CN110034393A - Dual-band antenna - Google Patents
Dual-band antenna Download PDFInfo
- Publication number
- CN110034393A CN110034393A CN201810030664.0A CN201810030664A CN110034393A CN 110034393 A CN110034393 A CN 110034393A CN 201810030664 A CN201810030664 A CN 201810030664A CN 110034393 A CN110034393 A CN 110034393A
- Authority
- CN
- China
- Prior art keywords
- dual
- conducting path
- band antenna
- inductor
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The present invention relates to a kind of dual-band antennas comprising: one first conducting path, one second conducting path and a filter.One first end of the first conducting path is connected to an antenna feed inbound port.One first end of the filter is connected to a second end of first conducting path.And a first end of second conducting path is connected to a second end of the filter.Dual-band antenna of the invention can operate with 2.4G frequency range and 5G frequency range in WiFi dual-frequency system.
Description
Technical field
The present invention relates to a kind of antennas, and in particular to a kind of dual-band antenna.
Background technique
Fig. 1 is please referred to, it is depicted for traditional dual-band antenna.The dual-band antenna is made in double-layer printing circuit board
On (PCB, Printed Circuit Board).Wherein, dual-band antenna is designed in the surface layer (Top of printed circuit board
Layer on), and metal ground plane (Metal ground surface) 130 is designed to the bottom (Bottom of printed circuit board
Layer on).Furthermore the radiation assembly (Radiation element) of dual-band antenna is designed in antenna headroom region
(Antenna Clearance)110。
As shown in Figure 1, A point (node A) is the antenna feed inbound port (Antenna of the radiation assembly in dual-band antenna
Feed Port), it is high-frequency resonance path by conducting path (conducting path) P1 that antenna feed inbound port A extends
(resonant path) is low-frequency resonance path by the conducting path P2 that antenna feed inbound port A extends.Substantially, radiation assembly
Two operating frequencies (operating frequency) can be determined by the length for adjusting two conducting paths P1, P2.Its
In, two conducting paths P1, P2 are conducting wire (conducting line).
For example, the wavelength of high operating frequency (higher operating frequency) is λ1, low operating frequency
The wavelength of (lower operating frequency) is λ2, then the length of conducting path P1 is (1/4) λ1, conducting path P2
Length be (1/4) λ2。
Referring to figure 2., depicted for traditional co-plane waveguide formula (coplanar waveguide, abbreviation CPW) double frequency
Antenna.The CPW dual-band antenna is made on single-layer printed circuit plate.Wherein, the radiation assembly of dual-band antenna is designed in day
Line empty regions 210, and metal ground plane 230a, 230b is designed on printed circuit board, two sides of dual-band antenna.
As shown in Fig. 2, B point is the antenna feed inbound port of the radiation assembly, by antenna feed inbound port B institute in dual-band antenna
The conducting path P3 of extension is high-frequency resonance path, is low-frequency resonance road by the conducting path P4 that antenna feed inbound port B is extended
Diameter.Similarly, when the wavelength of high operating frequency is λ3And the wavelength of low operating frequency is λ4When, then the length of conducting path P3 is
(1/4)λ3, the length of conducting path P4 is (1/4) λ4。
Referring to figure 3., depicted for another dual-band antenna of tradition.The dual-band antenna is exposed in U.S. Patent number
US6801168.The dual-band antenna is made on double-layer printing circuit board.Wherein, the first width of dual-band antenna is penetrated component and is set
Meter is designed to the bottom of printed circuit board with metal ground plane 330 in the surface layer of printed circuit board, the second radiation assembly.Its
In, the first radiation assembly of dual-band antenna is designed in the antenna headroom region on printed circuit board surface layer, the second radiation assembly quilt
Design is in the antenna headroom region of printed circuit board bottom.
As shown in figure 3, C point is the antenna feed inbound port of dual-band antenna in dual-band antenna, prolonged by antenna feed inbound port C
The conducting path P5 stretched is low-frequency resonance path.Furthermore the second radiation assembly is contacted with metal ground plane 330, by metallic ground
The conducting path P6 that face 330 is extended is high-frequency resonance path.
