CN216390937U - WIFI6E band-pass filter, related equipment and chip - Google Patents
WIFI6E band-pass filter, related equipment and chip Download PDFInfo
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- CN216390937U CN216390937U CN202122605232.8U CN202122605232U CN216390937U CN 216390937 U CN216390937 U CN 216390937U CN 202122605232 U CN202122605232 U CN 202122605232U CN 216390937 U CN216390937 U CN 216390937U
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
Abstract
The utility model provides a WIFI6E band-pass filter which comprises an input port, an output port, a cross-over circuit, a first resonator and a second resonator, wherein the first resonator and the second resonator are connected in series; the jumper circuit comprises a first jumper module and a second jumper module; the first bridging module is bridged between the input port and the ground, the circuit structure of the second bridging module is the same as that of the first bridging module, and the second bridging module is bridged between the output port and the ground. The utility model also provides WIFI6E communication equipment and a chip. The technical scheme of the utility model can work in a 5GHz-7GHz frequency band of WIFI6E, and has the advantages of small insertion loss and simple circuit.
Description
Technical Field
The utility model relates to the technical field of radio frequency circuits, in particular to a WIFI6E band-pass filter, WIFI6E communication equipment and a chip.
Background
At present, in the development of communication technology, a new generation of WiFi6E adopts an 802.11ax protocol and operates on a WiFi signal transmitting system on a 5GHz-7GHz high frequency band, and a transmitting end filter is an important component in the WiFi signal transmitting system.
A transmitting end filter in the related technology adopts an ultra-small-sized dielectric filter, which is manufactured on the basis of selecting a high-dielectric-constant microwave ceramic material BaO-Nd2O3-TiO2 with the dielectric constant of 95, firstly, the size of a dielectric layer of the filter is designed and calculated by adopting an influence parameter method, and finally, a coupling capacitor is etched on an electroplated layer by adopting a laser photoetching process, so that the manufacturing of the filter is realized.
However, the related art filter supports only a 5GHz band, the center frequency of which is 5665 MHz. When a new generation of WiFi6E is input at signals above the higher frequency (6GHz), poor filtering characteristics result. Therefore, the prior art cannot adapt to a WIFI signal with a higher frequency, is large in size, 3.8mm multiplied by 2.0mm multiplied by 3.0mm, and is difficult to integrate into an integrated circuit chip.
Therefore, it is necessary to provide a new WIFI6E band pass filter, related device and chip to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the WIFI6E band-pass filter, the WIFI6E communication equipment and the chip which can work in a 5GHz-7GHz frequency band of WIFI6E, have small insertion loss and are simple in circuit.
In order to solve the technical problem, the utility model provides a WIFI6E band-pass filter, which comprises an input port and an output port, wherein the input port is used for receiving an external input signal, and the output port is used for outputting a filtered signal;
the WIFI6E band-pass filter further comprises a cross-over circuit, a first resonator and a second resonator which are arranged between the input port and the output port and connected in series;
the first resonator includes a first inductor and a first capacitor connected in series;
the second resonator comprises a second inductor and a second capacitor connected in series;
the jumper circuit comprises a first jumper module and a second jumper module;
the first cross-connection module is in cross connection between the input port and the ground and is used for suppressing and attenuating out-of-band signals in the signals of the input port and reducing signal attenuation in an operating frequency band; the first bridging module comprises a third resonator and a first resonator unit which are connected in series;
the third resonator comprises a third inductor and a third capacitor connected in parallel;
the first resonator unit comprises a fourth resonator and a second resonator unit which are connected in parallel;
the fourth resonator comprises a fourth inductor and a fourth capacitor connected in series;
the second resonator unit includes a first resistor and a fifth resonator connected in series;
the fifth resonator unit includes a fifth inductor and a fifth capacitor connected in parallel;
the second crossover module is bridged between the output port and the ground, and is used for suppressing and attenuating out-of-band signals in the signals at the output port and reducing signal attenuation in an operating frequency band, and the circuit structure of the second crossover module is the same as that of the first crossover module.
