CN112865833A

CN112865833A - Wireless communication circuit and device

Info

Publication number: CN112865833A
Application number: CN202110236700.0A
Authority: CN
Inventors: 丁哲壮; 马英兴; 谢广付; 祝实; 杨爽; 唐海波; 陈丛静
Original assignee: Dalian Gongjin Technology Co ltd
Current assignee: Dalian Gongjin Technology Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-05-28

Abstract

The invention provides a wireless communication circuit and a wireless communication device. The wireless communication circuit comprises a baseband controller, a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency component, a second radio frequency component, a first antenna, a second antenna, a third antenna, a fourth antenna, at least one fifth antenna and a WiFi controller; the first radio frequency assembly comprises at least four different radio frequency paths, and the second radio frequency assembly comprises at least four different radio frequency paths; the first radio frequency transceiver, the second radio frequency transceiver and the WiFi controller are respectively connected with the baseband controller; the first radio frequency assembly is electrically connected with the first antenna, the second antenna and the first radio frequency transceiver; the second radio frequency assembly is electrically connected with the third antenna, the fourth antenna and the second radio frequency transceiver; the WiFi controller is electrically connected with each fifth antenna. The wireless communication circuit and the wireless communication device can simultaneously meet the requirements of WiFi (wireless fidelity), LTE (long term evolution) at high speed of a user and support of various frequency bands.

Description

Wireless communication circuit and device

Technical Field

The present invention relates to the field of communications, and in particular, to a wireless communication circuit and a wireless communication device.

Background

LTE (Long Term Evolution) and WiFi (Wireless Fidelity) are two widely used Wireless communication methods. At present, an LTE base station and a WiFi router are generally two products, and a customer needs to purchase the two products and deploy the two products at the same time.

In general, LTE only supports 20Mhz at maximum, has a low communication rate, and only supports one frequency band, and cannot simultaneously meet the requirements of a user on WiFi, high-rate LTE, and multiple frequency bands. Therefore, how to simultaneously satisfy the requirements of the user of WiFi, high-speed LTE and support of multiple frequency bands is an urgent problem to be solved.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a wireless communication circuit and apparatus for overcoming the problem in the prior art that the requirements of users for WiFi, high-rate LTE and supporting multiple frequency bands cannot be satisfied simultaneously.

The invention provides the following technical scheme:

in a first aspect, an embodiment of the present invention provides a wireless communication circuit, where the wireless communication circuit includes a baseband controller, a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency component, a second radio frequency component, a first antenna, a second antenna, a third antenna, a fourth antenna, at least one fifth antenna, and a WiFi controller; the first radio frequency assembly comprises at least four different radio frequency paths, and the second radio frequency assembly comprises at least four different radio frequency paths; the first radio frequency transceiver, the second radio frequency transceiver and the WiFi controller are respectively electrically connected with the baseband controller; the first radio frequency assembly is electrically connected with the first antenna, the second antenna and the first radio frequency transceiver; the second radio frequency assembly is electrically connected with the third antenna, the fourth antenna and the second radio frequency transceiver; the WiFi controller is electrically connected with each fifth antenna.

In an alternative embodiment, the TXD AC0 pin of the baseband controller is connected to the BB _ TX1 pin of the first radio frequency transceiver; the BB RX0 pin of the baseband controller is connected with the BB RX1 pin of the first radio frequency transceiver; the TXD AC1 pin of the baseband controller is connected with the BB _ TX2 pin of the first radio frequency transceiver; the BB RX1 pin of the baseband controller is connected with the BB RX2 pin of the first radio frequency transceiver; the TXD AC2 pin of the baseband controller is connected with the BB _ TX1 pin of the second radio frequency transceiver; the BB RX2 pin of the baseband controller is connected with the BB RX1 pin of the second radio frequency transceiver; the TXD AC3 pin of the baseband controller is connected with the BB _ TX2 pin of the second radio frequency transceiver; the BB RX3 pin of the baseband controller is connected with the BB RX2 pin of the second radio frequency transceiver; the BB RX5 pin of the baseband controller is connected with the BB RXNL pin of the second radio frequency transceiver; and a PCIE pin of the baseband controller is connected with the WiFi controller.

