CN213243994U - Combiner - Google Patents
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- CN213243994U CN213243994U CN202022383690.7U CN202022383690U CN213243994U CN 213243994 U CN213243994 U CN 213243994U CN 202022383690 U CN202022383690 U CN 202022383690U CN 213243994 U CN213243994 U CN 213243994U
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Abstract
The application discloses a combiner, which comprises a first combiner, a transmitting link and a receiving link; the first combiner is connected with an antenna, and the transmitting link and the receiving link are both connected with the first combiner; the transmitting link and the receiving link are both provided with an impedance matching circuit and a radio frequency amplifier; the transmitting link is used for transmitting L-band signals and is provided with an attenuator; the receiving chain comprises a first radio frequency chain used for receiving S frequency band signals, a second radio frequency chain used for receiving B1 frequency band signals and a third radio frequency chain used for receiving B3 frequency band signals. The combiner can be compatible with four frequency bands, has adjustable transmission gain and low insertion loss, and can be adapted to various Beidou antennas.
Description
Technical Field
The application relates to the technical field of radio frequency, in particular to a combiner.
Background
The Beidou positioning module is provided with four frequency bands of B1, B3, S and L. Wherein, B1, B3 and S are receiving frequency bands, and L is a transmitting frequency band. Generally, a single-line antenna has four frequency points for transceiving, i.e., can receive signals of B1, B3 and S frequency bands and can transmit signals of L frequency band, and in order to match various single-line antennas, a combiner compatible with four frequency bands is required. In addition, the transmission gain of the combiner is adjustable, and the insertion loss in an acceptable range is also a focus of attention. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a combiner that is compatible with four frequency bands, has adjustable transmission gain, and has low insertion loss.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to provide a combiner, can be compatible four frequency channels to transmission gain is adjustable, and insertion loss is low.
In order to solve the above technical problem, the present application provides a combiner, including:
the device comprises a first combiner, a transmitting link and a receiving link; the first combiner is connected with an antenna, and the transmitting link and the receiving link are both connected with the first combiner; the transmitting link and the receiving link are both provided with an impedance matching circuit and a radio frequency amplifier; the transmitting link is used for transmitting L-band signals and is provided with an attenuator; the receiving chain comprises a first radio frequency chain used for receiving S frequency band signals, a second radio frequency chain used for receiving B1 frequency band signals and a third radio frequency chain used for receiving B3 frequency band signals.
Optionally, the transmission link further includes:
a first band pass filter, a second band pass filter and a first low noise amplifier;
the first band-pass filter is connected with the radio-frequency amplifier, the attenuator and the first low-noise amplifier of the transmitting link, the first low-noise amplifier is further connected with the second band-pass filter, and the second band-pass filter is further connected with a radio-frequency processor.
Optionally, the first band-pass filter is connected to the first low noise amplifier through a first connector.
Optionally, the attenuator is connected to the radio frequency processor, or the attenuator is connected to the adjusting resistor.
Optionally, the receiving link further includes:
the limiter, the second combiner, the second low-noise amplifier and the third combiner;
the limiter is connected with the radio frequency amplifier of the receiving link and the second combiner, the second combiner is further connected with the first radio frequency link and the third combiner, the third combiner is further connected with the second radio frequency link and the third radio frequency link, and the first radio frequency link, the second radio frequency link and the third radio frequency link are all connected with the radio frequency processor.
Optionally, the rf amplifier of the receiving chain is connected to the limiter through a second connector.
Optionally, the first radio frequency link includes:
a first acoustic surface filter; the first acoustic surface filter is respectively connected with the second combiner and the radio frequency processor.
Optionally, the second radio frequency link includes:
a second acoustic surface filter; and the second acoustic surface filter is respectively connected with the third combiner and the radio frequency processor.
Optionally, the third radio frequency link includes:
a third acoustic surface filter; and the third acoustic surface filter is respectively connected with the third combiner and the radio frequency processor.
