CN218829922U

CN218829922U - Radio frequency module, radio frequency system and electronic equipment

Info

Publication number: CN218829922U
Application number: CN202222602802.2U
Authority: CN
Inventors: 张子炎
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-04-07
Anticipated expiration: 2032-09-28
Also published as: WO2024067028A1

Abstract

The embodiment of the application provides a radio frequency module, a radio frequency system and electronic equipment, relates to the field of antennas, and can reduce insertion loss in a radio frequency channel and improve the performance of the radio frequency module. The radio frequency module includes: a plurality of switches, a plurality of signal processing units, and a common port. The switch includes a signal output port and a plurality of signal input ports. The signal output port is connected to the common port. The common port is connected to an antenna. Different signal processing units are connected to different signal input ports. The switch is used for connecting or disconnecting the signal output port and any signal input port. A first switch of the plurality of switches receives a radio frequency signal of a first frequency band through a first signal processing unit. The second switch receives the radio frequency signal of the second frequency band through the second signal processing unit. The passband of the first signal processing unit and the stopband of the second signal processing unit cover a first frequency band. The stopband of the first signal processing unit and the passband of the second signal processing unit cover a second frequency band.

Description

Radio frequency module, radio frequency system and electronic equipment

Technical Field

The embodiment of the application relates to the field of antennas, in particular to a radio frequency module, a radio frequency system and electronic equipment.

Background

With the widespread application of Fifth Generation mobile communication (5G) technology, more and more electronic devices are generating the demand for multi-frequency and multi-mode. The multiple frequencies refer to multiple frequency bands, and the multiple modes refer to multiple network modes.

Because the number of the antennas in the electronic equipment is limited, in order to meet the requirements of the electronic equipment on multi-frequency and multi-mode, a combiner can be added in a radio frequency channel, so that radio frequency signals with different frequencies can share the antennas.

However, the combiner is a passive device, and a large insertion loss is introduced into the radio frequency path, and even when the radio frequency module does not need to combine radio frequency signals of different frequency bands, the insertion loss cost caused by the combiner still exists, which greatly affects the radio frequency performance of the radio frequency module.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a radio frequency module, a radio frequency system and electronic equipment, which can reduce the insertion loss in a radio frequency channel and improve the performance of the radio frequency module.

In order to achieve the above purpose, the following technical solutions are adopted in the embodiments of the present application.

In a first aspect, a radio frequency module is provided for transmitting or receiving radio frequency signals through an antenna. The radio frequency module includes: a plurality of switches, a plurality of signal processing units, and a common port. The switch includes a signal output port and a plurality of signal input ports. The signal output port is connected to the common port. The common port is connected to an antenna. Different signal processing units are connected to different signal input ports. The switch is used for connecting or disconnecting the signal output port and any signal input port. The signal processing unit is provided with a passband and a stopband, and allows the radio-frequency signals of the frequency band covered by the passband to pass through and prevents the radio-frequency signals of the frequency band covered by the stopband from passing through. The plurality of switches includes a first switch and a second switch. The first switch receives the radio frequency signal of the first frequency band through the first signal processing unit. The second switch receives the radio frequency signal of the second frequency band through the second signal processing unit. The passband of the first signal processing unit and the stopband of the second signal processing unit cover a first frequency band. The stopband of the first signal processing unit and the passband of the second signal processing unit cover a second frequency band. The first switch and the second switch are any two of the plurality of switches. The first signal processing unit is any signal processing unit connected with the first switch, and the second signal processing unit is any signal processing unit connected with the second switch. The first frequency band and the second frequency band are two different arbitrary frequency bands.

Based on the scheme, the first switch is connected, and the second switch is disconnected. The radio frequency signal is transmitted to the public port through the signal processing unit and the first switch in sequence; the second switch is connected, when the first switch is disconnected, the radio-frequency signals sequentially pass through the signal processing unit, and the second switch is transmitted to the public port. Because the radio frequency module does not comprise elements with larger insertion loss, such as a combiner and the like, the insertion loss in a radio frequency channel can be reduced, and the performance of the radio frequency module is improved.

As a possible design, the working states of the rf module include a single-pass state and a combined state. When the working state of the radio frequency module is a single on state, one or more switches are connected. The radio frequency signal is transmitted to the public port by the communicated switch and is transmitted to the antenna through the public port. When the working state of the radio frequency module is the combining state, at least two switches are communicated among the plurality of switches. The radio frequency signals are transmitted to the public port by the communicated switches, and are combined by the public port and then transmitted to the antenna. Based on the scheme, when the radio frequency module is in the single on state, the radio frequency signal is transmitted to the public port through the connected switch, and the radio frequency signal is not transmitted to other switches but transmitted to the antenna through the public port because other switches are in the off state. It can be seen that, when the rf module is in the single on state, the transmission path of the rf signal does not include the element with large insertion loss, and the loss of the rf signal is small, so the rf performance of the rf module is good. When the radio frequency module is in a combined state, each radio frequency signal is transmitted to the public port by each communicated switch. Taking the radio frequency signal of the first frequency band and the radio frequency signal of the second frequency band as an example, a path after the radio frequency signal is transmitted to the common port is described. The radio frequency signal of the first frequency band is transmitted to the public port and then divided into two parts, one part is transmitted to the antenna through the public port, and the other part is transmitted to other communicated switches, namely a second switch, through the public port. Since the stop band of the second signal processing unit connected to the second switch covers the first frequency band, the rf signal of the first frequency band cannot pass through the second signal processing unit, but is reflected to the common port by the second signal processing unit. Similarly, the part of the rf signal in the second frequency band transmitted to the first switch is also reflected to the common port by the first signal processing unit. It can be seen that, when the rf module is in the combined state, the transmission path of the rf signal does not include the element with large insertion loss, and the overall insertion loss of the rf module is small.

As a possible design, the signal output port and the common port are connected by a microstrip line. Based on this scheme, can improve the reliability of connecting, and be favorable to the miniaturization and the lightweight of radio frequency module.

As a possible design, the length of the microstrip line is less than or equal to a quarter wavelength. Based on the scheme, the insertion loss of the microstrip line can be reduced, and the radio frequency performance of the radio frequency module is improved.