In an alternative embodiment, the first radio frequency assembly comprises a first radio frequency path for transmitting a first radio frequency signal, a second radio frequency path for receiving the first radio frequency signal, a third radio frequency path for receiving a second radio frequency signal or a third radio frequency signal, and a fourth radio frequency path for transmitting the second radio frequency signal or the third radio frequency signal; the first radio frequency path is connected with an RX1_ LB pin of the first radio frequency transceiver and comprises a first radio frequency switch, a first filter, a second radio frequency switch and a first duplexer; the first antenna is connected with a first connection end of the first radio frequency switch, the second antenna is connected with a second connection end of the first radio frequency switch, a common end of the first radio frequency switch is connected with a first connection end of the first filter, a second connection end of the first filter is connected with a common end of the second radio frequency switch, a first connection end of the second radio frequency switch is connected with a first connection end of the first duplexer, and a second connection end of the first duplexer is connected with an RX1_ LB pin of the first radio frequency transceiver; the second radio frequency path is connected with a TX1_ LB pin of the first radio frequency transceiver and comprises a first power amplifier, a first coupler, a first duplexer, a second radio frequency switch, a first filter and a first radio frequency switch; a TX1_ LB pin of the first radio frequency transceiver is connected to an input terminal of the first power amplifier, an output terminal of the first power amplifier is connected to an input terminal of the first coupler, a first output terminal of the first coupler is connected to a third connection terminal of the first duplexer, a first connection terminal of the first duplexer is connected to a first connection terminal of the second radio frequency switch, a common terminal of the second radio frequency switch is connected to a second connection terminal of the first filter, the first connection terminal of the first filter is connected to the common terminal of the first radio frequency switch, the first connection terminal of the first radio frequency switch is connected to the first antenna, and the second connection terminal of the first radio frequency switch is connected to the second antenna; the third radio frequency path is connected with a TX1_ MB pin of the first radio frequency transceiver, and comprises a second power amplifier, a second coupler, a second duplexer, the second radio frequency switch, the first filter and the first radio frequency switch; a TX1_ MB pin of the first radio frequency transceiver is connected with an input end of the second power amplifier, an output end of the second power amplifier is connected with an input end of the second coupler, a first output end of the second coupler is connected with a first connecting end of the second duplexer, a second connecting end of the second duplexer is connected with a second connecting end of the second radio frequency switch, a common end of the second radio frequency switch is connected with a second connecting end of the first filter, a first connecting end of the first filter is connected with a common end of the first radio frequency switch, a first connecting end of the first radio frequency switch is connected with the first antenna, and a second connecting end of the first radio frequency switch is connected with the second antenna; the fourth radio frequency path is connected with an RX1_ MB pin of the first radio frequency transceiver and comprises the first radio frequency switch, the first filter, the second radio frequency switch and the second duplexer; the first antenna is connected with a first connection end of the first radio frequency switch, the second antenna is connected with a second connection end of the first radio frequency switch, a common end of the first radio frequency switch is connected with a first connection end of the first filter, a second connection end of the first filter is connected with a common end of the second radio frequency switch, a second connection end of the second radio frequency switch is connected with a second connection end of the second duplexer, and a third connection end of the second duplexer is connected with an RX1_ MB pin of the first radio frequency transceiver; the first radio frequency switch is used for selecting the first antenna or the second antenna to transceive signals; the second radio frequency switch is used for selecting the type of the received or transmitted radio frequency signal.

In an optional embodiment, the first rf component further includes a third rf switch, and the first rf component is connected to the DPD/PDET1 pin of the first rf transceiver; the first connection end of the third radio frequency switch is connected with the second output end of the first coupler, the second connection end of the third radio frequency switch is connected with the second output end of the second coupler, and the common end of the third radio frequency switch is connected with a DPD/PDET1 pin of the first radio frequency transceiver.

In an alternative embodiment, the fifth rf path is connected to a TX1_ UHB pin of the second rf transceiver, and includes a third power amplifier, a third coupler, a fourth rf switch, and a second filter; a TX1_ UHB pin of the second radio frequency transceiver is connected with an input end of the third power amplifier, an output end of the third power amplifier is connected with a first connection end of the third coupler, a second connection end of the third coupler is connected with a first connection end of the fourth radio frequency switch, a common end of the fourth radio frequency switch is connected with a first connection end of the second filter, and a second connection end of the second filter is connected with the third antenna; the sixth radio frequency path is connected with an RX1_ UHB pin of the second radio frequency transceiver, and the sixth radio frequency path comprises the second filter, the fourth radio frequency switch and a third filter; the third antenna is connected with a second connection end of the second filter, a first connection end of the second filter is connected with a common end of the fourth radio frequency switch, a second connection end of the fourth radio frequency switch is connected with a first connection end of the third filter, and a second connection end of the third filter is connected with an RX1_ UHB pin of the second radio frequency transceiver; the seventh radio frequency path is connected with a TX2_ UHB pin of the second radio frequency transceiver, and comprises a fourth power amplifier, a fourth coupler, a fifth radio frequency switch and a fourth filter; a TX2_ UHB pin of the second radio frequency component is connected to an input end of the fourth power amplifier, an output end of the fourth power amplifier is connected to a first connection end of the fourth coupler, a second connection end of the fourth coupler is connected to a first connection end of the fifth radio frequency switch, a common end of the fifth radio frequency switch is connected to a first connection end of the fourth filter, and a second connection end of the fourth filter is connected to the fourth antenna; the second radio frequency component is connected to an RX2_ UHB pin of the second radio frequency transceiver, and the eighth radio frequency path includes the fourth filter, the fifth radio frequency switch, and a fifth filter; the fourth antenna is connected with the second connection end of the fourth filter, the first connection end of the fourth filter is connected with the common end of the fifth radio frequency switch, the second connection end of the fifth radio frequency switch is connected with the first connection end of the fifth filter, and the second connection end of the fifth filter is connected with an RX2_ UHB pin of the second radio frequency transceiver; the fourth radio frequency switch is used for controlling the receiving and sending of radio frequency signals between the second radio frequency transceiver and the third antenna; the fifth radio frequency switch is used for controlling the receiving and sending of radio frequency signals between the second radio frequency transceiver and the fourth antenna.

In an optional embodiment, the second rf device is electrically connected to both the DPD/PDET1 pin of the second rf transceiver and the DPD/PDET2 pin of the second rf transceiver.

