CN214591429U

CN214591429U - Radio frequency transceiver based on quadruplex ware

Info

Publication number: CN214591429U
Application number: CN202121016571.6U
Authority: CN
Inventors: 李给武; 彭峰
Original assignee: Shenzhen Chinachip Technology Co ltd
Current assignee: Shenzhen Chinachip Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-02
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses a radio frequency transceiver based on a quadruplex ware, including frequency channel change over switch, the quadruplex ware, signal transceiver, treater and amplifier, frequency channel change over switch, quadruplex ware and amplifier connect gradually, the quadruplex ware includes ascending filter subassembly and descending filter subassembly, the frequency of ascending filter subassembly and descending filter subassembly is different, the frequency setting of first ascending filter and first descending filter, will have a plurality of radio frequency signals of frequency range inclusion relation to pass through first ascending filter and first descending filter simultaneously, realize the receiving and dispatching operation of a quadruplex ware to three frequency channels, signal transceiver establishes two input ends, the amplifier sets up two output ends, the end of frequency channel change over switch has been reduced to one, the receiving and dispatching end setting of every component in the equipment has been reduced, the reduction of port overhead can reduce frequency channel change over switch's configuration, on one hand, the cost of the device is saved, and simultaneously, the signal attenuation caused by the introduction of the switch is reduced, and the high performance of the equipment is kept.

Description

Radio frequency transceiver based on quadruplex ware

Technical Field

The utility model relates to a radio frequency transceiver equipment field especially relates to a radio frequency transceiver equipment based on quadruplex ware.

Background

Communication products such as tablet personal computers, smart phones, smart watches and the like realize the acquisition and transmission of data signals by receiving various radio frequency signals, different radio frequency signals correspond to different frequency ranges, different radio frequency signals also need filters with different frequencies, for communication product design and production enterprises, the use scenes and the ranges of the products need to be comprehensively considered, the production cost of the products is combined, the radio frequency signals of partial frequency bands cannot be completely within the application range of the products, only the filters with the specified frequency ranges need to be set for the frequency bands related to the product use, but in the environment of the global market at present, one communication device usually has multiple frequency band requirements to meet the use of personnel in different areas, the transceiving function of multiple frequency bands is realized by simply stacking duplexers, the design difficulty of the PCBA board is increased, Poor signal shielding and anti-interference capability and the like.

For example, in the wireless communication bands Band1(B1), Band3(B3) and Band4(B4) of the FDD LTE Band, since B4 belongs to the overseas Band, in some domestic designs, B4 is not designed into products in product design projects due to cost reasons in general, but as domestic communication products gradually expand the overseas market, the products face new Band requirements of new customers. The common mode is to add a duplexer to increase frequency band reception, so that the design difficulty of the PCBA with limited board layout area is increased by geometric multiple, and in addition, various additional parasitic parameters, interference, noise and the like are added, so that the EMC design of the product becomes a difficult problem for product developers. If one duplexer is directly used to realize the RF transceiving function corresponding to the three frequency bands, the manufacturing process of the duplexer, the production cost caused by the manufacturing process of the duplexer, and the actual transmitting and receiving performance of the corresponding frequency band are considered, so that the practical application of the duplexer in products is restricted. Compared with the traditional discrete device scheme, the six-multiplexer scheme saves the number of devices and the board layout area, but the number of port overhead is reduced by two at the TXM end. The manufacturing cost of one duplexer is currently higher than the total cost of three duplexers. In performance, the isolation of each signal cannot be optimal due to more integrated frequency bands of the hexaplexer, and moreover, performance requirements of different three frequency bands are considered in index debugging, especially in debugging of a frequency band public end, and the difficulty of actual use is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a radio frequency transceiver based on quadruplex ware aims at solving the unable problem of compromise multifrequency section, low cost and high performance among the current radio frequency transceiver.

According to the embodiment of the application, the radio frequency transceiving equipment based on the quadruplex comprises a frequency band change-over switch, the quadruplex, a signal transceiver, a processor and an amplifier, wherein the frequency band change-over switch, the quadruplex and the amplifier are sequentially connected, the output end of the amplifier is connected with the quadruplex, and the processor is connected with the signal transceiver; the quadruplex device comprises an uplink filtering component and a downlink filtering component, and the frequencies of the uplink filtering component and the downlink filtering component are different; the uplink filtering component comprises a first uplink filter, the first uplink filter receives at least two uplink frequency band signals, the frequency range of one uplink frequency band signal comprises the range of other uplink frequency band signals, and the frequency of the first uplink filter is the same as the uplink frequency band signal in the maximum range; the downlink filtering component comprises a first downlink filter, the first downlink filter receives at least two downlink frequency band signals, the frequency range of one downlink frequency band signal comprises the range of other downlink frequency band signals, and the frequency of the first downlink filter is the same as that of the downlink frequency band signal in the maximum range.

