CN106654485B - Microwave frequency band ultra-large delay method and system - Google Patents
Microwave frequency band ultra-large delay method and system Download PDFInfo
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- CN106654485B CN106654485B CN201611044445.5A CN201611044445A CN106654485B CN 106654485 B CN106654485 B CN 106654485B CN 201611044445 A CN201611044445 A CN 201611044445A CN 106654485 B CN106654485 B CN 106654485B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
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Abstract
The invention discloses a microwave frequency band ultra-large delay method and a system, wherein the method comprises the following steps: (1) dividing one local oscillation signal into two paths to form two coherent local oscillation signals; (2) inputting a high-frequency microwave signal and a local oscillator signal, and performing down-conversion to a low-frequency microwave signal; (3) carrying out ultra-large time delay on the low-frequency microwave signal; (4) up-converting the low-frequency microwave signal subjected to the ultra-large delay and the other local oscillator signal into an original high-frequency microwave signal, wherein the whole output signal contains an intermodulation component; (5) and (4) filtering intermodulation components of the microwave signal output in the step (4) and reserving a useful signal. The microwave frequency band ultra-large delay system is sequentially connected with a first frequency mixer, an ultra-large delay device, a second frequency mixer and a filter, wherein the first frequency mixer and the second frequency mixer are jointly connected with a high-isolation power divider. The method and the system can realize the ultra-large time delay of the microwave frequency band, particularly the millimeter wave frequency, have good standing wave and insertion loss characteristics, and can meet the requirements of various microwave components.
Description
Technical Field
The invention relates to the fields of microwave communication, radar and the like, in particular to a microwave frequency band ultra-large delay method and a microwave frequency band ultra-large delay system.
Background
Real-time delay lines are widely used in electronic, communication and other systems, and are one of the key components. However, it is difficult to realize ultra-large delay (tens of nanoseconds, more than nearly one hundred wavelengths) in microwave frequency bands, especially millimeter wave frequency bands, the insertion loss can reach tens of decibels, the size takes X wave band, one hundred wavelengths as an example, the length can reach tens of meters, and the application is completely difficult, however, the requirement similar to ultra-large delay still exists in practical application. The acoustic surface device can realize super-large time delay (or other large time delay devices such as bulk acoustic waves, static magnetic waves and the like), but the working frequency of the acoustic surface device is often limited, and the acoustic surface device cannot work in a frequency band with very high frequency such as microwaves, particularly millimeter waves and the like.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a microwave ultra-large delay method and a microwave ultra-large delay system, which can realize microwave frequency band ultra-large delay, have good standing wave and insertion loss characteristics and can meet the requirements of various microwave components.
The technical scheme is as follows: in order to achieve the above object, the microwave frequency band ultra-large delay method according to the present invention includes the following steps:
(1) dividing a local oscillator signal into two paths to form two paths of coherent local oscillator signals which are respectively used for up-conversion and down-conversion of an input microwave signal;
(2) the method comprises the steps that a high-frequency microwave signal is input to be mixed with a local oscillator signal, and the mixed frequency is converted into a low-frequency microwave signal in a down-conversion mode;
(3) carrying out ultra-large time delay on the low-frequency microwave signal;
(4) mixing the low-frequency microwave signal subjected to the ultra-large delay with another local oscillator signal, and performing frequency conversion to the original high-frequency microwave signal containing the intermodulation component in an up-conversion mode, wherein the whole output signal contains the intermodulation component;
(5) and (4) filtering the intermodulation component of the microwave signal containing the intermodulation component output in the step (4), and reserving a useful signal to obtain the microwave signal with the ultra-large delay.
And (3) performing down conversion in the step (2) to obtain a path of local oscillation signal minus the input high-frequency microwave signal, or to obtain a path of local oscillation signal minus the high-frequency microwave signal.
And (4) performing up-conversion on the low-frequency microwave signal subjected to ultra-large delay after adding down-conversion to another local oscillator signal.
Preferably, the microwave is a millimeter wave.