In an alternative embodiment, the wireless communication circuit further comprises a quartz crystal oscillator, a frequency divider circuit, and a GPS receiver; an RF pin of the GPS receiver is connected with a GPS pin of the baseband controller; the quartz crystal oscillator is connected with a CLK pin of the baseband controller, a CLK pin of the GPS receiver and a CLK pin of the first radio frequency transceiver through the frequency dividing circuit, and the frequency dividing circuit is used for respectively providing a first clock signal for the baseband controller, the GPS receiver and the first radio frequency transceiver; the quartz crystal oscillator is connected with the second radio frequency transceiver and used for providing a second clock signal for the second radio frequency transceiver, and the second clock signal is twice as large as the first clock signal.

In an optional implementation manner, a radio frequency front end module is disposed between the WiFi controller and each of the fifth antennas.

In an optional embodiment, the DDR3 EBI0 pin of the baseband controller is connected with a double data rate memory; and the SDCC1 pin of the baseband controller is connected with a Flash memory.

In a second aspect, an embodiment of the present invention further provides a wireless communication apparatus, including the wireless communication circuit according to the first aspect.

The embodiment of the invention has the following advantages:

the embodiment of the invention provides a wireless communication circuit, wherein the wireless communication circuit comprises a baseband controller, a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency component, a second radio frequency component, a first antenna, a second antenna, a third antenna, a fourth antenna, at least one fifth antenna and a WiFi controller; the first radio frequency assembly comprises at least four different radio frequency paths, and the second radio frequency assembly comprises at least four different radio frequency paths; the first radio frequency transceiver, the second radio frequency transceiver and the WiFi controller are respectively electrically connected with the baseband controller; the first radio frequency assembly is electrically connected with the first antenna, the second antenna and the first radio frequency transceiver; the second radio frequency assembly is electrically connected with the third antenna, the fourth antenna and the second radio frequency transceiver; the WiFi controller is electrically connected with each fifth antenna. The technical effects of simultaneously supporting the receiving and sending of LTE signals and WiFi signals and reducing the cost are achieved through one baseband controller; the technical effect that the wireless communication circuit simultaneously supports multiple frequency bands is achieved through at least four different radio frequency paths in the first radio frequency assembly and at least four different radio frequency paths in the second radio frequency assembly; the authorization auxiliary access function of the wireless communication circuit is realized through the WiFi controller, the baseband controller, the second radio frequency transceiver and the second radio frequency assembly, and then the technical effect of the high-rate LTE is realized.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram illustrating a wireless communication circuit according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another wireless communication circuit provided in an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a connection structure between a first rf component and a first rf transceiver in a wireless communication circuit according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a connection structure between a second rf component and a second rf transceiver in a wireless communication circuit according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram illustrating a connection structure of a power supply circuit inside a power supply device in a wireless communication circuit according to an embodiment of the present application.

Description of the main element symbols:

1000-wireless communication circuitry; 100-baseband controller; 200-a first radio frequency component; 250-a first antenna; 350-a second antenna; 450-a third antenna; 550-a fourth antenna; 203-a first radio frequency switch; 204-a first filter; 205-a second radio frequency switch; 206-a first duplexer; 207-a first coupler; 208-a first power amplifier; 209-a second diplexer; 210-a second coupler; 211-a second power amplifier; 212-a third radio frequency switch; 300-a second radio frequency component; 302-a second filter; 303-a fourth radio frequency switch; 304-a third coupler; 305-a third power amplifier; 306-a third filter; 307-a fourth power amplifier; 308-a fourth coupler; 309-a fifth radio frequency switch; 310-a fourth filter; 312-a fifth filter; 400-a first radio frequency transceiver; 500-a second radio frequency transceiver; 600-a WiFi controller; 650-a fifth antenna; 700-a radio frequency front end module; 750-quartz crystal oscillator; 800-a frequency divider circuit; 850-GPS receiver; 900-double data rate memory; 950-Flash memory; 970-a power supply device; 971-power adapter; 972-first controller; 973-a second controller; 974-third controller.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wireless communication circuit according to an embodiment of the present disclosure.

The wireless communication circuit 1000 includes a baseband controller 100, a first radio frequency transceiver 400, a second radio frequency transceiver 500, a first radio frequency component 200, a second radio frequency component 300, a first antenna 250, a second antenna 350, a third antenna 450, a fourth antenna 550, at least one fifth antenna 650, and a WiFi controller 600; the first rf component 200 includes at least four different rf paths, and the second rf component 300 includes at least four different rf paths; the first rf transceiver 400, the second rf transceiver 500 and the WiFi controller 600 are electrically connected to the baseband controller 100 respectively; the first rf component 200 is electrically connected to the first antenna 250, the second antenna 350, and the first rf transceiver 400; the second rf component 300 is electrically connected to the third antenna 450, the fourth antenna 550 and the second rf transceiver 500; the WiFi controller 600 is electrically connected to each of the fifth antennas 650.

Specifically, the wireless communication circuit includes at least one fifth antenna 650, and the specific number of the fifth antennas 650 can be set according to actual needs, in this embodiment, three fifth antennas 650 are taken as an example. It is noted that the performance is reduced for each reduced one of the fifth antennas 650.

Preferably, the baseband controller 100 is a FSM9955 chip, the first radio frequency transceiver 400 is an FTR8900 chip, the second radio frequency transceiver 500 is an FTR89500 chip, and the WiFi controller is a QCA9880 chip.