Preferably, the second cross-over module comprises a sixth resonator and a third resonator unit connected in series; the sixth resonator comprises a sixth inductor and a sixth capacitor connected in parallel; the third resonator unit comprises a seventh resonator and a fourth resonator unit which are connected in parallel; the seventh resonator includes a seventh inductor and a seventh capacitor connected in series; the fourth resonator unit includes a second resistor and an eighth resonator connected in series; the eighth resonator includes an eighth inductor and an eighth capacitor connected in parallel.
Preferably, the insertion loss of the operating bandwidth of the WIFI6E band-pass filter in the frequency range of 5.1GHz-7.1GHz is less than 1.5 dB.
Preferably, the WIFI6E band-pass filter is manufactured by a gallium arsenide process.
Preferably, the layout area of the WIFI6E band-pass filter is 0.7mm multiplied by 0.6mm multiplied by 0.09 mm.
The utility model also provides WIFI6E communication equipment which comprises the power amplifier transmitting module.
The utility model also provides a chip comprising the power amplifier transmitting module.
Compared with the related art, the WIFI6E band-pass filter, the WIFI6E communication equipment and the chip have the advantages that the first resonator and the second resonator which are connected in series are arranged on the WIFI6E band-pass filter, two-stage LC series resonance is formed by the first resonator and the second resonator, the insertion loss of signals in a working frequency band at the connecting point of the output end of the external power amplifier and the input end of the external duplexer is reduced, and the insertion loss of signals in the working frequency band at the connecting point of the output end and the input end of the external duplexer is reduced. The jumper circuit comprises a first jumper module and a second jumper module; the first cross-connection module is in cross connection between the input port and the ground and is used for suppressing and attenuating out-of-band signals in the signals of the input port and reducing signal attenuation in an operating frequency band; the second bridging module is bridged between the output port and the ground and is used for suppressing and attenuating out-of-band signals in the signals of the output port and reducing signal attenuation in an operating frequency band; the circuit structure of the second jumper module is the same as that of the first jumper module; the circuit structure enables the WIFI6E band-pass filter to work in a 5GHz-7GHz frequency band of WIFI6E, insertion loss is small, and the circuit is simple.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings. The foregoing and other aspects of the utility model will become more apparent and more readily appreciated from the following detailed description, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a circuit structure diagram of a WIFI6E band pass filter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an insertion loss curve of a WIFI6E band-pass filter according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
The embodiments/examples described herein are specific embodiments of the present invention, are intended to be illustrative of the concepts of the present invention, are intended to be illustrative and exemplary, and should not be construed as limiting the embodiments and scope of the utility model. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include those which make any obvious replacement or modification of the embodiments described herein, and all of which are within the scope of the present invention.
Referring to fig. 1, fig. 1 is a circuit structure diagram of a WIFI6E band pass filter according to the present invention.
The utility model provides a WIFI6E band-pass filter 100. The WIFI6E band pass filter 100 includes an input port IN, an output port OUT, a first resonator 1, a second resonator 2, and a cross-over circuit 3
The input port IN is used for receiving an external input signal. IN this embodiment, the input port IN is connected to an output terminal of an external power amplifier. When a circuit of a power amplifier amplifies a signal in amplitude and power, not only a useful signal but also an unnecessary signal having a frequency twice or three times that of the useful signal is generated. These signals are input to the input port IN, and are filtered by the WIFI6E band pass filter 100.
The output port OUT is used for outputting the filtered signal. In this embodiment, the output port OUT is connected to an input terminal of an external duplexer. After the WIFI6E band-pass filter 100 performs filtering processing, the filtered signal passes through the output port OUT and is output to the input end of the duplexer.
The first resonator 1 and the second resonator 2 are connected in series.
The first resonator 1 and the second resonator 2 are disposed between the input port IN and the output port OUT.
The jumper circuit 3 comprises a first jumper module 31 and a second jumper module 32.