Preferably, the upstream filtering component further comprises a second upstream filter, and the frequency of the second upstream filter is different from the frequency of the first upstream filter; the downlink filtering component further comprises a second downlink filter, and the frequency of the second downlink filter is different from the frequency of the first downlink filter.

Preferably, the frequency of the first uplink filter is 1710-1785MHz, and the frequency of the first downlink filter is 2110-2170 MHz.

Preferably, the input ends of the first uplink filter and the second uplink filter are connected to the amplifier, and the output ends are connected to the frequency band switch; the input ends of the first downlink filter and the second downlink filter are connected with the frequency band selector switch, and the output ends of the first downlink filter and the second downlink filter are connected with the signal transceiver.

Preferably, the frequency of the first uplink filter is 1710-1770MHz, and the frequency of the first downlink filter is 2110-2170 MHz.

The utility model provides a radio frequency transceiver based on quadruplex ware has following beneficial effect:

1. the frequency band change-over switch, the quadruplex ware and the amplifier are sequentially connected, the output end of the amplifier is connected with the quadruplex ware, the processor is connected with the signal transceiver, the uplink filter component and the downlink filter component are arranged in the quadruplex ware, based on the frequency setting of the first uplink filter and the first downlink filter, a plurality of radio-frequency signals with frequency range containing relation pass through the first uplink filter and the first downlink filter simultaneously, the receiving and transmitting operation of the quadruplex ware to three frequency bands is realized, the signal transceiver only needs to be provided with two input ports, the amplifier only needs to be provided with two output ports, and the port of the frequency band change-over switch is reduced to one, the receiving and transmitting port setting of each component in the equipment is reduced, and the configuration of the frequency band change-over switch can be reduced on the premise of increasing frequency band requirements due to the reduction of port cost, on one hand, the cost of the device is saved, and simultaneously, the signal attenuation caused by the introduction of the switch is reduced. On the other hand, the number of the wiring lines is reduced along with the reduction of the number of the devices and the expense of the ports, the isolation between the signal lines is increased, the interference between the signals is reduced, the signal quality is greatly improved, the high performance of the equipment is ensured, and the board distribution area is also reduced. Meanwhile, compared with a hexaplexer, the quadrplexer is more mature in market use, lower in cost, less in integrated frequency band, better in isolation between signals, easier in debugging process and wider in use scene.

2. The quadruplex ware includes upstream filtering subassembly and downstream filtering subassembly, the frequency of upstream filtering subassembly and downstream filtering subassembly is different, that is to say that upstream filtering subassembly and downstream filtering subassembly can carry out ascending work and downstream work simultaneously based on the difference of frequency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a radio frequency transceiver device based on a quadruplex device according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a quadruplex device in a radio frequency transceiver device based on the quadruplex device according to a first embodiment of the present invention.

Fig. 3 is a data diagram of a quadroplexer-based radio frequency transceiver for debugging according to a first embodiment of the present invention.

Description of reference numerals:

1. a radio frequency transceiver based on a quadruplex device;

11. a frequency band switch;

12. a quadruplex device; 121. an uplink filtering component; 1211. a first upstream filter; 1212. a second upstream filter; 122. a downlink filtering component; 1221. a first downlink filter; 1222. a second downlink filter; 13. a signal transceiver; 14. a processor; 15. an amplifier.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Please refer to fig. 1 and fig. 2, a first embodiment of the present invention discloses a quadruplex rf Transceiver device 1, which includes a frequency band switch (TXM)11, a quadruplex 12, a Transceiver (Transceiver)13, a processor (CPU)14 and an amplifier (PA)15, wherein the frequency band switch 11, the quadruplex 12 and the amplifier 15 are sequentially connected, an output end of the amplifier 15 is connected to the quadruplex 12, and the processor 14 is connected to the Transceiver 13.