In the embodiment, the receiving and sending of the LTE signal and the WiFi signal are simultaneously supported by one baseband controller, so that the technical effect of reducing the cost is achieved; the technical effect that the wireless communication circuit simultaneously supports multiple frequency bands is achieved through at least four different radio frequency paths in the first radio frequency assembly and at least four different radio frequency paths in the second radio frequency assembly; the authorization auxiliary access function of the wireless communication circuit is realized through the WiFi controller, the baseband controller, the second radio frequency transceiver and the second radio frequency assembly, and then the technical effect of the high-rate LTE is realized.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another wireless communication circuit according to an embodiment of the present disclosure.

In an alternative embodiment, the TXD AC0 pin of the baseband controller 100 is connected to the BB _ TX1 pin of the first radio frequency transceiver 400; the BB RX0 pin of the baseband controller 100 is connected with the BB RX1 pin of the first radio frequency transceiver 400; the TXD AC1 pin of the baseband controller 100 is connected with the BB _ TX2 pin of the first radio frequency transceiver 400; the BB RX1 pin of the baseband controller 100 is connected with the BB RX2 pin of the first radio frequency transceiver 400; the TXD AC2 pin of the baseband controller 100 is connected with the BB _ TX1 pin of the second radio frequency transceiver 500; the BB RX2 pin of the baseband controller 100 is connected with the BB RX1 pin of the second RF transceiver 500; the TXD AC3 pin of the baseband controller 100 is connected with the BB _ TX2 pin of the second radio frequency transceiver 500; the BB RX3 pin of the baseband controller 100 is connected with the BB RX2 pin of the second RF transceiver 500; the BB RX5 pin of the baseband controller 100 is connected to the BB RXNL pin of the second radio frequency transceiver 500; the PCIE pin of the baseband controller 100 is connected to the WiFi controller 600.

In an alternative embodiment, the wireless communication circuit 1000 further comprises a quartz crystal oscillator 750, a frequency divider circuit 800, and a GPS receiver 850; an RF pin of the GPS receiver 850 is connected to a GPS pin of the baseband controller 100; the quartz crystal oscillator 750 is electrically connected to the CLK pin of the baseband controller 100, the CLK pin of the GPS receiver 850, and the CLK pin of the first rf transceiver 400 through the frequency dividing circuit 800, and the frequency dividing circuit 800 is configured to provide a first clock signal to the baseband controller 100, the GPS receiver 850, and the first rf transceiver 400, respectively; the quartz crystal oscillator 750 is connected to the second rf transceiver 500, and the quartz crystal oscillator 750 is configured to provide a second clock signal to the second rf transceiver 500, where the second clock signal is twice the first clock signal.

Specifically, the crystal Oscillator 750 is a Voltage-controlled Temperature Compensated crystal Oscillator (VCTCXO) with a frequency of 38.4mhz, and the vcxo provides a second clock signal with a frequency of 38.4mhz for the second rf transceiver 500. The frequency dividing circuit 800 is a 74LVC1G80 chip, and the 74LVC1G80 chip divides the frequency of 38.4mhz into a first clock signal of 19.2mhz, so that the quartz crystal oscillator 750 provides the first clock signal of 19.2mhz for the baseband controller 100, the GPS receiver 850, and the first rf transceiver 400 through the frequency dividing circuit. The GPS receiver 850 achieves synchronization of the baseband controller 100 with satellite time.

Specifically, the RF Front-end module 700 (FEM) is a highly integrated RF device that integrates a PA (Power Amplifier), an LNA (Low Noise Amplifier), and an RF switch into one chip. The rf front-end module 700 has the advantages of improving the integration level and reducing the cost, and has the functions of PA and LNA.

In an alternative embodiment, the DDR3 EBI0 pin of the baseband controller 100 is connected to the double data rate memory 900; the SDCC1 pin of the baseband controller 100 is connected to the Flash memory 950.

In an alternative embodiment, the MTP PWR pin of the baseband controller 100, the PWR pin of the first rf transceiver 400, and the PWR pin of the second rf transceiver 500 are respectively connected to a power supply device 970, and the power supply device 970 is configured to provide power to the baseband controller 100, the first rf transceiver 400, and the second rf transceiver 500.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating a connection structure between a first rf component and a first rf transceiver in a wireless communication circuit according to an embodiment of the present disclosure.

In an alternative embodiment, the first rf component 200 includes a first rf path for transmitting a first rf signal, a second rf path for receiving the first rf signal, a third rf path for receiving a second rf signal or a third rf signal, and a fourth rf path for transmitting the second rf signal or the third rf signal.

The first rf path is connected to the RX1_ LB pin of the first rf transceiver 400, and includes a first rf switch 203, a first filter 204, a second rf switch 205, and a first duplexer 206; the first antenna 250 is connected to the first connection end of the first rf switch 203, the second antenna 350 is connected to the second connection end of the first rf switch 203, the common end of the first rf switch 203 is connected to the first connection end of the first filter 204, the second connection end of the first filter 204 is connected to the common end of the second rf switch 205, the first connection end of the second rf switch 205 is connected to the first connection end of the first duplexer 206, and the second connection end of the first duplexer 206 is connected to the RX1_ LB pin of the first rf transceiver 400.

