CN214591430U

CN214591430U - Mobile terminal with multiplexing antenna

Info

Publication number: CN214591430U
Application number: CN202121108725.4U
Authority: CN
Inventors: 李广君
Original assignee: Sichuan Kusai Technology Co ltd
Current assignee: Sichuan Kusai Technology Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-11-02
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a mobile terminal with multiplexing antennas, which comprises a mainboard, wherein the mainboard is provided with a first communication module, a receiving module, a second communication module and an antenna module; the first communication module, the receiving module and the second communication module are all connected with the antenna module, and the receiving module is connected with the first communication module and the second communication module; the antenna module is used for receiving and transmitting a first signal and a second signal, and when the first signal is received, the first communication module carries out power amplification on the first signal and then transmits the first signal to the receiving module for processing; the second communication module performs frequency division and power amplification on the second signal and transmits the second signal to the receiving module for processing; the receiving module multiplexes one antenna in the antenna module when receiving the first signal and the second signal at the same time, and the first signal and the second signal are separated and then transmitted and processed respectively. The first signal and the second signal are received by the receiving module at the same time, so that one antenna is multiplexed, the number of the total antennas is reduced, the difficulty in placing the antennas is reduced, and the performance of the antennas is guaranteed to reach the standard.

Description

Mobile terminal with multiplexing antenna

Technical Field

The utility model relates to a radio frequency technology field especially relates to a mobile terminal that antenna is multiplexing.

Background

At present, the popularity of 5G (fifth generation mobile communication technology) mobile phones is higher and higher, and the mobile phones are favored by users due to the ultrahigh uploading and downloading rates. The high download speed is benefited from the fact that a 5G mobile phone uses a multi-antenna design, which is different from a 4G mainstream dual-antenna design, and 4-6 antennas are generally needed for a 5G antenna. This results in a 5G handset with at least 4 or more antennas. However, since the mobile phone is not large in size, it is not easy to put 6 antennas down around the mobile phone, and if more antennas are needed, the difficulty is higher, and the performance of the antennas can hardly meet the standard requirements.

Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide a mobile terminal with a multiplexing antenna to solve the problem that the number of antennas of the existing 5G mobile phone is large and is not easy to be placed.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a mobile terminal with antenna multiplexing comprises a mainboard, wherein a first communication module, a receiving module, a second communication module and an antenna module are arranged on the mainboard; the first communication module, the receiving module and the second communication module are all connected with the antenna module, and the receiving module is connected with the first communication module and the second communication module;

the antenna module is used for transceiving a first signal and a second signal,

when receiving a signal, the first communication module amplifies the first signal and transmits the first signal to the receiving module for signal processing; the second communication module performs frequency division and power amplification on the second signal and then transmits the second signal to the receiving module for signal processing;

the receiving module receives the first signal and the second signal independently or simultaneously according to the working mode; and simultaneously, one antenna in the antenna module is multiplexed during receiving, and the first signal and the second signal are separated and then are respectively transmitted and processed.

In the mobile terminal with antenna multiplexing, the antenna module comprises a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the first antenna is connected with the first communication module, and the second antenna is connected with the receiving module; the third antenna, the fourth antenna and the fifth antenna are all connected with the second communication module.

In the mobile terminal with the antenna multiplexing function, the second communication module comprises a first frequency band power amplification unit, a second frequency band power amplification unit, a first frequency divider, a second frequency divider and a third frequency divider; the first frequency band power amplification unit is connected with the first frequency divider, the second frequency divider, the third frequency divider and the receiving module; the second frequency band power amplifier unit is connected with the first frequency divider, the second frequency divider, the third frequency divider and the receiving module; the first frequency divider is connected with the third antenna, the second frequency divider is connected with the fourth antenna, and the third frequency divider is connected with the fifth antenna;

each frequency divider separates the second signal according to the frequency band, transmits the first frequency band signal to the first frequency band power amplification unit, and transmits the second frequency band signal to the second frequency band power amplification unit;

the first frequency band power amplification unit is used for carrying out power amplification on a first frequency band signal in the second signal;

and the second frequency band power amplifier unit is used for carrying out power amplification on a second frequency band signal in the second signal.

