9768 10 7128 -2640 4488 11 7128 none none

Table 1 Operation of the first mixing unit 122

The second mixer 124 includes a frequency divider 260, a selector 270, a second three-mode divider 282, and a second mixer 284, and further adds a buffer 290 as necessary. It may include.

The second mixing unit 124 converts the third frequency F3 to generate one of the second and third temporary frequencies included in the temporary frequencies, and converts the fourth frequency F4 and the generated temporary frequency. A frequency generated by mixing and corresponding to another one of the multi bands or the fourth frequency F4 is output as the output frequency FOUT.

That is, the second mixer 124 selects one of frequencies generated by dividing the third frequency F3 and the third frequency F3, and divides the selected frequency to one of the second and third temporary frequencies. And outputs the generated frequency or the fourth frequency (F4) as the output frequency (FOUT) by mixing the temporary frequency generated in the fourth frequency (F4).

The frequency divider 260 divides the third frequency F3. For example, the frequency divider 260 may divide the third frequency F3 having 2112 MHz to generate a frequency having 1056 MHz.

The selector 270 selects one of the third frequency F3 and the frequency output from the frequency divider 260. For example, the selector 270 may select a third frequency F3 having 2112 MHz and a frequency having 1056 MHz based on the control signal CON2.

The second three-phase divider 282 divides the frequency output from the selector 270 to generate a positive or negative value of one of the second and third temporary frequencies. For example, the second three-phase divider 282 divides the frequency output from the selector 270 based on the control signal CON3 (ie, a frequency having 2112 MHz or 1056 MHz) to have a second having ± 1056 MHz. Generate a temporary frequency or a third temporary frequency having ± 528 MHz.

The second mixer 284 adds a positive or negative value of one of the second and third temporary frequencies to the fourth frequency F4 and adds the generated frequency or fourth frequency F4 to the output frequency FOUT. Will output For example, the second mixer 284 adds the fourth frequency F4 to the second frequency having ± 1056 MHz or the third temporary frequency having ± 528 MHz or the fourth frequency F4 to generate the output frequency. Output to (FOUT).

As a result, the second synthesizer 124 can output an output frequency (FOUT) having 3432 MHz, 3960 MHz, 4488 MHz, 5016 MHz, 5544 MHz, 6072 MHz, 6600 MHz, 7128 MHz, 7656 MHz, 8184 MHz, 8712 MHz, 9240 MHz, 9768 MHz, 10296 MHz, or 10824 MHz. have.

3 is a diagram illustrating a process of generating a frequency by the frequency generator of FIG. 2. The operation of the second synthesizer 124 is summarized in Table 2 below.

band Fourth Frequency (F4) (MHz) Second Three-Phase Divider Output (MHz) 2nd mixer output (MHz) One 4488 -1056 3432 2 4488 -528 3960 3 4488 0 4488 4 4488 +528 5016 5 4488 +1056 5544 6 7128 -1056 6072 7 7128 -528 6600 8 7128 0 7128 9 7128 +528 7656 10 7128 +1056 8184 11 9768 -1056 8712 12 9768 -528 9240 13 9768 0 9768 14 9768 +528 10296 unused 9768 +1056 10824

Table 2 Operation of the second mixing unit 124

Meanwhile, the first and second three-phase dividers 240 and 282 and the selector 270 may receive appropriate control signals CON1, CON2, and CON3 from a controller (not shown), respectively.

4 is a block diagram illustrating another embodiment of the frequency generator of FIG. 1.

Referring to FIG. 4, the frequency generator 100 includes a multi-frequency synthesizer 110, a first mixer 122, and a second mixer 124.

The multi-frequency synthesizer 110 includes first to third phase locked loops 410 to 430, and the first to third phase locked loops 410 to 430 respectively receive a reference frequency FERF. The first to third frequencies F1 to F3 are synthesized. The reference frequency FERF can be generated from an external or internal reference frequency generator (not shown).

For example, the first to third phase locked loops 410 to 430 respectively receive a reference frequency having 33 MHz and receive a first frequency F1 having 7128 MHz, a second frequency F2 having 6336 MHz, and 1056 MHz. The branch may generate a third frequency F3.

The first mixer 122 includes a frequency divider 440, a selector 450, a first three-phase divider 462, and a first mixer 464.

The first mixer 122 converts the second frequency F2 to generate one of the first and second temporary frequencies included in the temporary frequencies, and mixes the first frequency F1 and the generated temporary frequency. And the first frequency F1 or the frequency corresponding to the other one of the multi bands is output as the fourth frequency F4.

That is, the first mixing unit 122 selects one of frequencies generated by dividing the second frequency F2 and the second frequency F2, and divides the selected frequency to one of the second and third temporary frequencies. It generates and outputs the frequency or the first frequency (F1) generated by mixing the first frequency (F1) and the temporary frequency as a fourth frequency (F4).