As a possible design, the switch is a single pole, multiple throw switch. Based on the scheme, the connection relation between the signal input port and the signal output port of the switch can be conveniently controlled.

As one possible design, the switch is a single pole, four throw switch. The number of switches is 2. The number of signal input ports in each switch is 4. Based on the scheme, the multi-combination multi-band combiner can realize the combiner function in a wide frequency range, and has strong expansibility.

As a possible design, the first frequency band is a B1 frequency band, and the second frequency band is a B40 frequency band. Based on the scheme, the B1 frequency band and the B40 frequency band can be conveniently combined.

As a possible design, the number of signal processing units is smaller than or equal to the number of signal input ports. Based on the scheme, the number of the signal processing units can be set according to needs, and the flexibility and the expansibility are strong.

As a possible design, the signal processing unit is any one of the following: a wave trap, a high pass filter, a low pass filter, a band pass filter. Based on the scheme, the passband and the stopband of the signal processing unit can be conveniently adjusted.

In a second aspect, there is provided a radio frequency system comprising: at least one radio frequency module according to any of the first aspect and at least one antenna. Different antennas are connected to common ports in different radio frequency modules.

In a third aspect, an electronic device is provided, comprising a baseband chip and the radio frequency system as in the second aspect. The baseband chip is connected with each signal processing unit in the radio frequency system. The baseband chip is used for sending radio frequency signals to each signal processing unit.

It should be understood that, technical features of the technical solutions provided by the second aspect and the third aspect may correspond to the radio frequency module provided in the first aspect and possible designs thereof, so that similar beneficial effects can be achieved, and details are not described herein.

Drawings

FIG. 1 is a schematic diagram of a radio frequency module;

FIG. 2 is a graph of insertion loss versus frequency response for an RF module;

FIG. 3 is a graph illustrating the insertion loss versus frequency response of another RF module;

FIG. 4 is a graph illustrating the insertion loss versus frequency response of another RF module;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a radio frequency module according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of another radio frequency module according to an embodiment of the present disclosure;

fig. 8 is a response diagram of insertion loss and frequency of an rf module according to an embodiment of the present disclosure;

fig. 9 is a response diagram of insertion loss and frequency of another rf module according to an embodiment of the present disclosure;

fig. 10 is a graph illustrating a response of an insertion loss and a frequency of an rf module according to an embodiment of the present disclosure;

fig. 11 is a graph illustrating a response of an insertion loss and a frequency of an rf module according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of another RF module;

fig. 13 is a schematic view of another radio frequency module according to an embodiment of the present disclosure;

fig. 14 is a graph illustrating a response of an insertion loss and a frequency of an rf module according to an embodiment of the present disclosure;

fig. 15 is a graph illustrating a response of an insertion loss and a frequency of an rf module according to an embodiment of the present disclosure;

fig. 16 is a schematic view of another radio frequency module according to an embodiment of the present application;

fig. 17 is a response diagram of insertion loss versus frequency of another rf module according to an embodiment of the present application;

fig. 18 is a graph illustrating a response of an insertion loss and a frequency of an rf module according to an embodiment of the present disclosure;

fig. 19 is a response diagram of insertion loss and frequency of another rf module according to an embodiment of the present disclosure.

Detailed Description

The terms "first", "second", and "third" in the embodiments of the present application are used to distinguish different objects, and are not used to define a specific order. Furthermore, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

To facilitate understanding of the embodiments of the present application, the background of the application of the present application is described below.

Please refer to fig. 1, which is a schematic diagram of a radio frequency module. As shown in fig. 1, the rf module includes a switch a, a switch b and a combiner c. The combiner c includes a signal input port c1, a signal input port c2, and a signal output port c3. The switch a and the switch b are both single-pole four-throw switches.

The single-pole four-throw switch comprises a movable end and four fixed ends. Wherein, the movable end, namely the port where the knife is positioned, and the fixed end, namely the knife, can select whether the port is connected with the movable end or not. A single pole, four throw switch may connect the moving terminal to any one of the four stationary terminals through a "pole".

In the radio frequency module shown in fig. 1, the moving end of the switch a is connected to the signal input port c1 of the combiner c, and the four fixed ends of the switch a are respectively connected to radio frequency signals of different frequency bands. The moving end of the switch b is connected with the signal input port c2 of the combiner c, and the four fixed ends of the switch b are respectively connected with the radio-frequency signals of different frequency bands. And the signal output port of the combiner c is connected with the antenna d.

It can be understood that the radio frequency signal output from the switch a and the radio frequency signal output from the switch b may be combined by the combiner c and then transmitted to the antenna d. Therefore, radio frequency signals of different frequency bands can share the same antenna, the number of antennas in the electronic equipment is reduced, and the space utilization rate of the electronic equipment is improved.

However, the combiner is a passive device, and the insertion loss of the rf module is large by adding the combiner to the rf module. This conclusion can be verified by simulating the rf module shown in fig. 1.

When the switch a outputs the radio frequency signal of the B1 frequency band and the switch B is turned off, that is, the radio frequency module is in the single on state, the relationship between the insertion loss and the frequency of the radio frequency module is shown in fig. 2. Please refer to fig. 2, which is a graph of insertion loss and frequency response of the rf module. As shown in fig. 2, at the point m1, i.e. at a frequency of about 2.1GHz, the insertion loss of the rf module is about-3.4 dB.

When the switch a is turned off and the switch B outputs the rf signal of B40 band, i.e. the rf module is in single on state, the relationship between the insertion loss and the frequency of the rf module is as shown in fig. 3. Please refer to fig. 3, which is a graph illustrating the insertion loss and frequency response of another rf module. As shown in fig. 3, at the m2 point, i.e. the frequency is about 2.3GHz, the insertion loss of the rf module is about-3.9 dB.

When the switch a outputs the radio frequency signal of the B1 frequency band and the switch B outputs the radio frequency signal of the B40 frequency band, that is, when the radio frequency module is in the combining state, the relationship between the insertion loss and the frequency of the radio frequency module is as shown in fig. 4. Please refer to fig. 4, which is a graph illustrating the response of the insertion loss and the frequency of another rf module. The first curve is a relation curve of insertion loss and frequency of a channel where the B1 frequency band is located, namely the channel where the switch a is located; the second curve is a relationship curve of insertion loss and frequency of a path where the B40 frequency band is located, that is, a path where the switch B is located.