In the mobile terminal with the antenna multiplexing function, the receiving module comprises a medium-frequency transceiver, a first access unit, a second access unit and a fourth frequency divider; the intermediate frequency transceiver is connected with the first access unit and the second access unit; the fourth frequency divider is connected with the first access unit, the second access unit and the second antenna; the intermediate frequency transceiver is connected with the first communication module, the first frequency band power amplification unit and the second frequency band power amplification unit;

the fourth frequency divider is used for separating a first signal and a second signal which are simultaneously received by the second antenna, the first signal is transmitted to the intermediate frequency transceiver through the first access unit for signal processing, and the second signal is transmitted to the intermediate frequency transceiver through the second access unit for signal processing.

In the mobile terminal with antenna multiplexing, the first path unit comprises a first switch, a first filter, a second filter and a third filter;

the RFC pin of the first switch is connected with the first transmission end of the fourth frequency divider; the V1 pin and the V2 pin of the first switch are connected with the BPI0 pin and the BPI1 pin of the medium-frequency transceiver in a one-to-one mode; the RF1 pin, the RF2 pin and the RF3 pin of the first switch are connected with one end of the first filter, one end of the second filter and one end of the third filter in a one-to-one mode; the other end of the first filter, the other end of the second filter and the other end of the third filter are connected with a DRX0 pin, a DRX3 pin and a DRX3 pin of the medium-frequency transceiver in a one-to-one mode.

In the mobile terminal with antenna multiplexing, the second path unit comprises a second switch, a fourth filter, a fifth filter and a sixth filter;

the RFC pin of the second switch is connected with the first transmission end of the fourth frequency divider; the pins V1 and V2 of the second switch are connected with the pins BPI2 and BPI3 of the medium-frequency transceiver in a one-to-one manner; the RF1 pin, the RF2 pin and the RF3 pin of the second switch are connected with one end of the fourth filter, one end of the fifth filter and one end of the sixth filter in a one-to-one mode; the other end of the fourth filter, the other end of the fifth filter and the other end of the sixth filter are connected with a DRX7 pin, a DRX9 pin and a DRX11 pin of the medium-frequency transceiver in a one-to-one mode.

In the mobile terminal with the antenna multiplexing function, a TX0 pin of the intermediate frequency transceiver is connected with a signal input pin of the first communication module, a TX1 pin of the intermediate frequency transceiver is connected with a signal input pin of the first frequency band power amplification unit, and a TX2 pin of the intermediate frequency transceiver is connected with a signal input pin of the second frequency band power amplification unit.

In the mobile terminal with the antenna multiplexing function, the first signal is a 4G signal, and the working frequency Band comprises Band1, Band5 and Band 8; the second signal is a 5G signal, and the working frequency band comprises N41, N77, N78 and N79.

In the mobile terminal with antenna multiplexing, when the working mode is a 4G mode, the first antenna is used for transmitting signals, and the second antenna is used for receiving signals;

when the working mode is the 5G SA mode, any one of the second antenna to the fifth antenna is used for transmitting signals, and the other antennas are used for receiving signals;

when the operation mode is 5G NSA mode, the second antenna receives 4G signals and 5G signals simultaneously.

Compared with the prior art, the mobile terminal with the multiplexing antenna provided by the utility model comprises a mainboard, wherein the mainboard is provided with a first communication module, a receiving module, a second communication module and an antenna module; the first communication module, the receiving module and the second communication module are all connected with the antenna module, and the receiving module is connected with the first communication module and the second communication module; the antenna module is used for receiving and transmitting a first signal and a second signal, and when the antenna module receives the signals, the first communication module performs power amplification on the first signal and then transmits the first signal to the receiving module for signal processing; the second communication module performs frequency division and power amplification on the second signal and then transmits the second signal to the receiving module for signal processing; the receiving module receives the first signal and the second signal independently or simultaneously according to the working mode; and simultaneously, one antenna in the antenna module is multiplexed during receiving, and the first signal and the second signal are separated and then are respectively transmitted and processed. The receiving module is used for receiving the first signal and the second signal simultaneously, so that the first signal and the second signal can multiplex one antenna, the number of the total antennas is reduced by one, the difficulty of antenna placement is reduced on the premise of meeting the requirement of communication switching of the first signal and the second signal, and the standard reaching of the antenna performance is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a mobile terminal provided by the present invention.