The frequency divider 440 divides the second frequency. For example, the frequency divider 440 may divide the second frequency F2 having 6336 MHz to generate a frequency having 3168 MHz.

The selector 450 selects one of the second frequency F2 and the frequency output from the frequency divider 440. For example, the selector 450 may select a second frequency F2 having 6336 MHz and a frequency having 3168 MHz based on the control signal CON1.

The first three-phase divider 462 divides the frequency output from the selector 450 to generate a positive or negative value of one of the second and third temporary frequencies. For example, the first three-phase divider 462 divides the frequency output from the selector 450 based on the control signal CON2 (that is, a frequency having 6336 MHz or 3168 MHz) to have a first frequency having ± 3168 MHz. Generate a temporary frequency or a second temporary frequency having ± 1584 MHz.

The first mixer 464 adds the first frequency F1 to the fourth frequency F4 by adding the positive or negative value of one of the first and second temporary frequencies to the first frequency F1. ) For example, the first mixer 264 adds the first frequency F1 or the frequency generated by adding the first temporary frequency having ± 3168 MHz or the second temporary frequency having ± 1584 MHz to the first frequency F1. The frequency can be output at F4.

As a result, the first mixing unit 122 may output a fourth frequency F4 having 3960 MHz, 5544 MHz, 7128 MHz, 8712 MHz, or 10296 MHz.

The operation of the first mixing unit 122 is summarized in Table 3 below.

First frequency F1 (MHz) First Three-Phase Divider Output (MHz) 1st mixer output (MHz) 7128 0 3960 7128 +1584 5544 7128 -1584 7128 7128 +3168 8712 7128 -3168 10296

Table 3 Operation of the first mixing unit 122

The second mixer 124 may include a second three-phase divider 480 and a second mixer 470, and convert the fourth frequency F4 to include a third temporary frequency included in the temporary frequencies. Is generated by mixing the fourth frequency (F4) and the third temporary frequency and outputs the frequency or the fourth frequency (F4) corresponding to the other one of the multi-band as the output frequency (FOUT).

The second three-phase divider 480 divides the third frequency F3 to generate a positive value or a negative value of the third temporary frequency. For example, the second three-phase divider 480 may divide a third frequency F3 having 1056 MHz based on the control signal CON3 to generate a third temporary frequency having ± 528 MHz.

The second mixer 470 outputs the generated frequency or fourth frequency F4 as the output frequency FOUT by adding the positive or negative value of the third temporary frequency to the fourth frequency F4. For example, the second mixer 470 may add a third temporary frequency having ± 528 MHz to the fourth frequency F4 having 3960 MHz (ie, a frequency having 3432 MHz or 4488 MHz) or a fourth having 3960 MHz. The frequency F4 is output at the output frequency FOUT.

As a result, the second mixing unit 124 may output an output frequency FOUT having 3432 MHz, 3960 MHz, 4488 MHz, 5016 MHz, 5544 MHz, 6072 MHz, 6600 MHz, 7128 MHz, 7656 MHz, 8184 MHz, 8712 MHz, 9240 MHz, 9768 MHz, 10296 MHz, or 10824 MHz. Can be.

FIG. 5 is a diagram illustrating a process of generating a frequency by the frequency generator of FIG. 4. The operation of the second mixing unit 124 is summarized in Table 4 below.

band Fourth Frequency (F4) (MHz) Second Three-Phase Divider Output (MHz) 2nd mixer output (MHz) One 3960 -528 3432 2 3960 0 3960 3 3960 +528 4488 4 5544 -528 5016 5 5544 0 5544 6 5544 +528 6072 7 7128 -528 6600 8 7128 0 7128 9 7128 +528 7656 10 8712 -528 8184 11 8712 0 8712 12 8712 +528 9240 13 10296 -528 9768 14 10296 0 10296 unused 10296 +528 10824

Table 2 Operation of the second mixing unit 124

Meanwhile, the first and second three-phase dividers 462 and 480 and the selector 450 may receive appropriate control signals CON1, CON2, and CON3 from a controller (not shown), respectively.

Embodiments of the present invention presented above may have an effect including the following advantages. However, all the embodiments of the present invention are not meant to include them all, and thus the scope of the present invention should not be understood as being limited thereto.

An embodiment of the present invention may generate a target frequency at high speed using a plurality of frequency generators.