Optionally, the impedance matching circuit includes a pi-type impedance matching circuit and/or a T-type impedance matching circuit.
The application provides a combiner includes: the device comprises a first combiner, a transmitting link and a receiving link; the first combiner is connected with an antenna, and the transmitting link and the receiving link are both connected with the first combiner; the transmitting link and the receiving link are both provided with an impedance matching circuit and a radio frequency amplifier; the transmitting link is used for transmitting L-band signals and is provided with an attenuator; the receiving chain comprises a first radio frequency chain used for receiving S frequency band signals, a second radio frequency chain used for receiving B1 frequency band signals and a third radio frequency chain used for receiving B3 frequency band signals.
It can be seen that, in the combiner provided in the present application, three receiving bands of B1, B2, and B3 are integrated in the receiving link, and the receiving link is further integrated with the transmitting link, so that the combiner is compatible with four bands of B1, B3, S, and L. In addition, an attenuator is arranged in the transmitting link, and the transmitting gain can be adjusted through the attenuator. Meanwhile, the transmitting link and the receiving link are both provided with the impedance matching circuit and the radio frequency amplifier, so that the insertion loss can be reduced under the action of the impedance matching circuit and the radio frequency amplifier, and the insertion loss is within an acceptable range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a combiner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a portion of a transmit chain and a receive chain according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of another part of a transmission link provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a part of a receiving link according to an embodiment of the present application.
Detailed Description
The core of the application is to provide a combiner which is compatible with four frequency bands, adjustable in transmission gain and low in insertion loss.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a combiner according to an embodiment of the present application, and referring to fig. 1, the combiner mainly includes:
a first combiner 10, a transmission link 20 and a reception link 30; the first combiner 10 is connected with an antenna, and the transmitting link 20 and the receiving link 30 are both connected with the first combiner 10; the transmitting chain 20 and the receiving chain 30 are both provided with an impedance matching circuit and a radio frequency amplifier; the transmitting link 20 is used for transmitting the L-band signal, and the transmitting link 20 is provided with an attenuator AT; the receive chain 30 comprises a first radio frequency chain 301 for receiving S band signals, a second radio frequency chain 302 for receiving B1 band signals and a third radio frequency chain 303 for receiving B3 band signals.
Specifically, the combiner provided by the present application includes a first combiner 10, a transmitting link 20, and a receiving link 30, where the transmitting link 20 and the receiving link 30 are both connected to the first combiner 10, and the first combiner 10 is connected to an antenna through an SMA interface. In order to make the transmission gain of the combiner adjustable, the transmission link 20 of the combiner is provided with an attenuator AT, so that the transmission gain can be adjusted by setting the level of the relevant pin of the attenuator AT, so as to meet the transmission gain requirement. In addition, in order to make the combiner compatible with four frequency bands of B1, B3, S, and L, on the basis of the combiner integrating the transmitting link 20 and the receiving link 30, the receiving link 30 integrates three frequency bands of B1, B3, and S, and three radio frequency links of B1, B3, and S, that is, the first radio frequency link 301, the second radio frequency link 302, and the third radio frequency link 303 are set. The first radio frequency link 301 is used for receiving S frequency band signals, the second radio frequency link 302 is used for receiving B1 frequency band signals, and the third radio frequency link 303 is used for receiving B3 frequency band signals. In addition, in order to keep the insertion loss within an acceptable range, the impedance matching circuit and the radio frequency amplifier are provided in both the transmission chain 20 and the reception chain 30, so that the insertion loss can be reduced by the impedance matching circuit and the radio frequency amplifier. The impedance matching circuit may include a pi-type impedance matching circuit and/or a T-type impedance matching circuit.