In fig. 4, at the point m3 in the first curve, i.e. at a frequency of about 2.1GHz, the insertion loss of the path in which the switch a is located is about-3.4 dB; at point m4 in the second curve, i.e. at a frequency of around 2.3GHz, the insertion loss of the path in which switch b is located is around-3.9 dB.

It can be seen that, when the combiner is disposed in the rf module, the insertion loss of the rf module is relatively large. Even when the rf module does not need to combine the rf signals of different frequency bands, as shown in fig. 2 and fig. 3, the insertion loss caused by the combiner still exists, which has a great influence on the rf performance of the rf module.

In order to solve the problem, embodiments of the present application provide a radio frequency module, a radio frequency system, and an electronic device, which can significantly reduce insertion loss when the radio frequency module is in a single on state, and improve radio frequency performance of the radio frequency module.

The radio frequency module and the radio frequency system provided by the embodiment of the application can be applied to electronic equipment. An electronic device may refer to a device provided with an antenna and a radio frequency path, such as a mobile phone, a tablet, a wearable device (e.g., a smart watch), an in-vehicle device, a Laptop computer (Laptop), a desktop computer, and so on. Exemplary embodiments of the terminal device include, but are not limited to, piggybacking

Or other operating system.

As an example, please refer to fig. 5, which is a schematic structural diagram of an electronic device 500 according to an embodiment of the present disclosure.

As shown in fig. 5, the electronic device 500 may include a processor 501, a communication module 502, a display 503, and the like.

Among other things, processor 501 may include one or more processing units, such as: the processor 501 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video stream codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more of the processors 501.

The controller may be a neural center and a command center of the electronic device 500. The controller can generate an operation control signal according to the instruction operation code and the time sequence signal to finish the control of instruction fetching and instruction execution.

A memory may also be provided in processor 501 for storing instructions and data. In some embodiments, the memory in the processor 501 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 501. If the processor 501 needs to use the instruction or data again, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 501, thereby increasing the efficiency of the system.

In some embodiments, processor 501 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a mobile industry processor 501 interface (mobile industry processor interface, MIPI), a general-purpose-input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface 511, etc.

The electronic device 500 implements display functions via the GPU, the display screen 503, and the application processor 501. The GPU is a microprocessor for image processing, and is connected to a display screen 503 and an application processor 501. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 501 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 503 is used to display images, video streams, and the like.

The communication module 502 may include an antenna x, an antenna y, a mobile communication module 502A, and/or a wireless communication module 502B. Take the case that the communication module 502 includes the antenna x, the antenna y, the mobile communication module 502A and the wireless communication module 502B.

The wireless communication function of the electronic device 500 may be implemented by the antenna x, the antenna y, the mobile communication module 502A, the wireless communication module 502B, the modem processor, the baseband processor, and the like.

Antenna x and antenna y are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device 500 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: antenna x may be multiplexed as a diversity antenna for a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 502A may provide a solution for wireless communication including 2G/3G/4G/5G, etc. applied to the electronic device 500. The mobile communication module 502A may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 502A may receive the electromagnetic wave from the antenna x, filter, amplify, etc. the received electromagnetic wave, and transmit the filtered electromagnetic wave to the modem processor for demodulation. The mobile communication module 502A may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves via the antenna x for radiation. In some embodiments, at least some of the functional modules of the mobile communication module 502A may be disposed in the processor 501. In some embodiments, at least some of the functional modules of the mobile communication module 502A may be provided in the same device as at least some of the modules of the processor 501.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 506A, the receiver 506B, etc.) or displays an image or video stream through the display screen 503. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be independent of the processor 501 and may be disposed in the same device as the mobile communication module 502A or other functional modules.

The wireless communication module 502B may provide a solution for wireless communication applied to the electronic device 500, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), bluetooth (bluetooth, BT), global Navigation Satellite System (GNSS), frequency Modulation (FM), near Field Communication (NFC), infrared (IR), and the like. The wireless communication module 502B may be one or more devices that integrate at least one communication processing module. The wireless communication module 502B receives electromagnetic waves via the antenna y, performs frequency modulation and filtering on the electromagnetic wave signal, and transmits the processed signal to the processor 501. The wireless communication module 502B may also receive a signal to be transmitted from the processor 501, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna y to radiate the electromagnetic waves.

In some embodiments, the antenna x of the electronic device 500 is coupled to the mobile communication module 502A and the antenna y is coupled to the wireless communication module 502B such that the electronic device 500 can communicate with networks and other devices via wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), general Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), long Term Evolution (LTE), BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

As shown in fig. 5, in some implementations, the electronic device 500 may further include an external memory interface 150, an internal memory 504, a Universal Serial Bus (USB) interface 511, a charging management module 512, a power management module 513, a battery 514, an audio module 506, a speaker 506A, a microphone 506B, a microphone 506C, an earphone interface 506D, a sensor module 505, a key 509, a motor, an indicator 508, a camera 507, a Subscriber Identity Module (SIM) card interface, and the like.

The charge management module 512 is used to receive charging input from the charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 512 may receive charging input from a wired charger via the USB interface 511. In some wireless charging embodiments, the charging management module 512 may receive a wireless charging input through a wireless charging coil of the electronic device 500. The charging management module 512 can also supply power to the electronic device 500 through the power management module 513 while charging the battery 514.

The power management module 513 is used to connect the battery 514, the charging management module 512 and the processor 501. The power management module 513 receives input from the battery 514 and/or the charging management module 512, and provides power to the processor 501, the internal memory 504, the external memory, the display 503, the camera 507, the wireless communication module 502B, and the like. The power management module 513 may also be configured to monitor parameters such as the capacity of the battery 514, the number of cycles of the battery 514, and the state of health (leakage, impedance) of the battery 514. In other embodiments, the power management module 513 may be disposed in the processor 501. In other embodiments, the power management module 513 and the charging management module 512 may be disposed in the same device.