The invention relates to a microwave frequency band ultra-large delay system, which comprises:
the frequency divider is characterized by sequentially connecting a first frequency mixer, a super-large delayer, a second frequency mixer and a filter, wherein the first frequency mixer and the second frequency mixer are connected with a high-isolation power divider;
the high-isolation power divider divides a local oscillator signal into two paths to form two paths of coherent local oscillator signals which are respectively used for up-conversion and down-conversion of an input microwave signal; the phase noise of the original signal is ensured not to be deteriorated after the up-conversion and the down-conversion;
the first frequency mixer is used for down-converting the input high-frequency microwave signal and one local oscillator signal to a low-frequency microwave signal;
the ultra-large delayer receives the low-frequency microwave signal of the down-conversion of the first mixer and carries out ultra-large time delay;
the second frequency mixer up-converts the low-frequency microwave signal after the ultra-large delay and the other local oscillator signal into the original high-frequency microwave signal, and the whole output signal contains intermodulation components;
the filter is arranged at the final output end of the second mixer to filter out intermodulation components in the high-frequency microwave signal output by the second mixer, so that a useful signal is reserved, and finally, the ultra-large time delay of the microwave frequency band is realized.
Preferably, the ultra-large delayer is a sound meter delayer, a static magnetic wave delayer or other large delayer.
Preferably, the first mixer, the second mixer, the filter and the high-isolation power divider are chips or surface-mounted devices. Each module device adopts a chip or a surface-mounted device to realize a miniaturized compact structure, is beneficial to plane integration and can meet the requirements of various microwave and millimeter wave components.
Preferably, the microwave in the microwave frequency band ultra-large delay system is millimeter wave.
Has the advantages that: compared with the prior art, the invention has the following advantages: the microwave frequency band ultra-large delay method of the invention adopts a shared local oscillator signal to be divided into two paths of coherent signals, down-converts the original high-frequency microwave signal into a lower-frequency microwave signal through an up-down conversion mode and an down-down conversion mode, and then up-converts the signal into the original signal after ultra-large delay, thereby realizing ultra-large delay which is difficult to realize in the microwave frequency band, and having good standing wave and insertion loss characteristics.
Drawings
Fig. 1 is a schematic structural diagram of a microwave frequency band ultra-large delay system according to the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1, a microwave frequency band ultra-large delay method and system divides a common local oscillator signal into two paths through a high isolation power divider to form two coherent local oscillator signals, which are used for up-conversion and down-conversion of an input microwave signal respectively; one end of the high-isolation power divider is connected with the local oscillator input end of the first frequency mixer, and the other end of the high-isolation power divider is connected with the local oscillator input end of the second frequency mixer; high-frequency microwave signals such as high-frequency millimeter wave signals are input to a radio frequency input end of the first frequency mixer, mixed with one local oscillator signal divided by the high-isolation power divider, and down-converted to low-frequency microwave signals; the first mixer is connected to a super-large delayer, such as a sound surface delayer or a static magnetic wave delayer, and carries out super-large delay on a low-frequency microwave signal; the other end of the acoustic meter delayer or the static magnetic wave delayer is connected to the radio frequency input end of a second frequency mixer, the second frequency mixer divides the low-frequency microwave signal with super-large delay and the high-isolation power divider into another local oscillator signal for frequency mixing, and the local oscillator signal is up-converted to the original high-frequency microwave signal, the original high-frequency microwave signal is the high-frequency microwave signal input to the first frequency mixer, and at the moment, the whole output signal contains an intermodulation component; the microwave filter is connected to the final radio frequency output end of the second mixer to filter out intermodulation components in the high-frequency microwave signal, retain useful signals and finally realize the ultra-large delay of the microwave frequency band, and the microwave frequency band has good temperature stability and high frequency stability.