Fig. 2 is a circuit diagram of a receiving module provided by the present invention.

Detailed Description

The utility model provides a multiplexing mobile terminal of antenna utilizes the inside metal frame of mobile terminal to do the antenna, can not cause the influence to mobile terminal's outward appearance. In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, the present invention provides a mobile terminal including a main board, wherein the main board is provided with a first communication module 100, a receiving module 200, a second communication module 300 and an antenna module 400; the first communication module 100, the receiving module 200 and the second communication module 300 are all connected to the antenna module 400, and the receiving module 200 is connected to the first communication module 100 and the second communication module 300. The antenna module is used for transceiving a first signal (in this embodiment, a 4G signal, compatible with a 2G signal and a 3G signal) and a second signal (in this embodiment, a 5G signal). When receiving a signal, the first communication module 100 performs power amplification on the first signal and then transmits the first signal to the receiving module 200 for signal processing, and the second communication module performs frequency division power amplification on the second signal at 300 and then transmits the second signal to the receiving module 200 for signal processing; the receiving module 200 receives the first signal and the second signal separately or simultaneously according to the operating mode, and multiplexes one antenna in the antenna module 400 during simultaneous reception, separates the first signal and the second signal, and then transmits and processes the separated signals respectively.

When transmitting signals, the receiving module 200 selects signals to be output according to the signal type and directly outputs the signals to the antenna module 400 for transmission, or transmits the signals to the first communication module 100 for amplification and then transmits the signals by the antenna module 400, or transmits the signals to the second communication module 300 for amplification and then transmits the signals by the antenna module 400.

This embodiment provides a scheme that reduces 5G cell-phone antenna quantity, and 6 antennas are needed at least to conventional scheme, and this embodiment can receive 4G signal and 5G signal simultaneously through designing a receiving module 200 for 4G, 5G can multiplex an antenna, make total antenna quantity accomplish 5 can, satisfy under the prerequisite that 4G and 5G switched communication, reduced the degree of difficulty that the antenna was placed, guaranteed the up to standard of antenna performance.

In this embodiment, 5 antennas are disposed in the antenna module 400, which are a first antenna 410, a second antenna 420, a third antenna 430, a fourth antenna 440, and a fifth antenna 450; the first antenna 410 is connected with the first communication module 100, and the second antenna 420 is connected with the receiving module 200; the third antenna 430, the fourth antenna 440 and the fifth antenna 450 are all connected to the second communication module 300. In different communication states, selecting a corresponding antenna, for example, when the mobile terminal operates in the 4G mode, the first antenna 410 serves as a main set antenna to transmit signals, the second antenna 420 serves as a diversity antenna to receive signals, and the other antennas do not operate; when operating in a 5G SA (stand alone) mode, the four antennas 420 to 450 operate as either transmitting or receiving, but only one antenna is transmitting and the other antennas are receiving; when operating in a Non-Standalone networking (Non-sta) mode, it is necessary to operate both 4G and 5G, and at this time, all five antennas are used (i.e., both antennas can operate), and the receiving module 200 is configured to receive both 4G signals and 5G signals.

The first communication module 100 is used for realizing 2G, 3G or 4G communication, and performing power amplification on 2G, 3G or 4G signals, and in specific implementation, an existing 4G power amplification module (which is compatible with 2G and 3G power amplification) can be adopted, and the model is preferably VC 7643-26.