The external memory interface 150 may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the electronic device 500. The external memory card communicates with the processor 501 through the external memory interface 150 to implement a data storage function. For example, files such as music, video streams, etc. are saved in the external memory card.

The internal memory 504 may be used to store computer-executable program code, which includes instructions. The processor 501 executes various functional applications of the electronic device 500 and data processing by executing instructions stored in the internal memory 504.

The internal memory 504 may further store one or more computer programs corresponding to the data transmission method provided in the embodiments of the present application.

Electronic device 500 may implement audio functions via audio module 506, speaker 506A, microphone 506B, headset interface 506C, headset interface 506D, and applications processor 501, among other things. Such as music playing, recording, etc.

The keys 509 include a power-on key, a volume key, and the like. The keys 509 may be mechanical keys 509. Or may be a touch key 509. The electronic device 500 may receive key 509 inputs to generate key signal inputs relating to user settings and function controls of the electronic device 500.

The indicator 508 may be an indicator light, and may be used to indicate a charging status, a change in charge level, or may be used to indicate a message, a missed call, a notification, etc.

The SIM card interface is used for connecting the SIM card. The SIM card can be brought into and out of contact with the electronic device 500 by being inserted into and pulled out of the SIM card interface. The electronic device 500 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface can support a Nano SIM card, a Micro SIM card, an SIM card and the like. Multiple cards can be inserted into the same SIM card interface at the same time. The types of the plurality of cards may be the same or different. The SIM card interface may also be compatible with different types of SIM cards. The SIM card interface may also be compatible with external memory cards. The electronic device 500 interacts with the network through the SIM card to implement functions such as communication and data communication. In some embodiments, the electronic device 500 employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the electronic device 500 and cannot be separated from the electronic device 500.

The sensor module 505 in the electronic device 500 may include a touch sensor, a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, an ambient light sensor, a fingerprint sensor, a temperature sensor, a bone conduction sensor, etc. to implement sensing and/or acquiring functions for different signals.

It is to be understood that the illustrated structure of the present embodiment does not constitute a specific limitation to the electronic device 500. In other embodiments, the electronic device 500 may include more or fewer components than illustrated, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Based on the above description of the structure of the electronic device, the radio frequency module provided in the embodiments of the present application is specifically described below. It should be noted that the radio frequency module provided in the embodiments of the present application is used for transmitting signals or receiving signals through an antenna.

Please refer to fig. 6, which is a schematic diagram of a radio frequency module according to an embodiment of the present disclosure. As shown in fig. 6, the rf module includes: a plurality of switches 601, a plurality of signal processing units 602, and a common port 603. It should be noted that the number of switches 601, the number of signal processing units 602, the number of signal input ports 621, and the like in fig. 6 are merely illustrative and do not represent that the present application is limited thereto. In practical applications, the number of the switches 601 is greater than or equal to 2, the number of the signal processing units 602 is greater than or equal to 2, and the number of the signal input ports 621 is greater than or equal to 2.

It should be noted that the signal processing unit may be a high-pass filter, a low-pass filter, a band-pass filter, etc., and is not limited herein.

The switch 601 includes a signal output port 611 and a plurality of signal input ports 621. The signal output port 611 is connected to the common port 603. The switch 601 is used to connect or disconnect the signal output port 611 and any one of the signal input ports 621. In other words, the switch 601 can only select at most one of the signal input ports 621 to communicate with the signal output port 611.

In the embodiment of the present application, the signal output port 611 and the common port 603 may be connected by a microstrip line. Therefore, the reliability of connection can be improved, and the miniaturization and the light weight of the radio frequency module are facilitated. In addition, the length of the microstrip line can be less than or equal to a quarter wavelength, so that the insertion loss of the microstrip line can be reduced, and the radio frequency performance of the radio frequency module is improved. It should be understood that the quarter wavelength mentioned above refers to a quarter of the smallest wavelength among the wavelengths of the radio frequency signals received by the switch corresponding to the signal output port 611. Illustratively, the first switch 601a includes a B40 band and a B41 band, a length of a microstrip line between the signal output port corresponding to the first switch 601a and the common port 603 may be less than a quarter of a wavelength corresponding to a radio frequency signal with a maximum frequency in the B41 band.

The common port 603 is also connected to an antenna. That is, one end of the common port 603 is connected to the signal output port 611 of each switch 601, and the other end is connected to an antenna. It can be understood that when the antenna transmits a signal, a corresponding radio frequency signal is transmitted to the antenna through the common port 603; when the antenna receives a signal, a corresponding rf signal is transmitted from the antenna to the common port 603.

Different signal processing units 602 are connected to different signal input ports 621. That is, one signal processing unit 602 corresponds to one signal input port 621. It should be noted that, in the embodiments of the present application, different signal processing units do not refer to different properties of stop bands, pass bands, and the like of the signal processing units, but refer to signal processing units of different physical entities. For example, two signal processing units with identical properties of the stop band, the pass band, etc. may also be referred to as different signal processing units in the embodiments of the present application. It should further be appreciated that under the above definition, the number of signal processing units is less than or equal to the number of signal input ports.

The stop band of the signal processing unit refers to a frequency band covered by the radio frequency signal that cannot pass through the signal processing unit, and the pass band of the signal processing unit refers to a frequency band covered by the radio frequency signal that can pass through the signal processing unit.

The plurality of switches 601 includes a first switch 601a and a second switch 601b. The first switch 601a receives the radio frequency signal of the first frequency band through the first signal processing unit 602 a. The second switch 601b receives the radio frequency signal of the second frequency band through the second signal processing unit 602 b.

It should be understood that the first switch 601a is capable of receiving the radio frequency signal of the first frequency band through the first signal processing unit 602a, which illustrates that the passband of the first signal processing unit 602a covers the first frequency band. Similarly, the second switch 601b can receive the radio frequency signal of the second frequency band through the second signal processing unit 602b, which means that the passband of the second signal processing unit 602b covers the second frequency band.

The stop band of the first signal processing unit 602a covers the second frequency band, and the stop band of the second signal processing unit 602b covers the first frequency band. It can be understood that, by such a design, the radio frequency signal in the first frequency band cannot pass through the second signal processing unit 602b, and the radio frequency signal in the second frequency band cannot pass through the first signal processing unit 602a, so as to reduce the loss of the radio frequency signal and improve the radio frequency performance of the radio frequency module.