In addition, an embodiment of the present invention may perform frequency hopping at high speed using a plurality of frequency generators.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (16)

A multi-frequency synthesizer for synthesizing a plurality of frequencies including a first frequency corresponding to one of the multi-bands and second and third frequencies; And Converting the second and third frequencies, respectively, to generate a plurality of different temporary frequencies, and mixing the first frequency and the temporary frequencies or the first frequency corresponding to one of the multi-bands. Including a frequency generator for generating an output frequency, The frequency generator The second frequency is converted to generate a first temporary frequency included in the temporary frequencies, and a frequency corresponding to another one of the multi bands generated by mixing the first frequency and the first temporary frequency or the first frequency. A first mixing unit outputting one frequency at a fourth frequency; And Converts the third frequency to generate one of second and third temporary frequencies included in the temporary frequencies, and the multi generated by mixing the fourth frequency and the generated second or third temporary frequency And a second mixer for outputting the fourth frequency or the fourth frequency corresponding to another one of bands. delete The method of claim 1, wherein the first mixing unit A first three-phase divider for dividing the second frequency to produce a positive or negative value of the first temporary frequency; And And a first mixer configured to output the first frequency as the fourth frequency or the frequency generated by adding a positive value or a negative value of the first temporary frequency to the first frequency. The method of claim 3, wherein the second mixing unit Selecting one of the third frequency and a frequency generated by dividing the third frequency, dividing the selected frequency to generate one of the second and third temporary frequencies, and generating the generated frequency at the fourth frequency. And a frequency generated by mixing a second or third temporary frequency or the fourth frequency as the output frequency. The method of claim 3, wherein the second mixing unit A frequency divider dividing the third frequency; A selector for selecting one of the third frequency and a frequency output from the frequency divider; A second three-phase divider for dividing a frequency output from the selector to generate a positive or negative value of one of the second and third temporary frequencies; And And a second mixer outputting the fourth frequency as the output frequency or the frequency generated by adding the positive or negative value of one of the second and third temporary frequencies to the fourth frequency. Frequency generator. A multi-frequency synthesizer for synthesizing a plurality of frequencies including a first frequency corresponding to one of the multi-bands and second and third frequencies; And Converting the second and third frequencies, respectively, to generate a plurality of different temporary frequencies, and mixing the first frequency and the temporary frequencies or the first frequency corresponding to one of the multi-bands. Including a frequency generator for generating an output frequency, The frequency generator Converting the second frequency to generate one of the first and second temporary frequencies included in the temporary frequencies, and the multi generated by mixing the first frequency and the generated first or second temporary frequency A first mixing unit outputting a frequency corresponding to the other one of the bands or the first frequency at a fourth frequency; And Converts the third frequency to generate a third temporary frequency included in the temporary frequencies, and a frequency corresponding to another one of the multi bands generated by mixing the fourth frequency and the third temporary frequency; And a second mixer for outputting a fourth frequency at the output frequency. delete delete delete The method of claim 1 or 6, wherein the multi-frequency synthesis unit And a plurality of phase locked loops, each of the phase locked loops receiving the reference frequency to generate the first to third frequencies. 7. The frequency generator of claim 1 or 6, wherein the frequency generator corresponds to a multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra wide band (UWB) frequency generator. Synthesizing a first frequency corresponding to one of the multi-bands and a plurality of frequencies comprising second and third frequencies; Converting the second and third frequencies, respectively, to generate a plurality of different temporary frequencies; And Generating a frequency generated by mixing the first frequency and the temporary frequencies or the first frequency as an output frequency corresponding to one of the multi-bands, Generating the plurality of different temporary frequencies Converting the second frequency to generate a first temporary frequency included in the temporary frequencies; And Converting the third frequency to generate one of the second and third temporary frequencies included in the temporary frequencies. delete The method of claim 12, wherein the generating of the generated frequency or the first frequency as an output frequency Outputting a frequency corresponding to another one of the multi-bands generated by mixing the first frequency and the first temporary frequency or the first frequency as a fourth frequency; And And outputting the fourth frequency or the fourth frequency corresponding to another one of the multi bands generated by mixing the fourth frequency and the generated second or third temporary frequency as the output frequency. How to. Synthesizing a first frequency corresponding to one of the multi-bands and a plurality of frequencies comprising second and third frequencies; Converting the second and third frequencies, respectively, to generate a plurality of different temporary frequencies; And Generating a frequency generated by mixing the first frequency and the temporary frequencies or the first frequency as an output frequency corresponding to one of the multi-bands, Generating the plurality of different temporary frequencies Converting the second frequency to generate one of the first and second temporary frequencies included in the temporary frequencies; And Converting the third frequency to generate a third temporary frequency included in the temporary frequencies. 16. The method of claim 15, wherein generating the generated frequency or the first frequency as an output frequency Outputting a frequency corresponding to another one of the multi bands generated by mixing the first frequency and the generated first or second temporary frequency or the first frequency as a fourth frequency; And And outputting the fourth frequency or the fourth frequency as the output frequency corresponding to another one of the multi bands generated by mixing the fourth frequency and the third temporary frequency.

Images