The second communication module 300 is configured to implement 5G communication, and includes a 5G SA (stand-alone) mode and a 5G NSA (Non-stand-alone) mode. The 5G frequency band number is N41 (the 5G frequency band is 2515 MHz-2675 MHz), N77 (the 5G frequency band is 3300 MHz-4200 MHz), N78 (3300 MHz-3800 MHz) and N79 (the 5G frequency band is 4800 MHz-4900 MHz), and the N77-N79 can compatibly use one power amplifier unit. The second communication module 300 includes a first frequency band power amplifier unit 310, a second frequency band power amplifier unit 320, a first frequency divider 330, a second frequency divider 340, and a third frequency divider 350; the first frequency band power amplifier unit 310 is connected to the first frequency divider 330, the second frequency divider 340, the third frequency divider 350 and the receiving module 200; the second frequency band power amplifier unit 320 is connected with the first frequency divider 330, the second frequency divider 340, the third frequency divider 350 and the receiving module 200; the first divider 330 is connected to the third antenna 430, the second divider 340 is connected to the fourth antenna 440, and the third divider 350 is connected to the fifth antenna 450.

The first frequency band power amplifier unit 310 may adopt a 5G N41 power amplifier unit with a model number of VC7643-63, and only amplifies the first frequency band signal (e.g., the signal of the N41 frequency band) in the 5G signal. The second band amplifier unit 320 may adopt a 5G N79 power amplifier unit (which is compatible with power amplifiers of N77 and N78) with a model QM78207, and may amplify the second band signals (e.g., signals of N77, N78, and N99 bands) in the second signal (i.e., the 5G signal). The first frequency divider 330, the second frequency divider 340 and the third frequency divider 350 have the same function, and distinguish and output signals of different frequency bands, and transmit a first frequency band signal (i.e., a signal belonging to the N41 frequency band) to the first frequency band power amplification unit 310, and transmit a second frequency band signal (i.e., a signal belonging to the N77-N99 frequency bands) to the second frequency band power amplification unit 320; and the signal output by the frequency band power amplification unit can be transmitted to the connected antenna for transmission.

Referring to fig. 2, the receiving module 200 includes an intermediate frequency transceiver 210, a first pass unit 220, a second pass unit 230, and a fourth frequency divider 240; the intermediate frequency transceiver 210 is connected with the first path unit 220 and the second path unit 230; the fourth frequency divider 240 is connected to the first pass unit 220, the second pass unit 230, and the second antenna 420. The TX0 pin, the TX1 pin, and the TX2 pin of the if transceiver 210 are connected to the signal input pin of the first communication module 100, the signal input pin of the first band power amplifier unit 310, and the signal input pin of the second band power amplifier unit 320 in a one-to-one manner.

The fourth frequency divider 240 is configured to divide a signal received by the second antenna 420 into two paths of signals, which are a low-frequency signal (Band1/Band5/Band8) and a high-frequency signal (5G N41/N77/N79), in this embodiment, the 4G signal and the 5G signal are divided, the 4G signal is transmitted to the intermediate-frequency transceiver through the first path unit for signal processing, and the 5G signal is transmitted to the intermediate-frequency transceiver through the second path unit for signal processing, so that the two paths of signals can pass through at the same time without being affected by each other, the second antenna 420 can be multiplexed, and the total number of required antennas is reduced.

The intermediate frequency transceiver 210 (preferably MT6190 in the co-distribution department) is configured to process the radio frequency signal, for example, receive the radio frequency signal, perform analog-to-digital conversion, and then transmit the radio frequency signal to the CPU of the mobile phone. It is prior art and its specific functions are not described in detail here. The intermediate frequency transceiver 210 transmits the 4G signal to be output from its TX0 pin to the first communication module 100, and transmits the signal through the first antenna 410; the output 5G signal of N41 is transmitted from TX1 pin to the first frequency band power amplifier unit 310, and is transmitted through any one of the third antenna 430 to the fifth antenna 450; the 5G signals of N77-N79 which need to be output are transmitted to the second frequency band power amplifier unit 320 from the TX2 pin and are transmitted through any one of the third antenna 430 to the fifth antenna 450.

The first path unit 220 includes a first switch 221, a first filter 222, a second filter 223, and a third filter 224; the RFC pin of the first switch 221 is connected to the first transmission end of the fourth frequency divider 240; the pins V1 and V2 of the first switch 221 are connected with the pins BPI0 and BPI1 of the if transceiver 210 in a one-to-one manner; the RF1 pin, the RF2 pin, and the RF3 pin of the first switch 221 are connected to one end of the first filter 222, one end of the second filter 223, and one end of the third filter 224 one to one; the other end of the first filter 222, the other end of the second filter 223, and the other end of the third filter 224 are connected to the DRX0 pin, the DRX3 pin, and the DRX3 pin of the if transceiver 210 one-to-one.