The first switch 601a and the second switch 601b are any two switches among the plurality of switches 601. The first signal processing unit 602a is any signal processing unit connected to the first switch 601a, and the second signal processing unit 602b is any signal processing unit connected to the second switch 601b. The first frequency band and the second frequency band are two different arbitrary frequency bands. In the embodiment of the present application, the two different frequency bands refer to two frequency bands without any intersection at all. For example, the frequency covered by the frequency band m is 1000MHz-1500MHz, the frequency covered by the frequency band n is 1600MHz-2000MHz, and the frequency band m and the frequency band n are two different frequency bands. For another example, the frequency covered by the frequency band t is 1300MHz-1800MHz, the frequency band m and the frequency band t are not two different frequency bands, and the frequency band n and the frequency band t are not two different frequency bands.

The radio frequency module provided by the embodiment of the present application is described above by taking any two switches among the plurality of switches as examples. From the above description of the characteristics of any two switches, the connection relationship between all the switches and the signal processing unit, the relationship between the passband of the signal processing unit, the stopband, and the frequency band of the radio frequency signal in the radio frequency module provided in this embodiment of the present application can be directly and unambiguously determined, and will not be described herein.

It can be understood that, when the switches other than the first switch and the second switch are all turned off, the rf module provided in the embodiment of the present application has at least three operating states, which are: the first switch is connected, and the second switch is disconnected; the first switch is disconnected, and the second switch is connected; the first switch and the second switch are both communicated. The working state that the first switch is connected, the second switch is disconnected and the working state that the first switch is disconnected and the second switch is connected can be called a single-on state. The working state in which the first switch and the second switch are both connected may be referred to as a combining state.

It should be noted that the switch being on means that the signal output port of the switch is connected to one of the signal input ports, and the switch being off means that the signal output port of the switch is not connected to any of the signal input ports. In addition, when one of the switches is connected, the radio frequency module can be called as a single-on state; when at least two switches of the switches are connected, the radio frequency modules can be called a combining state. The first switch and the second switch are used as examples for convenience of description, and do not represent a limitation to the present application.

For convenience of description, the single-on state of the rf module will be described by taking an example that the first signal input port of the first switch is connected to the signal output port, and the second switch is disconnected. The first signal input port is a signal input port connected with the first signal processing unit.

The radio frequency signal of the first frequency band is firstly transmitted to a first signal processing unit; because the passband of the first signal processing unit covers the first frequency band, the radio-frequency signal of the first frequency band can be transmitted to the first signal input port of the first switch through the first signal processing unit; the first signal input port and the signal output port are in a communicated state, so that the radio-frequency signal of the first frequency band is transmitted to the signal output port of the first switch; the radio frequency signal of the first frequency band is transmitted to the public port from the signal output port of the first switch; since other switches are all open, the radio frequency signal of the first frequency band is transmitted to the antenna from the public port and is transmitted by the antenna.

In the embodiment of the present application, there are a plurality of signal processing units connected to the first switch, and there are a plurality of signal processing units connected to the second switch. The frequency of the signal processing unit connected with the first switch is different from that of the signal processing unit connected with the second switch, and the functions of the combiner can be realized by combining two signals. The above description is taken as an example of a first switch, a first signal processing unit connected to the first switch, a second switch, and a second signal processing unit connected to the second switch, and the present application is not limited thereto.

It can be seen that, in the radio frequency module provided in the embodiment of the present application, when one and only one switch is connected and the other switches are all disconnected, that is, in a single on state, there is no element with large insertion loss in a transmission path of a radio frequency signal. Therefore, the whole insertion loss of the radio frequency module is smaller, and the radio frequency performance is better.

The following describes the single-on state of the rf module by taking an example that the second signal input port of the second switch is connected to the signal output port, and the first switch is disconnected. The second signal input port is a signal input port connected with the second signal processing unit.

The radio frequency signal of the second frequency band is firstly transmitted to a second signal processing unit; the passband of the second signal processing unit covers the second frequency band, so that the radio-frequency signal of the second frequency band can be transmitted to the second signal input port of the second switch through the second signal processing unit; the second signal input port and the signal output port are in a communicated state, so that the radio-frequency signal of the second frequency band is transmitted to the signal output port of the second switch; the radio frequency signal of the second frequency band is transmitted to the public port from the signal output port of the second switch; since the other switches are all open, the radio frequency signal of the second frequency band is transmitted to the antenna from the public port and is transmitted by the antenna.

And when the first switch is switched off, no element with large insertion loss exists in a transmission path of the radio-frequency signal. Therefore, the whole insertion loss of the radio frequency module is smaller, and the radio frequency performance is better.

And finally, the combination state of the radio frequency module is described by taking an example that a first signal input port in the first switch is communicated with a signal output port, and a second signal input port in the second switch is communicated with the signal output port.

Before being transmitted to the public port, the radio frequency signal of the first frequency band and the radio frequency signal of the second frequency band are the same as those in the single-on state. When the radio frequency signal of the first frequency band is transmitted to the public port, one part of the radio frequency signal can be combined with the radio frequency signal of the second frequency band and then transmitted to the antenna, and the other part of the radio frequency signal can be reversely transmitted to the second signal processing unit along the transmission path of the radio frequency signal of the second frequency band; because the stop band of the second signal processing unit covers the first frequency band, the radio frequency signal of the first frequency band cannot flow through the second signal processing unit, and can be reflected to the public port, and then is combined with the radio frequency signal of the second frequency band and transmitted to the antenna. Similarly, when the radio frequency signal of the second frequency band is transmitted to the common port, a part of the radio frequency signal may be combined with the radio frequency signal of the first frequency band and then transmitted to the antenna, and the other part of the radio frequency signal may be transmitted to the first signal processing unit along the transmission path of the radio frequency signal of the first frequency band; because the stop band of the first signal processing unit covers the second frequency band, the radio frequency signal of the second frequency band cannot flow through the first signal processing unit and can be reflected to the public port, and then is combined with the radio frequency signal of the first frequency band and transmitted to the antenna.