The first cross-connection module 31 is configured to suppress and attenuate out-of-band signals in the signals at the input port, and reduce signal attenuation in the operating frequency band. The first bridging module 31 is bridged between the input port IN and the ground GND.
The second bridge module 32 is configured to suppress and attenuate out-of-band signals in the signals at the output ports, and reduce signal attenuation in the operating frequency band. The second bridge module 32 is connected across the output port OUT and the ground GND. The circuit configuration of the second jumper module 32 is the same as that of the first jumper module 31.
The specific circuit structure of the WIFI6E band pass filter 100 is:
the first resonator 1 includes a first inductor L1 and a first capacitor C1 connected in series.
The second resonator 2 includes a second inductor L2 and a second capacitor C2 connected in series.
The first cross module 31 includes a third resonator 311 and a first resonator unit 312 connected in series.
The third resonator 311 includes a third inductor L3 and a third capacitor C3 connected in parallel.
The first resonator unit 312 includes a fourth resonator 3121 and a second resonator unit 3122 connected in parallel.
The fourth resonator 3121 includes a fourth inductor L4 and a fourth capacitor C4 connected in series.
The second resonator unit 3122 includes a first resistor R1 and a fifth resonator 31221 connected in series.
The fifth resonator 31221 includes a fifth inductor L5 and a fifth capacitor C5 connected in parallel.
The second cross-over module 32 comprises a sixth resonator and a third resonator unit connected in series.
The sixth resonator includes a sixth inductor L6 and a sixth capacitor C6 connected in parallel.
The third resonator unit includes a seventh resonator and a fourth resonator unit connected in parallel.
The seventh resonator includes a seventh inductor L7 and a seventh capacitor C7 connected in series.
The fourth resonator element comprises a second resistor R2 and an eighth resonator connected in series.
The eighth resonator includes an eighth inductor L8 and an eighth capacitor C8 connected in parallel.
The specific circuit working principle of the WIFI6E band-pass filter 100 is as follows:
the first resonator 1 and the second resonator 2 are connected in series to form a two-stage LC series resonance, so that the insertion loss of a signal in an operating frequency band at a connection point between an output end of an external power amplifier and an input port is reduced, and the insertion loss of a signal in an operating frequency band at a connection point between the output port and an input end of an external duplexer is reduced. This structure makes the insertion loss of the WIFI6E band pass filter 100 small.
In the jumper circuit 3, the first jumper module 31 is taken as an example for explanation:
the third inductor L3 and the third capacitor C3 of the third resonator 311 form an LC parallel resonant tank. The LC parallel resonant tank allows out-of-band signals to be suppressed and attenuated.
The fourth inductor L4 and the fourth capacitor C4 of the fourth resonator 3121 form a trap circuit. The trap circuit provides more severe attenuation of out-of-band signals.
The first resistor R1 of the second resonator element 3122 provides a certain impedance, and the first resistor R1 allows frequencies above the operating bandwidth to be better attenuated.
The fifth inductor L5 and the fifth capacitor C5 of the fifth resonator 31221 form a parallel resonant tank while being connected to the ground. The parallel resonant tank can reduce signal attenuation in the operating frequency band.
It should be noted that the circuit structure of the second cross-over module 32 is symmetrical to the circuit structure of the first cross-over module 31, and functions in the same manner.
Therefore, the specific circuit of the WIFI6E band pass filter 100 can obtain:
the insertion loss of the working bandwidth of the WIFI6E band-pass filter 100 in the frequency range of 5.1GHz-7.1GHz is less than 1.5 dB.
In order to verify the insertion loss condition of the WIFI6E band-pass filter 100, a circuit of the WIFI6E band-pass filter 100 is simulated, and fig. 2 is referred to as a simulation result, where fig. 2 is a schematic diagram of an insertion loss curve of the WIFI6E band-pass filter according to the embodiment of the present invention.
Wherein the Db (S (1,1)) value of the WIFI6E band-pass filter 100 at the frequency m3 point with the working bandwidth of 5.1GHz is-40.212.