The second path unit 230 includes a second switch 231, a fourth filter 232, a fifth filter 233, and a sixth filter 234; the RFC pin of the second switch 231 is connected to the first transmission end of the fourth frequency divider 240; the pins V1 and V2 of the second switch 231 are connected with the pins BPI2 and BPI3 of the if transceiver 210 in a one-to-one manner; the RF1 pin, the RF2 pin, and the RF3 pin of the second switch 231 are connected to one end of the fourth filter 232, one end of the fifth filter 233, and one end of the sixth filter 234; the other end of the fourth filter 232, the other end of the fifth filter 233, and the other end of the sixth filter 234 are connected to the DRX7 pin, the DRX9 pin, and the DRX11 pin of the if transceiver 210 one-to-one.

The models of the first switch 221 and the second switch 231 are preferably MXD8530, the intermediate-frequency transceiver 210 outputs a first set of switching signals (BPI _ BUS0 signal and BPI _ BUS1 signal) to control the switching of the internal path of the first switch 221, and the intermediate-frequency transceiver 210 outputs a second set of switching signals (BPI _ BUS2 signal and BPI _ BUS3 signal) to control the switching of the internal path of the second switch 231. The combination of the high and low levels of the two sets of switching signals determines which signal is outputted from, for example, when the BPI _ BUS0 signal is low and the BPI _ BUS1 signal is high, the RFC pin of the first switch 221 is connected to the RF1 pin; other connections are specifically shown in table 1 below.

TABLE 1

In this embodiment, the first filter 222 is configured to filter a 4G signal in a B1 (i.e., Band 1) Band, the second filter 223 is configured to filter a 4G signal in a B5 Band, the third filter 224 is configured to filter a 4G signal in a B8 Band, the fourth filter 232 is configured to filter a 5G signal in an N41 Band, the fifth filter 233 is configured to filter a 5G signal in an N77 Band, and the sixth filter 234 is configured to filter a 5G signal in an N79 Band. Since the frequency range of N77 encompasses N78, the N77 path is used for the 5G signal of the N78 band.

Taking the mobile terminal as a mobile phone as an example, the working principle is as follows:

1. when the mobile phone operates in the 4G mode, the first antenna 410 serves as a main set antenna to transmit signals, the second antenna 420 serves as a diversity antenna to receive signals, and when the operating frequency Band is, for example, Band 1:

when the mobile phone is turned on, the working frequency Band of the registered network is Band1, the intermediate frequency transceiver 210 outputs a low-level BPI _ BUS0 signal and a high-level BPI _ BUS1 signal, the second group of switching signals (the BPI _ BUS2 signal and the BPI _ BUS3 signal) is not output, and the RFC pin of the first switch 221 is connected with the RF1 pin at this time.

When receiving signals, the second antenna 420 receives 4G signals with a working frequency Band of Band1, and the signals are transmitted to the RFC pin of the first switch 221 after passing through the fourth frequency divider 240, so that the 4G signals of Band1 are input from the RFC pin, output from the RF1 pin, filtered by the first filter 222, and finally transmitted to the intermediate frequency transceiver 210 for corresponding processing.

When transmitting signals, the intermediate frequency transceiver transmits the 4G signals of Band1 to be output to the first filter 222 for filtering, the filtered 4G signals of Band1 are input through the RF1 pin of the first switch 221 and output through the RFC pin to the fourth frequency divider 240, and the fourth frequency divider 240 outputs the 4G signals of Band1 to be transmitted through the second antenna 420.

When transmitting a signal, the if transceiver 210 transmits a 4G signal of Band1 to be output from the TX0 pin to the first communication module 100, and the first communication module 100 amplifies the 4G signal of Band1 and transmits the amplified signal to the first antenna 410 for transmission.