Referring to figure 4., depicted for another dual-band antenna of tradition.The dual-band antenna is exposed in U.S. Patent Publication No.
US20040108957.The dual-band antenna is made on double-layer printing circuit board.Wherein, the first width of dual-band antenna penetrates component
412 and second radiation assembly 414 be designed in the surface layer of printed circuit board, and the first radiation assembly 412 of dual-band antenna and
Two radiation assemblies 414 are designed in the antenna headroom region on printed circuit board surface layer.
As shown in figure 4, D point is the antenna feed inbound port of dual-band antenna in dual-band antenna, prolonged by antenna feed inbound port D
The conducting path P7 stretched is high-frequency resonance path.Furthermore the conducting path P8 of the second radiation assembly 414 is low-frequency resonance path.
Summary of the invention
The present invention provides a kind of dual-band antenna comprising: one first conducting path, a first end of first conducting path
It is connected to an antenna feed inbound port, and the length of first conducting path determines one first operating frequency of the dual-band antenna；One
One first end of filter, the filter is connected to a second end of first conducting path；And one second conducting path, it should
One first end of the second conducting path is connected to a second end of the filter, and wherein first conducting path is plus second biography
Guiding path determines one second operating frequency of the dual-band antenna；Wherein, which prevents the frequency range of first operating frequency, and
Pass through the frequency range of second operating frequency.
Detailed description of the invention
In order to have preferable understanding, special embodiment below to above-mentioned and other aspect of the invention, and cooperate attached drawing detailed
Carefully it is described as follows:
Fig. 1 is traditional dual-band antenna.
Fig. 2 is traditional co-plane waveguide formula dual-band antenna.
Fig. 3 is another dual-band antenna of tradition.
Fig. 4 is another dual-band antenna of tradition.
Fig. 5 is dual-band antenna of the present invention.
Fig. 6 A to Fig. 6 D is the 4th example of filter of the present invention.
Fig. 6 E is the S21 coefficient figure of the 4th example filter.
Fig. 7 is the S11 coefficient figure of the dual-band antenna of the 4th example filter 530 of collocation.
Description of symbols:
110,210,510: antenna headroom region
130,230a, 230b, 330,430,530: metal ground plane
414,412: radiation assembly
Specific embodiment
Referring to figure 5., depicted is dual-band antenna of the present invention.The dual-band antenna is made on double-layer printing circuit board.
Wherein, dual-band antenna design is on the surface layer of printed circuit board, and metal ground plane 530 is designed at the bottom of printed circuit board
On.Furthermore the radiation assembly system of dual-band antenna designs in antenna headroom region 510.
According to an embodiment of the invention, radiation assembly include one first conducting path Pa, a filter (filter) 530 with
One second conducting path Pb.Wherein, filter 530 is connected between the first conducting path Pa and the second conducting path Pb.
As shown in figure 5, in dual-band antenna, E point is the antenna feed inbound port of the radiation assembly, the of the first conducting path Pa
One end is connected to antenna feed inbound port E, and the second end of the first conducting path Pa is connected to filter 530, furthermore, the second conducting pathway
The first end of diameter Pb is connected to filter 530.
According to an embodiment of the invention, being high-frequency resonance road by the first conducting path Pa that antenna feed inbound port E is extended
Diameter, and the first conducting path Pa extended by antenna feed inbound port E is low-frequency resonance path plus the second conducting path Pb.
Furthermore two operating frequencies of radiation assembly can be determined by the length of the first conducting path Pa and the second conducting path Pb.