The second rf path is connected to the TX1_ LB pin of the first rf transceiver 400, and includes the first power amplifier 208, the first coupler 207, the first duplexer 206, the second rf switch 205, the first filter 204, and the first rf switch 203; the TX1_ LB pin of the first rf transceiver 400 is connected to the input terminal of the first power amplifier, the output terminal of the first power amplifier 208 is connected to the input terminal of the first coupler 207, the first output terminal of the first coupler 207 is connected to the third connection terminal of the first duplexer 206, the first connection terminal of the first duplexer 206 is connected to the first connection terminal of the second rf switch 205, the common terminal of the second rf switch 205 is connected to the second connection terminal of the first filter 204, the first connection terminal of the first filter 204 is connected to the common terminal of the first rf switch 203, the first connection terminal of the first rf switch 203 is connected to the first antenna 250, and the second connection terminal of the first rf switch 203 is connected to the second antenna 350.

The third rf path is connected to the TX1_ MB pin of the first rf transceiver 400, and includes the second power amplifier 211, the second coupler 210, the second duplexer 209, the second rf switch 205, the first filter 204, and the first rf switch 203; the TX1_ MB pin of the first rf transceiver 400 is connected to the input terminal of the second power amplifier 211, the output terminal of the second power amplifier 211 is connected to the input terminal of the second coupler 210, the first output terminal of the second coupler 210 is connected to the first connection terminal of the second duplexer 209, the second connection terminal of the second duplexer 209 is connected to the second connection terminal of the second rf switch 205, the common terminal of the second rf switch 205 is connected to the second connection terminal of the first filter 204, the first connection terminal of the first filter 204 is connected to the common terminal of the first rf switch 203, the first connection terminal of the first rf switch 203 is connected to the first antenna 250, and the second connection terminal of the first rf switch 203 is connected to the second antenna 350.

The fourth rf path is connected to the RX1_ MB pin of the first rf transceiver 400, and includes the first rf switch 203, the first filter 204, the second rf switch 205, and the second duplexer 209; the first antenna 250 is connected to the first connection terminal of the first rf switch 203, the second antenna 350 is connected to the second connection terminal of the first rf switch 203, the common terminal of the first rf switch 203 is connected to the first connection terminal of the first filter 204, the second connection terminal of the first filter 204 is connected to the common terminal of the second rf switch 205, and the second connection terminal of the second rf switch 205 is connected to the second connection terminal of the second duplexer 209; the third connection terminal of the second duplexer 209 is connected to the RX1_ MB pin of the first rf transceiver 400.

The first rf switch 203 is used for selecting the second antenna 350 or the first antenna 250 to transceive signals; the second rf switch 205 is used to select the type of rf signal to be received or transmitted.

Specifically, the first antenna 250 may be an internal antenna, and the second antenna 350 may be an external antenna; the first antenna 250 and the second antenna 350 may be both built-in antennas; the first antenna 250 and the second antenna 350 may be external antennas. The first antenna 250 and the second antenna 350 can be set according to actual needs.

Preferably, the first radio frequency signal is band 13 (frequency band 13), the second radio frequency signal is band 4, and the third radio frequency signal is band 66. Because band 4 and band 66 are coincident in frequency, i.e., band 66 includes band 4, the rf paths of band 4 and band 66 can be shared.

In an alternative embodiment, the first rf assembly 200 further includes a third rf switch 212, and the first rf assembly 200 is connected to the DPD/PDET1 pin of the first rf transceiver 400; a first connection end of the third rf switch 212 is connected to the second output end of the first coupler 207, a second connection end of the third rf switch 212 is connected to the second output end of the second coupler 210, and a common end of the third rf switch 212 is connected to the DPD/PDET1 pin of the first rf transceiver 400.

Specifically, the first coupler 207 and the second coupler 210 both output a radio frequency signal, and the third radio frequency switch 212 is configured to select a radio frequency signal for Digital Pre-Distortion (DPD) processing. The first connection end of the third rf switch 212 is connected to the second output end of the first coupler 207, the second connection end of the third rf switch 212 is connected to the second output end of the second coupler 210, and the common end of the third rf switch 212 is connected to the DPD/PDET1 pin of the first rf transceiver 400, so that the rf signals output by the first coupler 207 and the rf signals output by the second coupler 210 can both achieve the technical effect of digital predistortion processing.

In this embodiment, the baseband controller 100 controls the first rf component 200 to output different rf signals, that is, the baseband controller 100 controls the first rf component 200, so that the first antenna 250 receives any one of the first rf signal, the second rf signal, and the third rf signal, or the second antenna 350 sends any one of the first rf signal, the second rf signal, and the third rf signal, thereby achieving a technical effect that the wireless communication circuit supports multiple frequency bands simultaneously.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a connection structure between a second rf component and a second rf transceiver in a wireless communication circuit according to an embodiment of the present disclosure.

Specifically, the first coupler 207 and the second coupler 210 respectively output a radio frequency signal, and the third radio frequency switch 212 is configured to select a radio frequency signal for Digital Pre-Distortion (DPD) processing. The rf signal is transmitted to the DPD/PDET1 pin of the first rf transceiver 400, so as to achieve the technical effect of digital predistortion processing.

In an alternative embodiment, the second rf component 300 includes a fifth rf path and a seventh rf path for receiving a fourth rf signal, and a sixth rf path and an eighth rf path for transmitting the fourth rf signal.