It should be emphasized again that the above description is only given by way of example of the first switch, the first signal processing unit connected to the first switch, the second switch, and the second signal processing unit connected to the second switch. In the embodiment of the present application, there are a plurality of switches, and there are a plurality of signal processing units connected to the switches. Wherein, the frequencies of the signal processing units connected with different switches are different. The signal processing unit connected to any switch suffices that its pass band is covered by the stop band of the signal processing unit connected to the other switch, and that its stop band covers the pass band of the signal processing unit connected to the other switch. Therefore, any two signal processing units connected with different switches can be combined in pairs to realize the function of the combiner, the whole insertion loss influence on the radio frequency module is small, and the performance of the radio frequency module is favorably improved.

The structure and common state of the radio frequency module provided by the embodiment of the present application are introduced above. It can be seen that the radio frequency module does not include elements with larger insertion loss, such as a combiner, and the like, so that the insertion loss in a radio frequency channel can be reduced, and the performance of the radio frequency module is improved.

Next, the radio frequency module shown in fig. 7 is simulated, and the simulation result is compared with the simulation result of the radio frequency module shown in fig. 1, so as to verify that the radio frequency module provided in the embodiment of the present application can indeed reduce the insertion loss in the radio frequency path and improve the radio frequency performance of the radio frequency module, compared with the radio frequency module in the related art.

Please refer to fig. 7, which is a schematic diagram of another rf module according to an embodiment of the present disclosure. As shown in fig. 7, the rf module includes 2 single-pole four-throw switches, which are respectively referred to as a third switch 701 and a fourth switch 702; the number of the signal input ports in the third switch 701 and the fourth switch 702 is 4, and the signal input ports are respectively arranged at the fixed ends of the corresponding switches. The third switch 701 is connected to the radio frequency signal in the B1 frequency band through a third trap 703, and is also connected to the radio frequency signal in the B2 frequency band through a fourth trap 704. The fourth switch 702 is connected to the radio frequency signal in the B41 frequency band through a fifth trap 705, to the radio frequency signal in the B40 frequency band through a sixth trap 706, and to the radio frequency signal in the B7 frequency band through a seventh trap 707. The passband of the third trap 703 covers a B1 frequency band, the stopband covers a B7 frequency band, a B40 frequency band, and a B41 frequency band; the passband of the fourth wave trap 704 covers the B2 frequency band, the stopband covers the B7 frequency band, the B40 frequency band and the B41 frequency band; the passband of the fifth wave trap 705 covers the B41 frequency band, and the stopband covers the B1 frequency band and the B2 frequency band; the passband of the sixth trap 706 covers the B40 band, and the stopband covers the B1 band and the B2 band; the seventh trap 707 has a passband covering the B7 band and a stopband covering the B1 band and the B2 band.

In the following, taking an example in which the signal output port of the third switch in fig. 7 is communicated with the signal input port connected to the third wave trap to output the radio frequency signal in the B1 frequency band, and the fourth switch is turned off, the insertion loss when the radio frequency module is in the single on state is described with reference to fig. 8.

Please refer to fig. 8, which is a diagram illustrating a response between insertion loss and frequency of a radio frequency module according to an embodiment of the present disclosure. As shown in fig. 8, in the B1 band, for example, when the m5 point is about 2.1GHz, the insertion loss of the rf module is about-2.85 GHz.

As can be seen from fig. 2, when the switch a outputs a radio frequency signal in the B1 frequency band and the switch B is turned off, the insertion loss of the radio frequency module corresponding to the frequency of 2.1GHz is about-3.4 dB.

In the following, taking the example that the signal output port of the fourth switch in fig. 7 is communicated with the signal input port connected to the sixth wave trap to output the radio frequency signal in the B40 frequency band, and the third switch is turned off, the insertion loss when the radio frequency module is in the single-on state is described with reference to fig. 9.

Please refer to fig. 9, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in fig. 9, in the B40 band, for example, at m6 point, that is, at a frequency of about 2.3GHz, the insertion loss of the rf module is about-2.9 dB.

It can be seen from the above fig. 3 that when the switch a of the rf module shown in fig. 1 is turned off and the switch B outputs the rf signal in the B40 frequency band, the insertion loss of the rf module corresponding to the frequency of 2.3GHz is about-3.9 dB.

As can be seen from the comparison between fig. 2 and fig. 8 and the comparison between fig. 9 and fig. 3, the insertion loss gain of the rf module provided by the embodiment of the present application in the single on state is 0.55dB to 1dB.

Therefore, compared with the radio frequency module in the related art, the radio frequency module provided by the embodiment of the application can obviously reduce the insertion loss in the radio frequency channel when the radio frequency module is in a single-on state, thereby being beneficial to improving the radio frequency performance of the radio frequency module.

Taking the example that the signal output port of the third switch in fig. 7 is communicated with the signal input port connected to the third wave trap to output the radio frequency signal in the B1 frequency band, the signal output port of the fourth switch is communicated with the signal input port connected to the sixth wave trap to output the radio frequency signal in the B40 frequency band, the insertion loss in the B1 frequency band when the radio frequency module is in the combining state is described with reference to fig. 10.

Please refer to fig. 10, which is a diagram illustrating a response of insertion loss and frequency of another rf module according to an embodiment of the present disclosure. As shown in fig. 10, at m7, i.e., around 2.1GHz, the insertion loss of the rf module is around-3.36 dB.

As can be seen from fig. 4, when the switch a outputs the rf signal in the B1 frequency band and the switch B outputs the rf signal in the B40 frequency band, the insertion loss of the rf module corresponding to 2.1GHz is about-3.4 dB.

Taking the example that the signal output port of the third switch in fig. 7 is communicated with the signal input port connected to the third wave trap to output the radio frequency signal in the B1 frequency band, the signal output port of the fourth switch is communicated with the signal input port connected to the sixth wave trap to output the radio frequency signal in the B40 frequency band, the insertion loss in the B40 frequency band when the radio frequency module is in the combining state is described with reference to fig. 10.

Please refer to fig. 11, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in fig. 11, at m8, i.e. around 2.3GHz, the insertion loss of the rf module is around-4.05 dB.