2. When the handset operates in 5G SA mode, for example, in the operating frequency band N79, the second antenna 420 serves as a diversity antenna to receive signals, the third antenna 430 serves as a main set antenna to transmit signals, and the fourth antenna 440 and the fifth antenna 450 serve as 5G receiving antennas to receive signals:

when the mobile phone is turned on, the working frequency band of the registered network is N79, the intermediate frequency transceiver 210 outputs a high-level BPI _ BUS2 signal and a high-level BPI _ BUS3 signal, the first group of switching signals (the BPI _ BUS0 signal and the BPI _ BUS1 signal) are not output, and the RFC pin of the second switch 231 is connected with the RF3 pin at this time.

When receiving the signal, the second antenna 420 receives the 5G signal with the working frequency band of N79, and transmits the signal to the RFC pin of the second switch 231 after passing through the fourth frequency divider 240, so that the 5G signal of N79 is input from the RFC pin, output from the RF3 pin, filtered by the sixth filter 234, and finally transmitted to the if transceiver 210 for corresponding processing.

In a specific implementation, other antennas may be used to receive the signal, and the corresponding antenna and its transmission path may be used to implement the reception path of the signal actually received by the antenna. For example, both the fourth antenna 440 and the fifth antenna 450 can be used for receiving, the second frequency divider 340 transmits the 5G signal of N79 received by the fourth antenna 440 to the second-band power amplifier unit 320, or the third frequency divider 350 transmits the 5G signal of N79 received by the fifth antenna 450 to the second-band power amplifier unit 320, and the signal is amplified by the second-band power amplifier unit 320 and then transmitted to the TX2 pin of the if transceiver 210, so that the if transceiver 210 performs corresponding processing.

When transmitting a signal, the if transceiver 210 transmits a 5G signal of N79 to be output from the TX2 pin to the second band power amplifier unit 320, and the second band power amplifier unit 320 amplifies the signal and transmits the amplified signal to the second frequency divider 340, and finally transmits the amplified signal to the fourth antenna 440 for transmission. Or, the second frequency band power amplifier unit 320 amplifies the signal and transmits the amplified signal to the third frequency divider 350, and finally transmits the amplified signal to the fifth antenna 450 for transmission.

3. When the mobile phone operates in the 5G NSA mode, 4G and 5G operate simultaneously, the operating frequency bands are Band5 and N41, the second antenna 420 serves as a diversity antenna for 4G and 5G to receive signals (can receive 4G signals and 5G signals simultaneously, and is separated by the fourth frequency divider 240), the first antenna serves as a main set antenna for 4G to transmit signals, and the third antenna 430 serves as a transmitting antenna for 5G; the fourth antenna 440 and the fifth antenna 450 both function as 5G receiving antennas and receive only 5G signals.

When the mobile phone is turned on, the working frequency ranges of the registered network are Band5 and N41, the intermediate frequency transceiver 210 outputs a high-level BPI _ BUS0 signal and a low-level BPI _ BUS1 signal, and controls the RFC pin of the first switch 221 to be connected with the RF2 pin; the low-level BPI _ BUS2 signal and the high-level BPI _ BUS3 signal are also output to control the RFC pin of the second switch 231 to connect the RF1 pin.

When receiving signals, the second antenna 420 receives a 4G signal with a Band5 working frequency Band and a 5G signal with an N41 working frequency Band at the same time, and then the signals are divided into two paths of signals by the fourth frequency divider 240, so that the effect of multiplexing one antenna (i.e., the second antenna 420) is achieved. One path of signal is a 4G signal of Band5, and is transmitted to an RFC pin of the first switch 221; the other path is the 5G signal of N41, which is transmitted to the RFC leg of the second switch 231. The 4G signal of Band5 is transmitted to the second filter 223 through the first switch 221 for filtering, and finally transmitted to the if transceiver 210 for processing. The 5G signal of N41 is transmitted to the fourth filter 232 through the second switch 231 for filtering, and finally transmitted to the if transceiver 210 for processing.

In practice, it is also possible to use. For example, the fourth antenna 440 receives the 5G signal of N41, and transmits the signal to the first frequency band power amplifier unit 310 through the second frequency divider 340, and then transmits the signal to the TX1 pin of the if transceiver 210, i.e., transmits the signal to the if transceiver 210 for corresponding processing.