The fifth rf path is connected to the TX1_ UHB pin of the second rf transceiver 500, and includes a third power amplifier 305, a third coupler 304, a fourth rf switch 303, and a second filter 302; the TX1_ UHB pin of the second rf transceiver 500 is connected to the input terminal of the third power amplifier 305, the output terminal of the third power amplifier 305 is connected to the first connection terminal of the third coupler 304, the second connection terminal of the third coupler 304 is connected to the first connection terminal of the fourth rf switch 303, the common terminal of the fourth rf switch 303 is connected to the first connection terminal of the second filter 302, and the second connection terminal of the second filter 302 is connected to the third antenna 450.

The sixth rf path is connected to RX1_ UHB pin of the second rf transceiver 500, and includes the second filter 302, the fourth rf switch 303, and the third filter 306; the third antenna 450 is connected to the second connection terminal of the second filter 302, the first connection terminal of the second filter 302 is connected to the common terminal of the fourth rf switch 303, the second connection terminal of the fourth rf switch 303 is connected to the first connection terminal of the third filter 306, and the second connection terminal of the third filter 306 is connected to the RX1_ UHB pin of the second rf transceiver 500.

The seventh rf path is connected to the TX2_ UHB pin of the second rf transceiver 500, and includes a fourth power amplifier 307, a fourth coupler 308, a fifth rf switch 309, and a fourth filter 310; a TX2_ UHB pin of the second rf transceiver 500 is connected to an input terminal of the fourth power amplifier 307, an output terminal of the fourth power amplifier 307 is connected to the first connection terminal of the fourth coupler 308, a second connection terminal of the fourth coupler 308 is connected to the first connection terminal of the fifth rf switch 309, a common terminal of the fifth rf switch 309 is connected to the first connection terminal of the fourth filter 310, and a second connection terminal of the fourth filter 310 is connected to the fourth antenna 550.

The eighth rf path is connected to an RX2_ UHB pin of the second rf transceiver 500, and includes the fourth filter 310, the fifth rf switch 309, and the fifth filter 312; the second rf component 300 is connected to an RX2_ UHB pin of the second rf transceiver 500, the fourth antenna 550 is connected to the second connection terminal of the fourth filter 310, the first connection terminal of the fourth filter 310 is connected to the common terminal of the fifth rf switch 309, the second connection terminal of the fifth rf switch 309 is connected to the first connection terminal of the fifth filter 312, and the second connection terminal of the fifth filter 312 is connected to an RX2_ UHB pin of the second rf transceiver 500.

The fourth rf switch 303 is configured to control the reception and transmission of rf signals between the second rf transceiver 500 and the third antenna 450; the fifth rf switch 309 is used for controlling the reception and transmission of rf signals between the second rf transceiver 500 and the fourth antenna 550.

In this embodiment, the fifth rf path and the seventh rf path are both configured to receive a fourth rf signal, and the sixth rf path and the eighth rf path are both configured to transmit the fourth rf signal. It will be appreciated that the number of rf paths for receiving or transmitting the fourth rf signal is typically an even number of two, four or more, and that performance may be degraded with one fewer rf path for receiving or transmitting.

Preferably, the fourth radio frequency signal is band 46.

In an alternative embodiment, the second rf device 300 is electrically connected to the DPD/PDET1 pin of the second rf transceiver 500 and the DPD/PDET2 pin of the second rf transceiver 500.

Specifically, the third coupler 304 outputs a radio frequency signal to the DPD/PDET1 pin of the second rf transceiver, and the fourth coupler 308 outputs a radio frequency signal to the DPD/PDET2 pin of the second rf transceiver, so as to achieve the technical effect of digital predistortion processing of the radio frequency signal.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating a connection structure of a power circuit inside a power device in a wireless communication circuit according to an embodiment of the present disclosure.

In an alternative embodiment, power device 970 includes a power adapter 971, a first controller 972, a second controller 973, and a third controller 974; the power adapter 971 is connected to a first connection end of the first controller 972, a second connection end of the first controller 972 is connected to the second controller 973, a third connection end of the first controller 972 is connected to the third controller 974, and the third controller 974 is electrically connected to the MTP PWR pin of the baseband controller 100, the PWR pin of the first rf transceiver 400, and the PWR pin of the second rf transceiver 500.

Preferably, the first controller 972 is an MP8770 chip, the second controller 973 is an MP8009 chip, and the third controller 974 is a PMF9900 chip. The Power device 970 may be powered by a Power adapter, or may be powered by Power Over Ethernet (POE).

The embodiment of the present invention provides a wireless communication circuit, wherein the wireless communication circuit includes a baseband controller 100, a first radio frequency transceiver 400, a second radio frequency transceiver 500, a first radio frequency component 200, a second radio frequency component 300, a second antenna 350, a first antenna 250, a third antenna 450, a fourth antenna 550, at least one fifth antenna 650, and a WiFi controller 600; the first rf component 200 includes at least four different rf paths, and the second rf component 300 includes at least four different rf paths; the first rf transceiver 400, the second rf transceiver 500 and the WiFi controller 600 are electrically connected to the baseband controller 100 respectively; the first rf component 200 is electrically connected to the second antenna 350, the first antenna 250 and the first rf transceiver 400; the second rf component 300 is electrically connected to the third antenna 450, the fourth antenna 550 and the second rf transceiver 500; the WiFi controller 600 is electrically connected to each of the fifth antennas 650. The technical effects of supporting the receiving and sending of the LTE signal and the WiFi signal at the same time and reducing the cost are achieved through one baseband controller 100; the technical effect that the wireless communication circuit simultaneously supports multiple frequency bands is achieved through at least four different radio frequency paths in the first radio frequency component 200 and at least four different radio frequency paths in the second radio frequency component 300; through the WiFi controller 600, the baseband controller 100, the second radio frequency transceiver 500 and the second radio frequency assembly 300, the authorized auxiliary access function of the wireless communication circuit is realized, and further, the technical effect of the high-rate LTE is realized.

