CN110830055B - Antenna module and antenna adapting method - Google Patents

Antenna module and antenna adapting method Download PDF

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Publication number
CN110830055B
CN110830055B CN201911043868.9A CN201911043868A CN110830055B CN 110830055 B CN110830055 B CN 110830055B CN 201911043868 A CN201911043868 A CN 201911043868A CN 110830055 B CN110830055 B CN 110830055B
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China
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antenna
module
frequency band
antennas
filtering
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CN201911043868.9A
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CN110830055A (en
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郑洋
许绍峰
宋玉喜
薛晶
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Xi'an Guanghetong Wireless Communication Co ltd
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Xi'an Guanghetong Wireless Communication Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0064—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0017—Digital filtering

Abstract

The application relates to an antenna module and an antenna adaptation method, wherein the antenna module comprises: the method comprises the following steps: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence; the radio frequency processing module processes the first frequency band signal; the switch module switches on or off a path between the filtering module and the radio frequency processing module; when the switch module is switched on, the filtering module performs filtering processing on the radio-frequency signals output by the radio-frequency processing module to output first frequency band signals and/or a plurality of second frequency band signals to the antenna module, and also performs filtering processing on the radio-frequency signals received by the antenna module to output the first frequency band signals and/or the plurality of second frequency band signals to the radio-frequency processing module; the antenna module includes: a first antenna for receiving and transmitting a first frequency band signal; and each second antenna is used for receiving or transmitting a corresponding second frequency band signal. The antenna module can select any number of antennas from the antenna module, and is high in compatibility and simple in design.

Description

Antenna module and antenna adapting method
Technical Field
The present application relates to the field of radio frequency communications, and in particular, to an antenna module and an antenna adaptation method.
Background
The communication technology is used as an important means of information transmission, and is continuously developed under the promotion of the deepening of the modern informatization process. Mobile communication systems have experienced rapid growth from 3G networks to 3G/WLAN integrated networks and then to the 5G networks of today. An antenna is a system component that radiates and receives electromagnetic waves, which is a throat element of a wireless communication system.
However, due to the different requirements of various types of radio frequency communication modules for the number of antennas, the corresponding antenna design schemes are also increasingly complex.
Disclosure of Invention
Accordingly, it is necessary to provide an antenna module and an antenna adapting method for solving the problem of complicated antenna design due to different requirements of the number of antennas.
An antenna module, comprising: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence;
the radio frequency processing module is configured to process a first frequency band signal, where the first frequency band includes: a plurality of second frequency bands;
the switch module is used for switching on or off a path between the filtering module and the radio frequency processing module;
the filtering module is configured to, when the switch module is turned on, perform filtering processing on the radio frequency signal output by the radio frequency processing module to output the first frequency band signal and/or the plurality of second frequency band signals to the antenna module, and further perform filtering processing on the radio frequency signal received by the antenna module to output the first frequency band signal and/or the plurality of second frequency band signals to the radio frequency processing module;
the antenna module includes:
a first antenna for receiving and transmitting the first frequency band signal;
and each second antenna is used for receiving or transmitting a corresponding second frequency band signal.
In one embodiment, the filtering module comprises: the first end of each filtering unit is connected with the radio frequency processing module through the switch module, the second end of each filtering unit is connected with the corresponding second antenna, the second end of each filtering unit is connected with the corresponding first antenna, and each filtering unit is used for filtering and outputting a corresponding second frequency band signal.
In one embodiment, the antenna module further includes: and the first end of the combiner is respectively connected with the plurality of filtering units, and the second end of the combiner is connected with the first antenna and is used for combining and transmitting the plurality of paths of second frequency band signals output by the plurality of filtering units to the first antenna.
In one embodiment, the switch module comprises: the switch units are arranged on the corresponding paths of the filter units and the radio frequency processing module, the switch units are in one-to-one correspondence with the filter units, and each switch unit is used for switching on or off the corresponding path between the filter unit and the radio frequency processing module.
In one embodiment, the filtering module comprises:
a first end of the first filtering unit is connected with the radio frequency processing module, and a second end of the first filtering unit is connected with the first antenna, and is used for performing noise filtering processing on the radio frequency communication signal in the first frequency band received by the first antenna;
and the first end of each second filtering unit is connected with the radio frequency processing module, the second end of each second filtering unit is connected with the corresponding second antenna, and each second filtering unit is used for filtering and outputting the corresponding second frequency band signal.
In one embodiment, the antenna module further includes:
and the combiner is connected with the first filtering unit and the first antenna at two ends respectively, and is used for combining the multiple paths of first frequency band signals output by the first filtering unit and then transmitting the combined signals to the first antenna.