The Db (S (1,1)) value of the WIFI6E band pass filter 100 at the frequency m4 point with the operating bandwidth of 7.1GHz is-18.207.
The Db (S (2,1)) value of the WIFI6E band pass filter 100 at the frequency m3 point with the operating bandwidth of 5.1GHz is-1.313.
The Db (S (2,1)) value of the WIFI6E band pass filter 100 at the frequency m4 point with the operating bandwidth of 7.1GHz is-1.290.
From the values on the graph, it can be derived: the insertion loss of the WIFI6E band pass filter 100 is less than 1.5 dB. Therefore, the WIFI6E band-pass filter can work in a 5GHz-7GHz frequency band of WIFI6E and has small insertion loss.
In this embodiment, the WIFI6E band pass filter 100 is made by a gallium arsenide process.
Because the circuit of the WIFI6E band pass filter 100 is simple and the number of used devices is small, in this embodiment, the layout area of the WIFI6E band pass filter 100 is 0.7mm × 0.6mm × 0.09 mm. Therefore, the WIFI6E band pass filter 100 can be conveniently integrated on the same chip of the rf amplifier.
It should be noted that the resistor, the capacitor and the inductor adopted in the present invention are all common components in the field, and the index and the parameter are adjusted according to the actual application, and are not described in detail herein.
The utility model also provides WIFI6E communication equipment which comprises the power amplifier transmitting module.
The utility model also provides a chip comprising the power amplifier transmitting module.
Compared with the related art, the WIFI6E band-pass filter, the WIFI6E communication equipment and the chip have the advantages that the first resonator and the second resonator which are connected in series are arranged on the WIFI6E band-pass filter, two-stage LC series resonance is formed by the first resonator and the second resonator, the insertion loss of signals in a working frequency band at the connecting point of the output end of the external power amplifier and the input end of the external duplexer is reduced, and the insertion loss of signals in the working frequency band at the connecting point of the output end and the input end of the external duplexer is reduced. The jumper circuit comprises a first jumper module and a second jumper module; the first cross-connection module is in cross connection between the input port and the ground and is used for suppressing and attenuating out-of-band signals in the signals of the input port and reducing signal attenuation in an operating frequency band; the second bridging module is bridged between the output port and the ground and is used for suppressing and attenuating out-of-band signals in the signals of the output port and reducing signal attenuation in an operating frequency band; the circuit structure of the second jumper module is the same as that of the first jumper module; the circuit structure enables the WIFI6E band-pass filter to work in a 5GHz-7GHz frequency band of WIFI6E, insertion loss is small, and the circuit is simple.
It should be noted that the above-mentioned embodiments described with reference to the drawings are only intended to illustrate the present invention and not to limit the scope of the present invention, and it should be understood by those skilled in the art that modifications and equivalent substitutions can be made without departing from the spirit and scope of the present invention. Furthermore, unless the context indicates otherwise, words that appear in the singular include the plural and vice versa. Additionally, all or a portion of any embodiment may be utilized with all or a portion of any other embodiment, unless stated otherwise.
Claims (7)
1. A WIFI6E band-pass filter comprises an input port and an output port, wherein the input port is used for receiving an external input signal, and the output port is used for outputting a filtered signal; it is characterized in that the preparation method is characterized in that,
the WIFI6E band-pass filter further comprises a cross-over circuit, a first resonator and a second resonator which are arranged between the input port and the output port and connected in series;
the first resonator includes a first inductor and a first capacitor connected in series;
the second resonator comprises a second inductor and a second capacitor connected in series;
the jumper circuit comprises a first jumper module and a second jumper module;
the first cross-connection module is in cross connection between the input port and the ground and is used for suppressing and attenuating out-of-band signals in the signals of the input port and reducing signal attenuation in an operating frequency band; the first bridging module comprises a third resonator and a first resonator unit which are connected in series;
the third resonator comprises a third inductor and a third capacitor connected in parallel;
the first resonator unit comprises a fourth resonator and a second resonator unit which are connected in parallel;
the fourth resonator comprises a fourth inductor and a fourth capacitor connected in series;
the second resonator unit includes a first resistor and a fifth resonator connected in series;
the fifth resonator unit includes a fifth inductor and a fifth capacitor connected in parallel;
the second crossover module is bridged between the output port and the ground, and is used for suppressing and attenuating out-of-band signals in the signals at the output port and reducing signal attenuation in an operating frequency band, and the circuit structure of the second crossover module is the same as that of the first crossover module.