Example 2

An embodiment of the present invention further provides a wireless communication device, including the wireless communication circuit described in embodiment 1 above.

The wireless communication device according to the embodiment of the present invention has the same technical features as the wireless communication circuit according to embodiment 1, and therefore, the same technical problems can be solved, and the same technical effects can be achieved.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the wireless communication circuit described above may refer to the corresponding process of the wireless communication circuit 1000 provided in embodiment 1, and is not described herein again.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. A wireless communication circuit is characterized by comprising a baseband controller, a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency component, a second radio frequency component, a first antenna, a second antenna, a third antenna, a fourth antenna, at least one fifth antenna and a WiFi controller;

the first radio frequency assembly comprises at least four different radio frequency paths, and the second radio frequency assembly comprises at least four different radio frequency paths;

the first radio frequency transceiver, the second radio frequency transceiver and the WiFi controller are respectively electrically connected with the baseband controller;

the first radio frequency assembly is electrically connected with the first antenna, the second antenna and the first radio frequency transceiver;

the second radio frequency assembly is electrically connected with the third antenna, the fourth antenna and the second radio frequency transceiver;

the WiFi controller is electrically connected with each fifth antenna.

2. The wireless communication circuit of claim 1, wherein the TXD AC0 pin of the baseband controller is connected to the BB _ TX1 pin of the first radio frequency transceiver;

the BB RX0 pin of the baseband controller is connected with the BB RX1 pin of the first radio frequency transceiver;

the TXD AC1 pin of the baseband controller is connected with the BB _ TX2 pin of the first radio frequency transceiver;

the BB RX1 pin of the baseband controller is connected with the BB RX2 pin of the first radio frequency transceiver;

the TXD AC2 pin of the baseband controller is connected with the BB _ TX1 pin of the second radio frequency transceiver;

the BB RX2 pin of the baseband controller is connected with the BB RX1 pin of the second radio frequency transceiver;

the TXD AC3 pin of the baseband controller is connected with the BB _ TX2 pin of the second radio frequency transceiver;

the BB RX3 pin of the baseband controller is connected with the BB RX2 pin of the second radio frequency transceiver;

the BB RX5 pin of the baseband controller is connected with the BB RXNL pin of the second radio frequency transceiver;

and a PCIE pin of the baseband controller is connected with the WiFi controller.

3. The wireless communication circuit of claim 1, wherein the first radio frequency component comprises a first radio frequency path for transmitting a first radio frequency signal, a second radio frequency path for receiving the first radio frequency signal, a third radio frequency path for receiving a second radio frequency signal or a third radio frequency signal, and a fourth radio frequency path for transmitting the second radio frequency signal or the third radio frequency signal;

the first radio frequency path is connected with an RX1_ LB pin of the first radio frequency transceiver and comprises a first radio frequency switch, a first filter, a second radio frequency switch and a first duplexer; the first antenna is connected with a first connection end of the first radio frequency switch, the second antenna is connected with a second connection end of the first radio frequency switch, a common end of the first radio frequency switch is connected with a first connection end of the first filter, a second connection end of the first filter is connected with a common end of the second radio frequency switch, a first connection end of the second radio frequency switch is connected with a first connection end of the first duplexer, and a second connection end of the first duplexer is connected with an RX1_ LB pin of the first radio frequency transceiver;

the second radio frequency path is connected with a TX1_ LB pin of the first radio frequency transceiver and comprises a first power amplifier, a first coupler, a first duplexer, a second radio frequency switch, a first filter and a first radio frequency switch; a TX1_ LB pin of the first radio frequency transceiver is connected to an input terminal of the first power amplifier, an output terminal of the first power amplifier is connected to an input terminal of the first coupler, a first output terminal of the first coupler is connected to a third connection terminal of the first duplexer, a first connection terminal of the first duplexer is connected to a first connection terminal of the second radio frequency switch, a common terminal of the second radio frequency switch is connected to a second connection terminal of the first filter, the first connection terminal of the first filter is connected to the common terminal of the first radio frequency switch, the first connection terminal of the first radio frequency switch is connected to the first antenna, and the second connection terminal of the first radio frequency switch is connected to the second antenna;

the third radio frequency path is connected with a TX1_ MB pin of the first radio frequency transceiver, and comprises a second power amplifier, a second coupler, a second duplexer, the second radio frequency switch, the first filter and the first radio frequency switch; a TX1_ MB pin of the first radio frequency transceiver is connected with an input end of the second power amplifier, an output end of the second power amplifier is connected with an input end of the second coupler, a first output end of the second coupler is connected with a first connecting end of the second duplexer, a second connecting end of the second duplexer is connected with a second connecting end of the second radio frequency switch, a common end of the second radio frequency switch is connected with a second connecting end of the first filter, a first connecting end of the first filter is connected with a common end of the first radio frequency switch, a first connecting end of the first radio frequency switch is connected with the first antenna, and a second connecting end of the first radio frequency switch is connected with the second antenna;