For example, when the wavelength of high operating frequency is λaAnd the wavelength of low operating frequency is λbWhen, then high-frequency resonance path
Length be (1/4) λa, the length in low-frequency resonance path is (1/4) λb.That is, the length of the first conducting path P1
For (1/4) λa, and the first conducting path Pa is (1/4) λ plus the length of the second conducting path Pbb。
Furthermore filter 530 of the invention has through low operating frequency and prevents the characteristic of high operating frequency.With
For 2.4G operating frequency and 5G operating frequency in WiFi dual-frequency system (dual-band WiFi system), filter
530 have through 2.4G frequency range and prevent the characteristic (2G band pass and 5G band rejection) of 5G frequency range.
Fig. 6 A is please referred to, depicted is first example of filter of the present invention.Filter 530 is by an inductor L group
At.One end of inductor L is connected to the second end of the first conducting path Pa, and the other end of inductor L is connected to the second conducting pathway
The first end of diameter Pb.Wherein, the inductance value of inductor L is about between 4nH and 10nH.
For example, the inductance value of inductor L is 6.8nH, the parasitic capacitance value (parasitic with 0.2pF
capacitance).Therefore, the natural frequency of vibration (Inductor self-resonance) of inductor L is about 4GHz~6GHz's
Between frequency range, that is, band resistance frequency (band stop frequency) of filter 530 is about between 4GHz~6GHz.
For example, it when the inductance value of inductor L is 6.8nH, can be observed, be arranged in pairs or groups by S11 coefficient figure (S11plot)
The dual-band antenna of first exemplary filter 530, then it is with dual frequency resonant (Dual-frequency resonance)
Characteristic.However, the bandwidth that 5G frequency range is prevented from is too narrow, and the antenna efficiency (Antenna Efficiency) of 2.4G frequency range is bad
About there was only 40%.
Fig. 6 B is please referred to, depicted is second example of filter of the present invention.Filter 530 by two inductor L1 with
L2 is composed in parallel.One end of inductor L1 and L2 are connected to the second end of the first conducting path Pa, and inductor L1's and L2 is another
End is connected to the first end of the second conducting path Pb.Wherein, the inductance value of inductor L is about between 4nH and 10nH.
For example, it when the inductance value of two inductors L1 and L2 are 6.8nH, can be seen by S11 coefficient figure (S11plot)
It measures, the dual-band antenna for second exemplary filter 530 of arranging in pairs or groups, then its characteristic with dual frequency resonant, and 2.4G frequency range
Antenna efficiency has made moderate progress.However, bandwidth that 5G frequency range is prevented from or too narrow.
Fig. 6 C is please referred to, depicted is the third example of filter of the present invention.Filter 530 is by inductor L and electricity
Resistance R is composed in parallel.One end of inductor L and resistance R is connected to the second end of the first conducting path Pa, inductor L and resistance R's
The other end is connected to the first end of the second conducting path Pb.Wherein, the inductance value of inductor L is about between 4nH and 10nH, resistance
The resistance value of R is about between 400 ohm and 2000 ohm.
For example, the inductance value of inductor L is 6.8nH and when the resistance value of resistor R is 650 ohm, by S11 coefficient
Figure (S11plot) can observe that the dual-band antenna of the exemplary filter 530 of collocation third, then it is with dual frequency resonant
Characteristic, and the bandwidth that 5G frequency range is prevented from has broadened.However, the antenna efficiency of 2.4G frequency range is bad about to only have 40%.
Fig. 6 D is please referred to, depicted is the 4th example of filter of the present invention.Filter 530 is by inductor L, capacitor
Device C is composed in parallel with resistance R.One end of inductor L is connected to the second end of the first conducting path Pa, the other end of inductor L
It is connected to one end of capacitor C, the other end of capacitor C is connected to the first end of the second conducting path Pb.Furthermore resistance R's
One end is connected to the second end of the first conducting path Pa, and the other end of resistance R is connected to the first end of the second conducting path Pb.Its
In, the inductance value of inductor L is about between 4nH and 10nH, and the resistance value of resistance R is about between 400 ohm and 2000 ohm, electricity
The capacitance of container C is about between 0.1pF and 2pF.