In one embodiment, the switch module comprises: the number of the double-pole double-throw switch units is consistent with that of the second filtering units, and a first end and a second end of each switch unit are respectively connected with the first filtering unit and the corresponding second filtering unit; and the third end is connected with the radio frequency processing module, and each switch unit is used for switching on or switching off a path where the first filtering unit and/or the corresponding second filtering unit are located.
In one embodiment, the switch module comprises:
the first switch is respectively connected with the filtering module and the radio frequency communication module and is used for controlling the connection or disconnection of a path between the radio frequency communication module and the first antenna;
and each second switch is respectively connected with the filtering module and the radio frequency communication module and is used for controlling the connection or disconnection of a channel between the corresponding second antenna and the radio frequency communication module.
A method of antenna adaptation, the method comprising:
acquiring user requirements, wherein the user requirements comprise: determining the number N of target antennas, wherein the number of the target antennas is less than or equal to the sum of the numbers of the first antennas and the second antennas;
when N is equal to the number of the first antennas, taking the first antennas as the target antennas;
when N is greater than the first antenna and less than the number of the second antennas, regarding the first antenna as the target antenna, and selecting N-1 from a plurality of the second antennas as the target antenna;
and when N is equal to the number of the second antennas, taking each second antenna as the target antenna.
In one embodiment, the user requirements include: determining a frequency band corresponding to each target antenna;
the selecting the first antenna as the target antenna and N-1 from a plurality of the second antennas as the target antenna comprises:
taking the first antenna as a target antenna corresponding to the widest frequency band;
and selecting N-1 second antennas from the plurality of second antennas as the target antenna according to the matching degree of the frequency band corresponding to the target antenna and the plurality of second frequency bands.
The antenna module and the antenna adaptation method are characterized in that the antenna module comprises: the method comprises the following steps: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence; the radio frequency processing module is configured to process a first frequency band signal, where the first frequency band includes: a plurality of second frequency bands; the switch module is used for switching on or off a path between the filtering module and the radio frequency processing module; the filtering module is configured to, when the switch module is turned on, perform filtering processing on the radio frequency signal output by the radio frequency processing module to output the first frequency band signal and/or the plurality of second frequency band signals to the antenna module, and further perform filtering processing on the radio frequency signal received by the antenna module to output the first frequency band signal and/or the plurality of second frequency band signals to the radio frequency processing module; the antenna module is connected with the radio frequency processing module and comprises: a first antenna for receiving and transmitting the first frequency band signal; and each second antenna is used for receiving or transmitting a corresponding second frequency band signal. The antenna module in the scheme of the application can select any number of antennas from the antenna module through the control of the switch module and the filtering module, and the antenna module is strong in compatibility, simple in design and low in cost.
Drawings
Fig. 1 is a schematic structural diagram of an antenna module according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an antenna module according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of an antenna module according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of an antenna module according to yet another embodiment of the present application;
fig. 5 is a schematic structural diagram of an antenna module according to still another embodiment of the present application;
fig. 6 is a flowchart illustrating antenna adaptation according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood that 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.
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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
An embodiment of the present application provides an antenna module, as shown in fig. 1, the antenna module includes: the radio frequency processing module 110, the switch module 120, the filtering module 130 and the antenna module 140 are connected in sequence. The rf processing module 110 is configured to process a first frequency band signal, where the first frequency band signal includes: a plurality of second frequency bands. And a switching module 120 for switching on or off a path between the filtering module 130 and the rf processing module 110. The filtering module 130 is configured to, when the switch module 120 is turned on, filter the radio frequency signal output by the radio frequency processing module 110 to output the first frequency band signal and/or the plurality of second frequency band signals to the antenna module 140, and further filter the radio frequency signal received by the antenna module 140 to output the first frequency band signal and/or the plurality of second frequency band signals to the radio frequency processing module 110. The antenna module 140 includes: a first antenna 141 and a plurality of second antennas (142)1，1422,…,142n) Where the subscript n is a natural number equal to or greater than 2, the first antenna 141 for receiving and transmitting a first frequency band signal, and each of the second antennas 142i(i is more than or equal to 1 and less than or equal to n) for receiving or transmitting the corresponding second frequency bandA signal.