the fourth radio frequency path is connected with an RX1_ MB pin of the first radio frequency transceiver and comprises the first radio frequency switch, the first filter, the second radio frequency switch and the second duplexer; the first antenna is connected with a first connection end of the first radio frequency switch, the second antenna is connected with a second connection end of the first radio frequency switch, a common end of the first radio frequency switch is connected with a first connection end of the first filter, a second connection end of the first filter is connected with a common end of the second radio frequency switch, a second connection end of the second radio frequency switch is connected with a second connection end of the second duplexer, and a third connection end of the second duplexer is connected with an RX1_ MB pin of the first radio frequency transceiver;

the first radio frequency switch is used for selecting the first antenna or the second antenna to transceive signals;

the second radio frequency switch is used for selecting the type of the received or transmitted radio frequency signal.

4. The wireless communication circuit of claim 3, wherein the first RF component further comprises a third RF switch, and the first RF component is connected to the DPD/PDET1 pin of the first RF transceiver; the first connection end of the third radio frequency switch is connected with the second output end of the first coupler, the second connection end of the third radio frequency switch is connected with the second output end of the second coupler, and the common end of the third radio frequency switch is connected with a DPD/PDET1 pin of the first radio frequency transceiver.

5. The wireless communication circuit of claim 1, wherein the second radio frequency component comprises a fifth radio frequency path and a seventh radio frequency path for receiving a fourth radio frequency signal and a sixth radio frequency path and an eighth radio frequency path for transmitting the fourth radio frequency signal;

the fifth radio frequency path is connected with a TX1_ UHB pin of the second radio frequency transceiver, and the fifth radio frequency path comprises a third power amplifier, a third coupler, a fourth radio frequency switch and a second filter; a TX1_ UHB pin of the second radio frequency transceiver is connected with an input end of the third power amplifier, an output end of the third power amplifier is connected with a first connection end of the third coupler, a second connection end of the third coupler is connected with a first connection end of the fourth radio frequency switch, a common end of the fourth radio frequency switch is connected with a first connection end of the second filter, and a second connection end of the second filter is connected with the third antenna;

the sixth radio frequency path is connected with an RX1_ UHB pin of the second radio frequency transceiver, and the sixth radio frequency path comprises the second filter, the fourth radio frequency switch and a third filter; the third antenna is connected with a second connection end of the second filter, a first connection end of the second filter is connected with a common end of the fourth radio frequency switch, a second connection end of the fourth radio frequency switch is connected with a first connection end of the third filter, and a second connection end of the third filter is connected with an RX1_ UHB pin of the second radio frequency transceiver;

the seventh radio frequency path is connected with a TX2_ UHB pin of the second radio frequency transceiver, and comprises a fourth power amplifier, a fourth coupler, a fifth radio frequency switch and a fourth filter; a TX2_ UHB pin of the second radio frequency transceiver is connected to an input end of the fourth power amplifier, an output end of the fourth power amplifier is connected to a first connection end of the fourth coupler, a second connection end of the fourth coupler is connected to a first connection end of the fifth radio frequency switch, a common end of the fifth radio frequency switch is connected to a first connection end of the fourth filter, and a second connection end of the fourth filter is connected to the fourth antenna;

the eighth radio frequency path is connected with an RX2_ UHB pin of the second radio frequency transceiver, and the eighth radio frequency path comprises the fourth filter, the fifth radio frequency switch and a fifth filter; the fourth antenna is connected with the second connection end of the fourth filter, the first connection end of the fourth filter is connected with the common end of the fifth radio frequency switch, the second connection end of the fifth radio frequency switch is connected with the first connection end of the fifth filter, and the second connection end of the fifth filter is connected with an RX2_ UHB pin of the second radio frequency transceiver;

the fourth radio frequency switch is used for controlling the receiving and sending of radio frequency signals between the second radio frequency transceiver and the third antenna;

the fifth radio frequency switch is used for controlling the receiving and sending of radio frequency signals between the second radio frequency transceiver and the fourth antenna.

6. The wireless communication circuit of claim 5, wherein the second RF device is electrically connected to both the DPD/PDET1 pin of the second RF transceiver and the DPD/PDET2 pin of the second RF transceiver.

7. The wireless communication circuit of claim 1, further comprising a quartz crystal oscillator, a frequency divider circuit, and a GPS receiver;

an RF pin of the GPS receiver is connected with a GPS pin of the baseband controller;

the quartz crystal oscillator is connected with a CLK pin of the baseband controller, a CLK pin of the GPS receiver and a CLK pin of the first radio frequency transceiver through the frequency dividing circuit, and the frequency dividing circuit is used for respectively providing a first clock signal for the baseband controller, the GPS receiver and the first radio frequency transceiver;

the quartz crystal oscillator is connected with the second radio frequency transceiver and used for providing a second clock signal for the second radio frequency transceiver, and the second clock signal is twice as large as the first clock signal.

8. The wireless communication circuit of claim 1, wherein a radio frequency front end module is disposed between the WiFi controller and each of the fifth antennas.

9. The wireless communication circuit of claim 1, wherein DDR3 EBI0 pin of the baseband controller is connected to a double data rate memory;

and the SDCC1 pin of the baseband controller is connected with a Flash memory.

10. A wireless communication device comprising the wireless communication circuit of any one of claims 1-9.