For example, the inductance value of inductor L is 6.2nH and the resistance value of resistance R is the electricity of 560 ohm and capacitor C
It when capacitance is 0.5F, can be observed by S11 coefficient figure (S11plot), the double frequency day for the 4th exemplary filter 530 of arranging in pairs or groups
Line, then its characteristic with dual frequency resonant, the bandwidth that 5G frequency range is prevented from has broadened (widen), and the antenna of 2.4G frequency range
Efficiency is improved to 80%, and the antenna efficiency of 5G frequency range is about 55%.
Fig. 6 E is please referred to, depicted is the S21 coefficient figure (S21plot) of the 4th example filter.It is apparent that filter
530 in the S21 coefficient of the frequency range of 2.4GHz be about 0.2dB, that is, filter 530 has the characteristic by 2.4G frequency range.Furthermore
Filter 530 is about -15dB in the S21 coefficient of the frequency range of 5GHz, that is, filter 530 has the characteristic for preventing 5G frequency range.
Fig. 7 is please referred to, the S11 coefficient figure of the depicted dual-band antenna for the 4th example filter 530 of collocation
(S11plot).Wherein, the S11 coefficient in frequency 2.412GHz is -14.884dB, the S11 coefficient in frequency 2.472GHz
For -14.506dB, the S11 coefficient in frequency 5.10GHz is -15.628dB, the S11 coefficient in frequency 5.90GHz is -
10.230dB。
Therefore, dual-band antenna of the invention can operate with WiFi dual-frequency system (dual-band WiFi system) really
In 2.4G frequency range and 5G frequency range.
Furthermore system of the present invention is with the dual-band antenna for applying to WiFi dual-frequency system (dual-band WiFi system)
Example illustrates.But the present invention is not limited to this, can also be set in those skilled in the art with content according to the present invention
Dual-band antenna is counted, and applies to other dual-frequency systems.
In conclusion although the present invention has been disclosed by way of example above, it is not intended to limit the present invention..Institute of the present invention
Belong to those of ordinary skill in technical field, without departing from the spirit and scope of the present invention, cocoa makees various change and retouching.
Therefore, protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. a kind of dual-band antenna, comprising:
One first conducting path, a first end of first conducting path are connected to an antenna feed inbound port, and first conduction
The length in path determines one first operating frequency of the dual-band antenna；
One first end of one filter, the filter is connected to a second end of first conducting path；And
One first end of one second conducting path, second conducting path is connected to a second end of the filter, wherein this
One conducting path determines one second operating frequency of the dual-band antenna plus second conducting path；
Wherein, which prevents the frequency range of first operating frequency, and passes through the frequency range of second operating frequency.
2. dual-band antenna as described in claim 1, wherein the filter includes: one first inductor, first inductor
One first end is connected to the second end of first conducting path, and a second end of first inductor is connected to second conduction
The first end in path.
3. dual-band antenna as claimed in claim 2, wherein the filter further include: one second inductor, second inductor
A first end be connected to the second end of first conducting path, a second end of second inductor is connected to this and second passes
The first end of guiding path.
4. dual-band antenna as claimed in claim 3, wherein the inductance value of first inductor and second inductor between
Between 4nH and 10nH.
5. dual-band antenna as claimed in claim 2, wherein the filter further include: a first end of a resistance, the resistance connects
It is connected to the second end of first conducting path, a second end of the resistance is connected to the first end of second conducting path.
6. dual-band antenna as claimed in claim 5, wherein the inductance value of first inductor, should between 4nH and 10nH
The resistance value of resistor is between 400 ohm and 2000 ohm.
7. dual-band antenna as described in claim 1, wherein the filter includes:
One inductor；
One capacitor, wherein the inductor and the capacitor series, and the inductor concatenated and the capacitor be connected to this
Between the second end of one conducting path and the first end of second conducting path；And
One resistance, a first end of the resistance are connected to the second end of first conducting path, and a second end of the resistance connects
It is connected to the first end of second conducting path.