Referring to fig. 2 (COM 1 in fig. 2 represents the first combiner 10) and as shown in fig. 3, in a specific embodiment, the transmission chain 20 further includes: a first band pass filter BF1, a second band pass filter BF2 and a first low noise amplifier LNA 1; the first band pass filter BF1 is connected to the rf amplifier AMP1, the attenuator AT and the first low noise amplifier LNA1 of the transmit chain 20, the first low noise amplifier LNA1 is further connected to the second band pass filter BF2, and the second band pass filter BF2 is further connected to the rf processor.
Specifically, in this embodiment, the transmission link 20 mainly includes a radio frequency amplifier, two band pass filters, i.e., a first band pass filter BF1 and a second band pass filter BF2, a low noise amplifier, and an impedance matching circuit (e.g., a pi-type impedance matching circuit formed by resistors R5, R6, and R7 in fig. 3). The first band-pass filter BF1 is connected to the rf amplifier AMP1, the attenuator AT and the first low noise amplifier LNA1, respectively, the first low noise amplifier LNA1 is further connected to the second band-pass filter BF2, and the second band-pass filter BF2 is further connected to the rf processor. RDSS _ L in fig. 3 indicates the location where the second band-pass filter BF2 is connected to the radio frequency processor. After passing through the second band-pass filter BF2, the first low-noise amplifier LNA1, the second band-pass filter BF2, the attenuator AT, and the radio-frequency amplifier AMP1, the signal is input to the first combiner 10, and is finally transmitted through the antenna connected to the first combiner 10.
Further, in a specific embodiment, the first band pass filter BF1 is connected to the first low noise amplifier LNA1 via a first connector. That is, the transmission chain 20 is divided into two parts of circuit in this embodiment. As shown in fig. 2, the rf amplifier AMP1, the attenuator AT, and the first band pass filter BF1 are located in the first sub-circuit, as shown in fig. 3, the second band pass filter BF2 and the first low noise amplifier LNA1 are located in the second sub-circuit, and the first sub-circuit and the second sub-circuit are connected by the first connector MCX, so that the application flexibility of the combiner is greatly improved.
Further, the transmission gain may be adjusted by software or hardware, so that the attenuator AT may be connected to the radio frequency processor, or the attenuator AT may be connected to the adjusting resistor, and may be set differently according to actual needs. When the attenuator AT is connected with the radio frequency processor, the transmission gain is adjusted by inputting different high and low levels to the attenuator AT through the radio frequency processor. When the attenuator AT is connected with the adjusting resistor, the level of the input attenuator AT can be changed by connecting the adjusting resistor with a power supply or grounding, and then the transmission gain is adjusted.
Referring to fig. 2 and 4, in a specific embodiment, the receiving chain 30 further includes: the limiter LI, the second combiner COM2, the second low noise amplifier LNA2 and the third combiner COM 3; the limiter LI is connected to the rf amplifier AMP2 and the second hybrid COM2 of the receiving link 30, the second hybrid COM2 is further connected to the first rf link 301 and the third hybrid COM3, and the third hybrid COM3 is further connected to the second rf link 302 and the third rf link 303.
Specifically, in this embodiment, the receiving link 30 mainly includes a radio frequency amplifier, a limiter LI, two power dividers, a first radio frequency link 301, a second radio frequency link 302, a third radio frequency link 303, and an impedance matching circuit (for example, a pi-type impedance matching circuit formed by resistors R1, R2, and R3 in fig. 2, a T-type impedance matching circuit formed by capacitors C1, C2, and C3, and a pi-type impedance matching circuit formed by resistors R8, R9, and R10 in fig. 4). The amplitude limiter LI is respectively connected with the radio frequency amplifier AMP2 and the second combiner COM2, the second combiner COM2 is further connected with the first radio frequency link 301 and the third combiner COM3, and the third combiner COM3 is further connected with the second radio frequency link 302 and the third radio frequency link 303. The first radio frequency link 301, the second radio frequency link 302 and the third radio frequency link 303 are all connected with a radio frequency processor. RDSS _ S, RNSS _ B1 and RNSS _ B3 in fig. 4 represent the locations where the first radio frequency link 301, the second radio frequency link 302 and the third radio frequency link 303 are connected to the radio frequency processor, respectively. The signal passes through the first combiner 10, the rf amplifier AMP2 of the receiving link 30, the limiter LI, and the second combiner COM2, and then is output to the first rf link 301 and the third combiner COM3, and further output to the second rf link 302 and the third rf link 303 through the third combiner COM 3. Finally, the first rf link 301, the second rf link 302 or the third rf link 303 outputs the signal of the corresponding frequency band to the rf processor.