The relationship between the first frequency band and the second frequency band may be that the first frequency band can be obtained by sequentially splicing a plurality of second frequency bands, for example, when the first frequency band may be a signal in a preset frequency band, such as 100kHz to 1000kHz, the corresponding plurality of second frequency bands may be: 100kHz-400kHz, 400kHz-700kHz, 700kHz-1000 kHz; the plurality of second frequency bands are discrete frequency bands contained in the first frequency band, such as 100kHz-300kHz, 400kHz-600kHz, 700kHz-800kHz, 800kHz-1000 kHz; the first frequency band comprises a plurality of second frequency bands, and the plurality of second frequency bands have overlapping frequency bands such as: 100kHz-300kHz, 200kHz-600kHz, 700kHz-900kHz, 800kHz-1000kHz and the like. It should be noted that: the first frequency band may be a full frequency band covering low, intermediate, and high frequencies, and the plurality of second frequency bands may correspond to low, intermediate, and high frequencies, respectively.
Specifically, the rf processing module 110 can process a first frequency band signal, where the first frequency band signal includes: a plurality of second frequency bands. The rf processing module 110 can convert the low-frequency baseband signal into a first frequency band signal or a second frequency band signal. The switch module 120 may include a plurality of switches, which may be electronic switches, radio frequency switches, relay switches, etc. The switching module 120 may turn on or off a path between the filtering module 130 and the rf processing module 110, and may be used to select at least one target antenna from the antenna module 140 for communication. The filtering module 130 may include a plurality of filtering units, each of which is capable of receiving a reception signal from the transmission signal output from the rf processing module 110 and the antenna module 140. For the transmission signal, the filtering module 130 outputs a first frequency band signal and/or a second frequency band signal after filtering, and if the first frequency band signal is output, the first antenna 141 is used for transmitting the first frequency band signal; if the second frequency band signal is outputted, the second antenna 142 corresponding to the second frequency band is usedjAnd j is more than or equal to 1 and less than or equal to n, and sending. Aiming at the received signal, the noise signal in the signal received by the antenna module 140 is filtered, the noise filtering is carried out on the rest frequency bands which are not the first frequency band signal in the signal received by the first antenna 141, and each second antenna (142)1，1422,…,142n) The rest frequency bands which are not corresponding to the second frequency band signal in the corresponding receiving signal are subjected to noise filtering, and the filtered signals are subjected to noise filteringOutputs the first frequency band signal antenna module 140.
The antenna module includes: the method comprises the following steps: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence; the radio frequency processing module is used for processing a first frequency band signal, and the first frequency band comprises: a plurality of second frequency bands; the switch module is used for switching on or off a path between the filtering module and the radio frequency processing module; the filtering module is used for filtering the radio-frequency signals output by the radio-frequency processing module when the switch module is switched on so as to output the first frequency band signals and/or the plurality of second frequency band signals to the antenna module, and is also used for filtering the radio-frequency signals received by the antenna module so as to output the first frequency band signals and/or the plurality of second frequency band signals to the radio-frequency processing module; the antenna module includes: a first antenna for receiving and transmitting a first frequency band signal; and each second antenna is used for receiving or transmitting a corresponding second frequency band signal. The antenna module in the scheme of the application can select any number of antennas from the antenna module through the control of the switch module and the filtering module, and the antenna module is strong in compatibility, simple in design and low in cost.
In one embodiment, as shown in fig. 2, the filtering module 230 includes: a plurality of filter units (231)1，2312,…,231n) Where the index n is a natural number equal to or greater than 2, each filtering unit (231)1，2312,…,231n) Is connected to the rf processing module 210 via the switch module 220, each filtering unit (231)1，2312,…,231n) And a corresponding second antenna (242)1，2422,…,242n) Are connected, and each filter unit (231)1，2312,…,231n) Are connected to the first antenna 241, each filtering unit (231)1，2312,…,231n) For filtering and outputting the corresponding second frequency band signal.
Specifically, a plurality of filter units (231)1，2312,…,231n) Corresponding to multiple second daysWire (242)1，2422,…,242n) I.e. the sum of the number of second antennas equals the number of filtering units. Each filtering unit (231)1，2312,…,231n) For outputting a corresponding one of the second frequency band signals. A plurality of filter units (231)1，2312,…,231n) And splicing the output multiple second frequency band signals and the second frequency bands corresponding to the multiple second frequency band signals to obtain the first frequency band. And a plurality of filter units (231)1，2312,…,231n) A plurality of filtering units (231) connected to the first antenna 241 at the same time1，2312,…,231n) Meanwhile, during operation, a first band signal may be output to the first antenna 241.
In one embodiment, as shown in fig. 2, the antenna module further includes: a combiner 250, a first end of the combiner 250 and a plurality of filtering units (231)1，2312,…,231n) A second terminal of the combiner 250 is connected to the first antenna 241 for connecting the plurality of filtering units (231)1，2312,…,231n) The output multiple second frequency band signals are combined and transmitted to the first antenna 241.