As can be seen from fig. 4, when the switch a outputs the rf signal in the B1 frequency band and the switch B outputs the rf signal in the B40 frequency band, the insertion loss of the rf module corresponding to 2.3GHz is about-3.9 dB.

Therefore, as can be seen from a comparison between fig. 10 and fig. 4, and a comparison between fig. 11 and fig. 4, the insertion loss in the radio frequency path is substantially the same when the radio frequency module is in the combining state, and the phase difference is smaller in the radio frequency module provided in the embodiment of the present application compared with the radio frequency module in the related art.

To sum up, the radio frequency module that this application embodiment provided can reduce the insertion loss in the radio frequency module, especially the insertion loss when the radio frequency module is in the single on-state to improve the radio frequency performance of radio frequency module.

It should be understood that, the simulation described above only takes the B1 frequency band and the B40 frequency band as examples to illustrate that the insertion loss of the radio frequency module provided in the embodiment of the present application is small, and does not represent that the present application is limited thereto. For example, at B1 frequency band + B41 frequency band, B1 frequency band + B7 frequency band, B3 frequency band + B40 frequency band, B3 frequency band + B41 frequency band, B3 frequency band + B7 frequency band etc., the insertion loss of the radio frequency module that this application embodiment provided all is less than the insertion loss of radio frequency module in the correlation technique.

For example, a combination of a radio frequency signal in the B32 frequency band and a radio frequency signal in the intermediate frequency band is taken as an example here, which illustrates that the radio frequency module provided in the embodiment of the present application has a smaller single-pass insertion loss. In the embodiment of the present application, the frequency range covered by the intermediate frequency is about 1.7GHz to 2.2GHz.

Please refer to fig. 12, which is a schematic diagram of another rf module. Fig. 12 shows a radio frequency module applied to combine a radio frequency signal of a B32 frequency band and a radio frequency signal of an intermediate frequency in a related scheme, where the radio frequency signal of the B32 frequency band and the radio frequency signal of the intermediate frequency are combined by a combiner. By querying the data in the correlation scheme, the insertion loss is about-1.04 dB when the rf module shown in fig. 12 is in the single on state of B32; at the single on-state of the intermediate frequency, the insertion loss is about-0.62 dB.

When the radio frequency module provided in the embodiment of the present application combines the radio frequency signal of the B32 frequency band and the radio frequency signal of the intermediate frequency, the structure of the radio frequency module may be as shown in fig. 13. Please refer to fig. 13, which is a schematic diagram of another radio frequency module according to an embodiment of the present application. The rf module includes a fifth switch 1301, a sixth switch 1302, an eighth trap 1303, a ninth trap 1304, and a common port 1305. The fifth switch 1301 is a single-pole double-throw switch, and the sixth switch 1302 is a Diversity (DRX) common port 1305. The fifth switch 1301 includes two signal input ports, one of which is connected to the radio frequency signal in the B32 band through the eighth wave trap 1303, and the other is left vacant. The fifth switch 1301 also comprises a signal output connected to the common port 1305. A signal input port of the sixth switch 1302 is connected to an intermediate frequency radio frequency signal, and a signal output port is connected to the common port 1305 through a ninth trap 1304. The sixth switch 1302 is used to disconnect or connect the signal input port and the signal output port of the sixth switch 1302. The stop band of the eighth wave trap 1303 covers the intermediate frequency, and the pass band covers the B32 frequency band; the stop band of the ninth notch filter 1304 covers the B32 band and the pass band covers the intermediate frequency.

Next, taking the fifth switch in fig. 13 outputting the radio frequency signal in the B32 frequency band and the sixth switch being turned off as an example, the insertion loss of the radio frequency module in the B32 single on state provided by the embodiment of the present application is described through fig. 14.

Please refer to fig. 14, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in FIG. 14, the insertion loss of the RF module is between-1.341 dB and-1.307 dB at a frequency near m9, i.e. between 1.452GHz and 1.496 GHz.

Next, taking the sixth switch in fig. 13 outputting an intermediate-frequency rf signal and the fifth switch being turned off as an example, the insertion loss of the rf module provided in the embodiment of the present application in the intermediate-frequency single-on state will be described with reference to fig. 15.

Please refer to fig. 15, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in FIG. 15, the insertion loss of the RF module is between-0.742 dB and-0.735 dB at the point m10, i.e., at the frequency between 1.920GHz and 2.170 GHz.

It can be seen that, in both the B32 single-on state and the intermediate frequency single-on state, the insertion loss of the rf module provided in the embodiment of the present application in fig. 13 is smaller than that of the rf module in the related art in fig. 12.

In the combined state, the insertion loss of the rf module shown in fig. 13 is substantially the same as that of the rf module shown in fig. 12.

Based on the foregoing fig. 12-fig. 15, it can be seen that the radio frequency module according to the embodiment of the present application can reduce insertion loss in the radio frequency module, especially insertion loss when the radio frequency module is in a single on state, so as to improve radio frequency performance of the radio frequency module.

Compared with the radio frequency module in the related art, the radio frequency module provided by the embodiment of the application does not comprise a combiner, but adds a wave trap. As shown by simulation, the insertion loss caused by adding the wave trap is small.

Please refer to fig. 16, which is a schematic diagram of another rf module according to an embodiment of the present disclosure. As shown in fig. 16, the rf module includes an eighth switch 1601, a ninth switch 1602, a tenth trap 1603, an eleventh trap 1604, a first matching element 1605, a second matching element 1606, a third matching element 1607, a fourth matching element 1608, and a common port.

The eighth switch 1601 includes a signal input port, which is connected to the radio frequency signal in the B41 frequency band through the first matching element 1605 and the tenth trap 1603 in this order. The ninth switch 1602 includes a signal input port connected to the radio frequency signal of the intermediate frequency via the second matching element 1606 and the eleventh trap 1604 in this order.

A signal output terminal of the eighth switch 1601 is connected to the common port through a third matching element 1607, and a signal output terminal of the ninth switch 1602 is connected to the common port through a fourth matching element 1608.

The eighth switch 1601 is used to connect or disconnect a corresponding signal input port and a corresponding signal output port. Similarly, the ninth switch 1602 is used to connect or disconnect the corresponding signal input port and the signal output port.