Further, in a specific embodiment, the rf amplifier of the receiving chain 30 is connected to the limiter LI via a second connector. That is to say, in the present embodiment, the receiving link 30 is divided into two parts, as shown in fig. 2, the rf amplifier AMP2 is located in the first part, as shown in fig. 4, the limiter LI, the second combiner COM2, the third combiner COM3, and the first rf link 301 to the third rf link 303 are located in the second part, and the first part and the second part are connected by a connector, so that the application flexibility of the combiner is greatly improved.
Further, referring to fig. 4, the first radio frequency link 301 includes: a first acoustic surface filter SAW 1; the first acoustic surface filter SAW1 is respectively connected with the second combiner COM2 and the radio frequency processor. The second radio frequency link 302 comprises: a second acoustic surface filter SAW 2; the second acoustic surface filter SAW2 is respectively connected with the third combiner COM3 and the radio frequency processor. The third radio frequency link 303 comprises: a third acoustic surface filter SAW 3; the third acoustic table filter SAW3 is respectively connected with the third combiner COM3 and the radio frequency processor.
Further, a plurality of capacitors connected in parallel may be connected between the first combiner 10 and the SMA interface, and the plurality of capacitors connected in parallel are connected to the radio frequency processor to perform filtering and energy storage functions. In addition, the rf amplifier in the transmit chain 20 may further be connected to a power circuit composed of capacitors C4, C5, inductor L, and resistor R4, wherein the resistor R4 is connected to a 5V power supply (V5 POD). Thus, in practical applications, when the required voltage is 5V, the RF processor may not output the voltage, i.e., no output is provided from RF _ OUT _ PWR, and the required voltage is provided by the 5V power supply connected to the resistor R4. When the required voltage is higher than 5V, the corresponding voltage is provided by the radio frequency processor, and the RF _ OUT _ PWR has an output.
To sum up, the combiner provided in the present application includes: the device comprises a first combiner, a transmitting link and a receiving link; the first combiner is connected with an antenna, and the transmitting link and the receiving link are both connected with the first combiner; the transmitting link and the receiving link are both provided with an impedance matching circuit and a radio frequency amplifier; the transmitting link is used for transmitting L-band signals and is provided with an attenuator; the receiving chain comprises a first radio frequency chain used for receiving S frequency band signals, a second radio frequency chain used for receiving B1 frequency band signals and a third radio frequency chain used for receiving B3 frequency band signals. The combiner circuit is simple, low in power consumption and strong in compatibility. The B1, B2 and B3 three receiving frequency bands are integrated in a receiving link, and the receiving link is further integrated with a transmitting link, so that the combiner is compatible with the four frequency bands of B1, B3, S and L. In addition, an attenuator is arranged in the transmitting link, and the transmitting gain can be adjusted through the attenuator. Meanwhile, the transmitting link and the receiving link are both provided with the impedance matching circuit and the radio frequency amplifier, so that the insertion loss can be reduced under the action of the impedance matching circuit and the radio frequency amplifier, and the insertion loss is within an acceptable range. In addition, the combiner transmitting and receiving links are distinguished obviously, the isolation degree is high, four radio frequency links B1/B3/S and L can be selected according to requirements, and two receiving and transmitting links can also be selected according to requirements.
Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The combiner provided in the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A combiner, comprising:
the device comprises a first combiner, a transmitting link and a receiving link; the first combiner is connected with an antenna, and the transmitting link and the receiving link are both connected with the first combiner; the transmitting link and the receiving link are both provided with an impedance matching circuit and a radio frequency amplifier; the transmitting link is used for transmitting L-band signals and is provided with an attenuator; the receiving chain comprises a first radio frequency chain used for receiving S frequency band signals, a second radio frequency chain used for receiving B1 frequency band signals and a third radio frequency chain used for receiving B3 frequency band signals.
2. The combiner of claim 1, wherein the transmit chain further comprises:
a first band pass filter, a second band pass filter and a first low noise amplifier;
the first band-pass filter is connected with the radio-frequency amplifier, the attenuator and the first low-noise amplifier of the transmitting link, the first low-noise amplifier is further connected with the second band-pass filter, and the second band-pass filter is further connected with a radio-frequency processor.
3. The combiner of claim 2, wherein the first band pass filter and the first low noise amplifier are connected by a first connector.
4. The combiner of claim 3, wherein the attenuator is connected to the radio frequency processor, or the attenuator is connected to a tuning resistor.
5. The combiner of claim 1, wherein the receive chain further comprises:
the limiter, the second combiner, the second low-noise amplifier and the third combiner;
the limiter is connected with the radio frequency amplifier of the receiving link and the second combiner, the second combiner is further connected with the first radio frequency link and the third combiner, the third combiner is further connected with the second radio frequency link and the third radio frequency link, and the first radio frequency link, the second radio frequency link and the third radio frequency link are all connected with a radio frequency processor.
6. The combiner of claim 5, wherein the radio frequency amplifier of the receive chain is connected to the limiter via a second connector.
7. The combiner of claim 6, wherein the first radio frequency link comprises:
a first acoustic surface filter; the first acoustic surface filter is respectively connected with the second combiner and the radio frequency processor.
8. The combiner of claim 7, wherein the second radio frequency link comprises:
a second acoustic surface filter; and the second acoustic surface filter is respectively connected with the third combiner and the radio frequency processor.
9. The combiner of claim 8, wherein the third radio frequency link comprises:
a third acoustic surface filter; and the third acoustic surface filter is respectively connected with the third combiner and the radio frequency processor.
10. The combiner of claim 1, wherein the impedance matching circuit comprises a pi-type impedance matching circuit and/or a T-type impedance matching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022383690.7U CN213243994U (en) | 2020-10-23 | 2020-10-23 | Combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022383690.7U CN213243994U (en) | 2020-10-23 | 2020-10-23 | Combiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213243994U true CN213243994U (en) | 2021-05-18 |
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ID=75879863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022383690.7U Active CN213243994U (en) | 2020-10-23 | 2020-10-23 | Combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213243994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290973A (en) * | 2020-10-23 | 2021-01-29 | 国信军创(岳阳)六九零六科技有限公司 | Combiner |
| CN112290973B (en) * | 2020-10-23 | 2024-07-09 | 湖南六九零六信息科技股份有限公司 | Combiner |
-
2020
- 2020-10-23 CN CN202022383690.7U patent/CN213243994U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290973A (en) * | 2020-10-23 | 2021-01-29 | 国信军创(岳阳)六九零六科技有限公司 | Combiner |
| CN112290973B (en) * | 2020-10-23 | 2024-07-09 | 湖南六九零六信息科技股份有限公司 | Combiner |
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Address after: 414009 intersection of Yungang road and Yunxin Road, Xingang District, Chenglingji, Yueyang City, Hunan Province Patentee after: Hunan 6906 Information Technology Co.,Ltd. Address before: 414009 intersection of Yungang road and Yunxin Road, Xingang District, Chenglingji, Yueyang City, Hunan Province Patentee before: GUOXIN JUNCHUANG (YUEYANG) 6906 TECHNOLOGY Co.,Ltd. |
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