When transmitting signals, the if transceiver 210 transmits the Band5 4G signals to be output from the TX0 port to the first communication module 100, and the first communication module 100 amplifies the Band5 4G signals and transmits the amplified signals to the first antenna 410 for transmission. Meanwhile, the if transceiver 210 transmits the N41 5G signal to be output from the TX1 pin to the first band power amplifier unit 310, and the first band power amplifier unit 310 amplifies the signal and transmits the amplified signal to the first frequency divider 330, and finally transmits the amplified signal to the third antenna 420 for transmission.

This has minimal impact on handset conducted performance since the second antenna 420 is used as a diversity antenna for the 4G mode when receiving. In this embodiment, one antenna is mainly multiplexed, and two antennas may also be multiplexed, and the number of the antennas in this scheme only needs 4.

To sum up, the mobile terminal with multiplexing antennas of the utility model reduces the total number of antennas of a 5G mobile phone to 5 by redesigning a radio frequency circuit and multiplexing 4G and 5G antennas, thereby meeting the necessary design of 4G dual-antenna and 5G four-antenna, saving the space of one antenna and reserving the space for other antennas, and effectively improving the overall performance of the antenna; and the frequency band combination requirements of a 4G mode, a 5G SA mode and a 5G NSA mode are met.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A mobile terminal with antenna multiplexing comprises a mainboard, and is characterized in that a first communication module, a receiving module, a second communication module and an antenna module are arranged on the mainboard; the first communication module, the receiving module and the second communication module are all connected with the antenna module, and the receiving module is connected with the first communication module and the second communication module;

the antenna module is used for transceiving a first signal and a second signal,

2. The antenna-multiplexed mobile terminal of claim 1, wherein the antenna module comprises a first antenna, a second antenna, a third antenna, a fourth antenna, and a fifth antenna; the first antenna is connected with the first communication module, and the second antenna is connected with the receiving module; the third antenna, the fourth antenna and the fifth antenna are all connected with the second communication module.

3. The antenna multiplexing mobile terminal according to claim 2, wherein the second communication module comprises a first frequency band power amplifier unit, a second frequency band power amplifier unit, a first frequency divider, a second frequency divider and a third frequency divider; the first frequency band power amplification unit is connected with the first frequency divider, the second frequency divider, the third frequency divider and the receiving module; the second frequency band power amplifier unit is connected with the first frequency divider, the second frequency divider, the third frequency divider and the receiving module; the first frequency divider is connected with the third antenna, the second frequency divider is connected with the fourth antenna, and the third frequency divider is connected with the fifth antenna;

4. The antenna-multiplexed mobile terminal according to claim 2, wherein the receiving module comprises a medium frequency transceiver, a first pass unit, a second pass unit, and a fourth frequency divider; the intermediate frequency transceiver is connected with the first access unit and the second access unit; the fourth frequency divider is connected with the first access unit, the second access unit and the second antenna; the intermediate frequency transceiver is connected with the first communication module, the first frequency band power amplification unit and the second frequency band power amplification unit;

5. The antenna-multiplexed mobile terminal of claim 4, wherein the first pass unit comprises a first switch, a first filter, a second filter, and a third filter;

6. The antenna-multiplexed mobile terminal of claim 4, wherein the second pass unit comprises a second switch, a fourth filter, a fifth filter, and a sixth filter;

7. The antenna multiplexing mobile terminal of claim 4, wherein the pin TX0 of the IF transceiver is connected to the signal input pin of the first communication module, the pin TX1 of the IF transceiver is connected to the signal input pin of the first band power amplifier unit, and the pin TX2 of the IF transceiver is connected to the signal input pin of the second band power amplifier unit.

8. The antenna-multiplexed mobile terminal of claim 3, wherein the first signal is a 4G signal, and the operating frequency bands include Band1, Band5, and Band 8; the second signal is a 5G signal, and the working frequency band comprises N41, N77, N78 and N79.

9. The antenna multiplexing mobile terminal according to claim 2, wherein when the operation mode is a 4G mode, the first antenna is used for transmitting signals, and the second antenna is used for receiving signals;