Specifically, the combiner 250 mainly functions to combine the input signals of multiple frequency bands together and output one signal. An input terminal of the combiner 250 and a plurality of filtering units (231)1，2312,…,231n) The output end of the combiner 250 is connected to the first antenna 241, and the combiner 250 is configured to combine multiple second frequency band signals into one first frequency band signal and transmit the first frequency band signal to the first antenna 241.
In one embodiment, as shown in fig. 2, the switch module 220 includes: and a filtering unit (231)1，2312,…,231n) A plurality of switch units (221) with the same number1，2212,…,221n) Each switch unit (221)1，2212,…,221n) Is arranged at the corresponding filtering unit (231)1，2312,…,231n) And a plurality of switch units (221) on the path of the RF processing module 2101，2212,…,221n) Anda plurality of filter units (231)1，2312,…,231n) One-to-one correspondence, each switch unit (221)1，2212,…,221n) For switching on or off the corresponding filter unit (231)1，2312,…,231n) The path to the RF processing module 210, such as the switch unit 2211For switching on or off the corresponding filtering unit 2311A path … between the RF processing module 210 and the switch unit 221nFor switching on or off the corresponding filtering unit 231nAnd the rf processing module 210.
In one embodiment, as shown in fig. 3, the filtering module 330 includes: the first end of the first filtering unit 331 is connected to the rf processing module 310, the second end of the first filtering unit 331 is connected to the first antenna 341, and the first filtering unit 331 is configured to perform noise filtering processing on the rf communication signal in the first frequency band received by the first antenna 341 and output the filtered signal to the rf processing module 310, and may also be configured to perform noise filtering processing on the rf communication signal in the first frequency band output by the rf processing module 310 and output the noise filtered signal to the first antenna 341. A plurality of second filtering units (332)1，3322,…,332n) And a first terminal connected to the rf processing module 310, each second filtering unit (332)1，3322,…,332n) And a corresponding second antenna (342)1，3422,…,342n) Connected, each second filter unit (332)1，3322,…,332n) For filtering and outputting the corresponding second frequency band signal.
In one embodiment, the antenna module further includes: and the combiner is connected with the first filtering unit and the first antenna at two ends respectively and is used for combining the multi-channel first frequency band signals output by the first filtering unit and then transmitting the combined multi-channel first frequency band signals to the first antenna.
Specifically, the combiner mainly functions to combine the input signals of multiple frequency bands together and output one signal. The input end of the combiner is connected with the first filtering unit, the output end of the combiner is connected with the first antenna, and the combiner is used for combining the multiple paths of second frequency band signals output by the first filtering unit into one path of first frequency band signal and transmitting the one path of first frequency band signal to the first antenna.
In one embodiment, as shown in fig. 4, the switch module 420 includes: and a second filtering unit (432)1，4322,…,432n) A plurality of uniform number of double pole double throw switch units (421)1，4212,…,421n) Each of the switch units 421iThe radio frequency processing module (i is more than or equal to 1 and less than or equal to n) comprises three ends, the first end and the second end can be controlled to be closed or opened, and the third end is connected with the radio frequency processing module 410. Each switch unit 421iA first terminal (i is more than or equal to 1 and less than or equal to n) is connected with the first filter unit 431, and a second terminal is connected with the corresponding second filter unit 432iAnd (4) connecting. I.e. the first switching unit 4211And a first terminal and a first filter unit 431 and a second terminal and a corresponding second filter unit 4321Connect, an nth switch unit 421nAnd a first terminal and a first filter unit 431 and a second terminal and a corresponding second filter unit 432nAnd (4) connecting. Each switch unit (421)1，4212,…,421n) Are connected with the rf processing module 410, and the switch unit 421iA switch unit 421 for turning on or off a path between the first filter unit 431 and the rf processing module 410iAnd also for switching on or off the corresponding second filtering unit 432iAnd the rf processing module 410.
In one embodiment, as shown in fig. 5, the switch module 520 includes: a first switch 521 and a plurality of second switches 5221，5222,…,522n). Two ends of the first switch 521 are respectively connected to the filtering module 530 and the radio frequency communication module 510, and the first switch 521 is used to control connection or disconnection of a path between the radio frequency communication module 510 and the first antenna 541. Each second switch 522i(i is more than or equal to 1 and less than or equal to n) are respectively connected with the filtering module 530 and the radio frequency communication module 510 and used for controlling the corresponding second antenna 542i(i is more than or equal to 1 and less than or equal to n) and the radio frequency communication module 510. For example, the first second switch 5221For controlling the firstSecond antenna 5421An nth second switch 522 connected to or disconnected from the rf communication module 510nFor controlling the nth second antenna 542nAnd is connected or disconnected with the rf communication module 510.