The frequency band switch 11 is a switch module for switching the frequency band of radio frequency communication, and the received or transmitted radio frequency signal is connected to the outside through the frequency band switch 11, the quadrupler 12 is used for filtering the received or transmitted radio frequency signal, to output a radio frequency signal in a designated frequency range, the signal transceiver 13 is used for receiving the radio frequency signal filtered by the quadplexer 12 and transmitting the radio frequency signal to the processor 14, or the signal generator 13 is used for receiving the signal sent by the processor 14 and sending the signal to the amplifier 15, the amplifier 15 is used for processing the radio frequency signal sent by the signal generator 13, then sending the processed radio frequency signal to the quadplexer 12, and finally sending the radio frequency signal to the outside through the frequency band switch 11, that is, when the radio frequency signal is in an uplink state, after the processor 14 generates a signal, the signal is respectively transmitted to the outside through the signal transceiver 13, the amplifier 14, and the quadplexer 12 via the frequency band switch 11. When the radio frequency signal is in a downlink state, the external radio frequency signal is received by the frequency band switch 11, passes through the quadruplex 12 and the signal transceiver 13 in sequence, and is finally sent to the processor 14.

The quadplexer 12 includes an uplink filtering component 121 and a downlink filtering component 122, where frequencies of the uplink filtering component 121 and the downlink filtering component 122 are different, that is, the uplink filtering component 121 and the downlink filtering component 122 may perform uplink operation and downlink operation simultaneously based on the difference of the frequencies.

The uplink filtering component 121 includes a first uplink filter 1211, where the first uplink filter 1211 receives at least two uplink frequency band signals, a frequency range of one of the uplink frequency band signals includes ranges of other uplink frequency band signals, and a frequency of the first uplink filter 1211 is the same as the uplink frequency band signal in the maximum range.

The downlink filtering component 122 includes a first downlink filter 1221, where the first downlink filter 1221 receives at least two downlink frequency band signals, a frequency range of the downlink frequency band signal includes ranges of other downlink frequency band signals, and a frequency of the first downlink filter 1221 is the same as the downlink frequency band signal in the maximum range.

For example, in the present embodiment, as shown in fig. 1, the UL uplink frequency range of B1 is 1920-1980MHz, and the DL downlink frequency range of B1 is 2110-2170 MHz. The UL uplink frequency range of B3 is 1710-. It can be seen that, in the B1, B3 and B4 frequency bands, the UL uplink frequency range of B4 is included in the UL uplink frequency range of B3, and the DL downlink frequency range of B4 is included in the DL downlink frequency range of B1, then the frequency range of the first uplink filter 1211 is set as: 1710-.

For example, in some other embodiments, the UL uplink frequency range of B10 is 1710-1770MHz, the DL downlink frequency range of B10 is 2110-2170MHz, the B10 uplink frequency range is also included in the above-mentioned B3 uplink frequency range, or the B10 uplink frequency range includes the above-mentioned B4 uplink frequency range, and the downlink frequency range of B10 is the same as that of B1, or includes the downlink frequency range of B4, then correspondingly, the frequency of the first uplink filter 1211 may be 1710-1770MHz, and the frequency of the first downlink filter 1221 may be 2110-170 MHz, to complete the processing on B1, B4, and B10, in particular, in this embodiment, since the downlink frequencies of B1, B4, and B10 all have an inclusive relationship, at this time, one of the first downlink filters 1221 may be set separately, and the downlink operation may be completed at the same time, so as to further simplify the apparatus, and reduce the arrangement of components, the cost is saved, and the board distribution area and the wiring length are reduced. The effect of processing uplink frequency and downlink frequency of two frequency bands by using one filter can be achieved, in this embodiment, only B1, B3, and B4 are taken as examples for illustration, and the present disclosure is not limited thereto.

Optionally, as another embodiment, the UL uplink frequency range of B65 is 1920-2010MHz, the DL downlink frequency range of B65 is 2110-2200MHz, the UL uplink frequency range of B66 is 1710-1780MHz, and the DL downlink frequency range of B65 is 2110-2200MHz, that is, B65, B66, and B3 are also suitable for the processing of the quadruplex 12 in this embodiment, as long as the frequency of the first uplink filter 1211 is set to 1710-1785MHz, the frequency of the first downlink filter is set to 2110-2200MHz, and of course, in other radio frequency bands, there are other frequency bands having a frequency inclusion relationship, which are all suitable for the processing by the quadruplex processor 12 in this scheme, as long as one frequency range with the largest frequency is selected as the frequencies of the first uplink filter 1211 and the first downlink filter 1221 in a plurality of frequency ranges having the inclusion relationship, which is not described herein again.