Claims (6)
1. A microwave frequency band ultra-large delay method is characterized by comprising the following steps:
(1) dividing a local oscillator signal into two paths to form two paths of coherent local oscillator signals which are respectively used for up-conversion and down-conversion of an input microwave signal;
(2) the method comprises the steps that a high-frequency microwave signal is input to be mixed with a local oscillator signal, and the mixed frequency is converted into a low-frequency microwave signal in a down-conversion mode;
(3) carrying out ultra-large time delay on the low-frequency microwave signal;
(4) mixing the low-frequency microwave signal subjected to the ultra-large delay with another local oscillator signal, and performing frequency conversion to the original high-frequency microwave signal in an up-conversion mode, wherein the whole output signal contains an intermodulation component;
(5) filtering the intermodulation component of the microwave signal containing the intermodulation component output in the step (4), and reserving a useful signal to obtain a microwave signal with ultra-large delay;
the down-conversion is that one local oscillation signal subtracts a high-frequency microwave signal or one local oscillation signal subtracts the high-frequency microwave signal; and (4) performing up-conversion to obtain another local oscillator signal, adding down-conversion, and performing ultra-large delay on the low-frequency microwave signal.
2. The microwave-band ultra-large delay method according to claim 1, wherein the microwaves are millimeter waves.
3. A microwave band ultra-large delay system for the microwave band ultra-large delay method of claim 1, the system comprising:
the frequency divider is characterized by sequentially connecting a first frequency mixer, a super-large delayer, a second frequency mixer and a filter, wherein the first frequency mixer and the second frequency mixer are connected with a high-isolation power divider;
the high-isolation power divider divides one local oscillation signal into two paths to form two paths of coherent local oscillation signals which are respectively used for up-conversion and down-conversion of input microwave signals;
the first frequency mixer is used for down-converting the input high-frequency microwave signal and one local oscillator signal to a low-frequency microwave signal;
the ultra-large delayer receives the low-frequency microwave signal of the down-conversion of the first mixer and carries out ultra-large time delay;
the second mixer up-converts the low-frequency microwave signal delayed by the ultra-large delayer and the other local oscillator signal into the original high-frequency microwave signal, and the whole output signal contains intermodulation components;
the filter is arranged at the final output end of the second mixer to filter out intermodulation components in the high-frequency microwave signal output by the second mixer, so that a useful signal is reserved, and finally, the ultra-large time delay of the microwave frequency band is realized.
4. The microwave band ultra-large delay system of claim 3, wherein the ultra-large delay is a sound meter delay or a static magnetic wave delay.
5. The microwave-band ultra-large delay system of claim 3, wherein the first mixer, the second mixer, the filter and the high-isolation power divider are chips or surface-mounted devices.
6. The microwave-band ultra-large delay system of claim 3, wherein the microwaves are millimeter waves.
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| CN201611044445.5A CN106654485B (en) | 2016-11-22 | 2016-11-22 | Microwave frequency band ultra-large delay method and system |
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| CN106654485B true CN106654485B (en) | 2020-01-24 |
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| KR20030014043A (en) * | 2001-08-10 | 2003-02-15 | 주식회사 텔레매틱스 | Apparatus for Interexchanging Multi-Path of Mobile Communication System using Delay Process |
| CN101355392A (en) * | 2007-07-26 | 2009-01-28 | 大唐移动通信设备有限公司 | Method and system for measuring time delay of user terminal receiving channel |
| JP2009094958A (en) * | 2007-10-11 | 2009-04-30 | Sony Corp | Retransmitting device and retransmission method |
| CN101465656A (en) * | 2008-09-05 | 2009-06-24 | 华为技术有限公司 | Device, method and system for frequency conversion |
| CN205374733U (en) * | 2016-01-30 | 2016-07-06 | 南京理工大学 | Phased array system based on dispersive delay line |
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2016
- 2016-11-22 CN CN201611044445.5A patent/CN106654485B/en active Active
Patent Citations (5)
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| KR20030014043A (en) * | 2001-08-10 | 2003-02-15 | 주식회사 텔레매틱스 | Apparatus for Interexchanging Multi-Path of Mobile Communication System using Delay Process |
| CN101355392A (en) * | 2007-07-26 | 2009-01-28 | 大唐移动通信设备有限公司 | Method and system for measuring time delay of user terminal receiving channel |
| JP2009094958A (en) * | 2007-10-11 | 2009-04-30 | Sony Corp | Retransmitting device and retransmission method |
| CN101465656A (en) * | 2008-09-05 | 2009-06-24 | 华为技术有限公司 | Device, method and system for frequency conversion |
| CN205374733U (en) * | 2016-01-30 | 2016-07-06 | 南京理工大学 | Phased array system based on dispersive delay line |
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