8. dual-band antenna as claimed in claim 7, wherein the inductance value of the inductor is between 4nH and 10nH, the resistance
The resistance value of device is between 400 ohm and 2000 ohm, and the capacitance of the capacitor is between 0.1pF and 2pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030664.0A CN110034393A (en) | 2018-01-12 | 2018-01-12 | Dual-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030664.0A CN110034393A (en) | 2018-01-12 | 2018-01-12 | Dual-band antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110034393A true CN110034393A (en) | 2019-07-19 |
Family
ID=67234754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810030664.0A Pending CN110034393A (en) | 2018-01-12 | 2018-01-12 | Dual-band antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110034393A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106452A (en) * | 2019-12-13 | 2020-05-05 | 惠州Tcl移动通信有限公司 | Antenna array, FPC and electronic equipment |
| WO2021056820A1 (en) * | 2019-09-29 | 2021-04-01 | 歌尔股份有限公司 | Antenna and wearable electronic product |
| US12149002B2 (en) | 2019-12-13 | 2024-11-19 | Huizhou Tcl Mobile Communication Co., Ltd. | Antenna array, FPC and electronic device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4114817A1 (en) * | 1991-01-31 | 1992-11-12 | Kolbe & Co Hans | Multi-waveband radio aerial for motor vehicle - combines centre-loaded low-band receive-only antenna with separate high-band receive-transmit stub aerial |
| US6411260B1 (en) * | 1994-08-18 | 2002-06-25 | Alliedsignal Inc. | Triple frequency, split monopole, emergency locator transmitter antenna |
| CN1464589A (en) * | 2002-06-11 | 2003-12-31 | 瑞昱半导体股份有限公司 | Monopolar printing antenna having two free end regulation unit |
| US7289080B1 (en) * | 2006-06-28 | 2007-10-30 | Bae Systems Information And Electronic Systems Integration Inc. | Ultra broadband linear antenna |
| CN102904024A (en) * | 2012-10-24 | 2013-01-30 | 武汉大学 | Double-frequency transmitting monopole antenna for portable high-frequency ground wave radar |
| CN107534207A (en) * | 2015-11-02 | 2018-01-02 | 三星电子株式会社 | Antenna structure and the electronic installation for including the antenna structure |
-
2018
- 2018-01-12 CN CN201810030664.0A patent/CN110034393A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4114817A1 (en) * | 1991-01-31 | 1992-11-12 | Kolbe & Co Hans | Multi-waveband radio aerial for motor vehicle - combines centre-loaded low-band receive-only antenna with separate high-band receive-transmit stub aerial |
| US6411260B1 (en) * | 1994-08-18 | 2002-06-25 | Alliedsignal Inc. | Triple frequency, split monopole, emergency locator transmitter antenna |
| CN1464589A (en) * | 2002-06-11 | 2003-12-31 | 瑞昱半导体股份有限公司 | Monopolar printing antenna having two free end regulation unit |
| US7289080B1 (en) * | 2006-06-28 | 2007-10-30 | Bae Systems Information And Electronic Systems Integration Inc. | Ultra broadband linear antenna |
| CN102904024A (en) * | 2012-10-24 | 2013-01-30 | 武汉大学 | Double-frequency transmitting monopole antenna for portable high-frequency ground wave radar |
| CN107534207A (en) * | 2015-11-02 | 2018-01-02 | 三星电子株式会社 | Antenna structure and the electronic installation for including the antenna structure |
Non-Patent Citations (1)
| Title |
|---|
| 刘青爽: "《异向介质特性及其在微波器件中的应用》", 30 November 2017 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021056820A1 (en) * | 2019-09-29 | 2021-04-01 | 歌尔股份有限公司 | Antenna and wearable electronic product |
| CN111106452A (en) * | 2019-12-13 | 2020-05-05 | 惠州Tcl移动通信有限公司 | Antenna array, FPC and electronic equipment |
| US12149002B2 (en) | 2019-12-13 | 2024-11-19 | Huizhou Tcl Mobile Communication Co., Ltd. | Antenna array, FPC and electronic device |
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Application publication date: 20190719 |