It is to be understood that the upstream filtering component 121 further includes a second upstream filter 1212, and the frequency of the second upstream filter 1212 is different from the frequency of the first upstream filter 1211. The downstream filtering component 122 further includes a second downstream filter 1222, the second downstream filter 1222 having a frequency different from the first downstream filter 1212. For example, in the above examples of B1, B3, and B4, the first uplink filter 1211 processes B3 and B4 simultaneously, the second uplink filter 1212 processes B1 separately, and correspondingly, the first downlink filter 1221 processes B1 and B4 simultaneously, and the second downlink filter 1222 processes B3 separately, that is, the quadrupler 12 composed of the first uplink filter 1211, the second uplink filter 1212, the first downlink filter 1221, and the second downlink filter 1222 is configured to implement processing of 3 frequency bands (B1, B3, and B4), and the RF transmitting and receiving functions of B1, B3, and B4 can be implemented only by modifying corresponding driving codes through software Modem on the basis of the quadrupler 12 without adding a duplexer for B4.

It is understood that the input terminals of the first uplink filter 1211 and the second uplink filter 1212 are connected to the amplifier 15, and the output terminal is connected to the band switch 11. The input ends of the first downlink filter 1221 and the second downlink filter 1222 are connected to the band switch 11, the output end of the first downlink filter 1221 and the second downlink filter 1222 is connected to the signal transceiver 13, the first uplink filter 1211 and the second uplink filter 1212 filter the radio frequency signal processed by the amplifier 15 and send the radio frequency signal to the band switch 11, and send the radio frequency signal to the signal transceiver 13, and the first downlink filter 1221 and the second downlink filter 1222 filter the external radio frequency signal received by the band switch 11 and send the external radio frequency signal to the signal transceiver 13.

Referring to fig. 3, the present invention provides a data diagram for verifying the performance of the rf transceiver 1 based on the quadruplex device in the laboratory, which includes the following steps:

step S100: calibrating a pass-through: the result shows that the three frequency band calibrations are PASS, which indicates that the software Modem code configuration is OK and the frequency band access on the hardware is normal.

Step S200: non-signaling test: the PASS result shows that the performance indexes of the three frequency bands meet the requirements of the 3GPP protocol.

Step S300: active signaling test: the key indicators for partial transmission and reception of the three frequency bands after debugging are listed as shown in fig. 3

Step S400: card insertion real network test: after the mobile platform burns firmware and a Modem, SIM cards of three operators are inserted domestically, and the normal switching of frequency bands B1 and B3 is verified. Since the B4 belongs to the overseas American frequency band, the function of the mobile platform is verified to be required to go to the operator attribution with the B4 in overseas, and as a result, the mobile platform finds SIM card signals in the coverage area of the AT & T operator B4 in a certain country in America, which indicates that the B4 frequency band is switched normally.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A radio frequency transceiver based on a quadruplex ware which characterized in that: the frequency band switching circuit comprises a frequency band switching switch, a quadruplex device, a signal transceiver, a processor and an amplifier, wherein the frequency band switching switch, the quadruplex device and the amplifier are sequentially connected, the output end of the amplifier is connected with the quadruplex device, and the processor is connected with the signal transceiver;

the quadruplex device comprises an uplink filtering component and a downlink filtering component, and the frequencies of the uplink filtering component and the downlink filtering component are different;

the uplink filtering component comprises a first uplink filter, the first uplink filter receives at least two uplink frequency band signals, the frequency range of one uplink frequency band signal comprises the range of other uplink frequency band signals, and the frequency of the first uplink filter is the same as the uplink frequency band signal in the maximum range;

the downlink filtering component comprises a first downlink filter, the first downlink filter receives at least two downlink frequency band signals, the frequency range of one downlink frequency band signal comprises the range of other downlink frequency band signals, and the frequency of the first downlink filter is the same as that of the downlink frequency band signal in the maximum range.

2. A quadplexer-based radio frequency transceiver as claimed in claim 1, wherein: the upstream filtering component further comprises a second upstream filter, and the frequency of the second upstream filter is different from the frequency of the first upstream filter;

the downlink filtering component further comprises a second downlink filter, and the frequency of the second downlink filter is different from the frequency of the first downlink filter.

3. A quadplexer-based radio frequency transceiver as claimed in claim 1, wherein: the frequency of the first uplink filter is 1710-1785MHz, and the frequency of the first downlink filter is 2110-2170 MHz.

4. A quadplexer-based radio frequency transceiver as claimed in claim 2, wherein: the input ends of the first uplink filter and the second uplink filter are connected with the amplifier, and the output ends of the first uplink filter and the second uplink filter are connected with the frequency band selector switch;

the input ends of the first downlink filter and the second downlink filter are connected with the frequency band selector switch, and the output ends of the first downlink filter and the second downlink filter are connected with the signal transceiver.

5. A quadplexer-based radio frequency transceiver as claimed in claim 1, wherein: the frequency of the first uplink filter is 1710-1770MHz, and the frequency of the first downlink filter is 2110-2170 MHz.