2. The WIFI6E bandpass filter of claim 1, wherein the second crossover module includes a sixth resonator and a third resonator unit in series; the sixth resonator comprises a sixth inductor and a sixth capacitor connected in parallel; the third resonator unit comprises a seventh resonator and a fourth resonator unit which are connected in parallel; the seventh resonator includes a seventh inductor and a seventh capacitor connected in series; the fourth resonator unit includes a second resistor and an eighth resonator connected in series; the eighth resonator includes an eighth inductor and an eighth capacitor connected in parallel.
3. The WIFI6E band pass filter of claim 1, wherein the WIFI6E band pass filter has an insertion loss of less than 1.5dB over a frequency range of 5.1GHz-7.1GHz in an operating bandwidth.
4. The WIFI6E band-pass filter of claim 1, wherein the WIFI6E band-pass filter is made by a gallium arsenide process.
5. The WIFI6E band-pass filter of claim 1, wherein the layout area of the WIFI6E band-pass filter is 0.7mm x 0.6mm x 0.09 mm.
6. A WIFI6E communication device, characterized in that the WIFI6E communication device comprises a WIFI6E band pass filter according to any one of claims 1-5.
7. A chip characterized in that it comprises a WIFI6E band pass filter according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122605232.8U CN216390937U (en) | 2021-10-27 | 2021-10-27 | WIFI6E band-pass filter, related equipment and chip |
| PCT/CN2022/116499 WO2023071517A1 (en) | 2021-10-27 | 2022-09-01 | Wifi 6e band-pass filter, related device and chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122605232.8U CN216390937U (en) | 2021-10-27 | 2021-10-27 | WIFI6E band-pass filter, related equipment and chip |
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| CN216390937U true CN216390937U (en) | 2022-04-26 |
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| CN202122605232.8U Active CN216390937U (en) | 2021-10-27 | 2021-10-27 | WIFI6E band-pass filter, related equipment and chip |
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| WO (1) | WO2023071517A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071517A1 (en) * | 2021-10-27 | 2023-05-04 | 深圳飞骧科技股份有限公司 | Wifi 6e band-pass filter, related device and chip |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011250160A (en) * | 2010-05-27 | 2011-12-08 | Japan Radio Co Ltd | Band-pass filter circuit and mmic |
| JP7149819B2 (en) * | 2018-11-21 | 2022-10-07 | 三菱電機特機システム株式会社 | band pass filter |
| CN212278205U (en) * | 2020-06-09 | 2021-01-01 | 云南雷迅科技有限公司 | Novel band-pass filter |
| CN113411062B (en) * | 2021-08-19 | 2022-03-29 | 深圳飞骧科技股份有限公司 | Matching circuit, radio frequency front end power amplifying circuit and mobile communication equipment |
| CN216390937U (en) * | 2021-10-27 | 2022-04-26 | 深圳飞骧科技股份有限公司 | WIFI6E band-pass filter, related equipment and chip |
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2021
- 2021-10-27 CN CN202122605232.8U patent/CN216390937U/en active Active
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2022
- 2022-09-01 WO PCT/CN2022/116499 patent/WO2023071517A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071517A1 (en) * | 2021-10-27 | 2023-05-04 | 深圳飞骧科技股份有限公司 | Wifi 6e band-pass filter, related device and chip |
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| WO2023071517A1 (en) | 2023-05-04 |
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