The stop band of the tenth trap 1603 covers the intermediate frequency and the pass band covers the B41 band. The stopband of the eleventh trap 1604 covers the B41 band and the passband covers the intermediate frequency.

In the embodiment of the present application, the first matching element may be a capacitor, an inductor, or the like. The second matching element, the third matching element and the fourth matching element are similar to each other, and are not described herein again.

For comparison, a radio frequency module p is defined, which does not include the tenth trap and the eleventh trap compared to the radio frequency module shown in fig. 16, and is otherwise identical to the radio frequency module shown in fig. 16.

First, the rf module p is simulated to determine the insertion loss when the rf module shown in fig. 16 does not include the trap. Please refer to fig. 17, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in FIG. 17, in the intermediate frequency single-pass state, i.e. the frequency is between 1.71.GHz and 2.200GHz, the insertion loss of the RF module p is between-0.451 dB and 0.394 dB. In the B41 single-pass state, namely the frequency is between 2.496GHz and 2.690GHz, the insertion loss of the radio frequency module p is between-0.498 dB and 0.489 dB.

Next, the simulation is performed when the ninth switch is turned off and the eighth switch outputs the rf signal in the B41 band in the rf module shown in fig. 16. The insertion loss of the rf module shown in fig. 16 in the B41 single-pass state is illustrated in fig. 18.

Please refer to fig. 18, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in FIG. 18, in the B41 single-on state, i.e., the frequency is between 2.496GHz and 2.690GHz, the insertion loss of the RF module shown in FIG. 16 is between-0.812 dB and 0.775 dB.

Next, the simulation is performed on the rf module shown in fig. 16 when the eighth switch is turned off and the ninth switch outputs an intermediate frequency rf signal. The insertion loss of the rf module shown in fig. 16 in the intermediate frequency single-pass state is illustrated by fig. 19.

Please refer to fig. 19, which is a graph illustrating a response between an insertion loss and a frequency of another rf module according to an embodiment of the present application. As shown in fig. 19, in the intermediate frequency single-pass mode, i.e. the frequency is between 1.71.GHz and 2.200GHz, the insertion loss of the rf module shown in fig. 16 is between-0.801 dB and 0.530 dB.

It can be seen that, compare with radio frequency module p, behind the radio frequency module that this application embodiment provided set up the trapper, the insertion loss of single on-state has increased about 0.3 dB.

The insertion loss of the rf module shown in fig. 16 is increased by about 2dB in the combined state compared to the single-on state.

Therefore, to sum up, in the radio frequency module provided in the embodiment of the present application, the insertion loss increased by adding the wave trap is smaller, and therefore, the influence on the radio frequency performance of the radio frequency module is also smaller.

An embodiment of the present application further provides a radio frequency system, including: a plurality of radio frequency modules as described in any of the above embodiments and a plurality of antennas. Different antennas are connected to common ports in different radio frequency modules.

The embodiment of the application also provides electronic equipment which comprises a baseband chip and the radio frequency system. The baseband chip is connected with each wave trap in the radio frequency system. The baseband chip is used for sending radio frequency signals to each wave trap.

While the terminal antenna provided by the present application has been described above with reference to specific features and embodiments thereof, it will be apparent that various modifications and combinations of the above features can be made without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A radio frequency module, configured to transmit or receive a radio frequency signal through an antenna; the radio frequency module includes:

a plurality of switches, a plurality of signal processing units, and a common port;

the switch comprises a signal output port and a plurality of signal input ports; the signal output port is connected with the common port; the common port is connected with the antenna; different signal processing units are connected with different signal input ports;

the switch is used for connecting or disconnecting the signal output port and any one signal input port; the signal processing unit is provided with a passband and a stopband, and allows the radio-frequency signals of the frequency band covered by the passband to pass through and prevents the radio-frequency signals of the frequency band covered by the stopband from passing through;

the plurality of switches includes a first switch and a second switch; the first switch receives a radio frequency signal of a first frequency band through a first signal processing unit; the second switch receives the radio frequency signal of a second frequency band through a second signal processing unit;

the passband of the first signal processing unit and the stopband of the second signal processing unit cover the first frequency band; the stopband of the first signal processing unit and the passband of the second signal processing unit cover the second frequency band;

the first switch and the second switch are any two switches of the plurality of switches; the first signal processing unit is any signal processing unit connected with the first switch, and the second signal processing unit is any signal processing unit connected with the second switch; the first frequency band and the second frequency band are two different arbitrary frequency bands.

2. The rf module of claim 1, wherein the operating states of the rf module include a single-on state and a combined state;

when the working state of the radio frequency module is a single on state, one or more switches are connected; the radio frequency signal is transmitted to the public port through the communicated switch and is transmitted to the antenna through the public port;

when the working state of the radio frequency module is a combination state, at least two switches are communicated among the switches; and radio frequency signals are transmitted to the public port by the communicated switches, and are combined by the public port and then transmitted to the antenna.

3. The rf module of claim 1, wherein the signal output port and the common port are connected via a microstrip line.

4. The RF module of claim 3, wherein the microstrip line has a length less than or equal to a quarter wavelength.

5. The radio frequency module of claim 1, wherein the switch is a single-pole, multi-throw switch.

6. The rf module of claim 1, wherein the switch is a single-pole, four-throw switch; the number of the switches is 2; the number of the signal input ports in each switch is 4.

7. The RF module of claim 1, wherein the first frequency band is a B1 frequency band and the second frequency band is a B40 frequency band.

8. The RF module of claim 1, wherein the number of signal processing units is less than or equal to the number of signal input ports.

9. The radio frequency module according to claim 1, wherein the signal processing unit is any one of: a wave trap, a high pass filter, a low pass filter, a band pass filter.

10. A radio frequency system, comprising: at least one radio frequency module as claimed in any one of claims 1 to 9 and at least one antenna; different antennas are connected with the common port in different radio frequency modules.

11. An electronic device comprising a baseband chip and the radio frequency system of claim 10; the baseband chip is connected with each signal processing unit in the radio frequency system; the baseband chip is used for sending radio frequency signals to the signal processing units.