The application provides an antenna adaptation method, as shown in fig. 6, the antenna adaptation method includes: step 602, obtaining user requirements, where the user requirements include: determining the number N of target antennas, wherein the number of the target antennas is less than or equal to the number of the first antennas and the number of the second antennas; step 602, when N is equal to the number of the first antennas, taking the first antennas as target antennas; step 604, when N is greater than the first antennas and less than the number of the second antennas, taking the first antennas as target antennas, and selecting N-1 antennas from the plurality of second antennas as target antennas; and step 604, when the N is equal to the number of the second antennas, taking each second antenna as a target antenna.
Specifically, the user requirements are obtained, and the number N of target antennas required by the communication module adapted to the antenna module is determined, where the number N of target antennas is less than or equal to the sum of the numbers of the first antennas and the second antennas. If the number N of the target antennas required by the communication module is greater than the sum of the number of the first antennas and the number of the second antennas, the identification antenna module is not matched with the communication module. When the number N of target antennas required by the communication module is equal to the number of the first antennas, selecting the first antennas with wider frequency bands as the target antennas; when N is larger than the number of the first antennas but smaller than the number of the second antennas, the target antennas are the first antennas and N-1 second antennas, and the N-1 second antennas are selected from a plurality of second antennas according to antenna performance such as gain, signal-to-noise ratio or frequency band matching degree; and when the N is equal to the number of the second antennas, directly taking the plurality of second antennas as target antennas.
In one embodiment, the user requirements include: and determining the frequency band corresponding to each target antenna. The step of selecting N-1 of the first antennas as target antennas and the second antennas comprises: and taking the first antenna as a target antenna corresponding to the widest frequency band. And selecting N-1 second antennas from the plurality of second antennas as target antennas according to the matching degree of the frequency band corresponding to the target antenna and the plurality of second frequency bands.
Specifically, when N is greater than the number of the first antennas but less than the number of the second antennas, the target antennas are the first antenna and N-1 second antennas, and the selection criterion for selecting the N-1 second antenna from the plurality of second antennas may be that, according to frequency band information of a desired antenna of the communication module to be adapted, which is included in user requirements, the matching degree of the frequency band of each second antenna and the frequency band information of the desired antenna of the communication module to be adapted is obtained, and each antenna is sorted according to the matching degree from large to small, from which the first N-1 second antennas are selected as the target antennas.
Above-mentioned antenna module and antenna adaptation method, antenna module includes: the method comprises the following steps: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence. The radio frequency processing module is used for processing a first frequency band signal, and the first frequency band comprises: a plurality of second frequency bands. And the switch module is used for switching on or off a path between the filtering module and the radio frequency processing module. And the filtering module is used for filtering the radio-frequency signals output by the radio-frequency processing module when the switch module is switched on so as to output the first frequency band signals and/or the plurality of second frequency band signals to the antenna module, and is also used for filtering the radio-frequency signals received by the antenna module so as to output the first frequency band signals and/or the plurality of second frequency band signals to the radio-frequency processing module. The antenna module includes: the first antenna is used for receiving and transmitting the first frequency band signal. And each second antenna is used for receiving or transmitting a corresponding second frequency band signal. The antenna module in the scheme of the application can select any number of antennas from the antenna module through the control of the switch module and the filtering module, and the antenna module is strong in compatibility, simple in design and low in cost.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An antenna module, comprising: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence;
the radio frequency processing module is configured to process a first frequency band signal, where the first frequency band includes: a plurality of second frequency bands;
the switch module is used for switching on or off a path between the filtering module and the radio frequency processing module;
the filtering module is configured to, when the switch module is turned on, perform filtering processing on the radio frequency signal output by the radio frequency processing module to output the first frequency band signal and/or the plurality of second frequency band signals to the antenna module, and further perform filtering processing on the radio frequency signal received by the antenna module to output the first frequency band signal and/or the plurality of second frequency band signals to the radio frequency processing module;
the antenna module includes:
a first antenna for receiving and transmitting the first frequency band signal;
a plurality of second antennas, each of which is used for receiving or transmitting a corresponding second frequency band signal;
the filtering module comprises a plurality of filtering units, a first end of each filtering unit is connected with the radio frequency processing module through the switch module, a second end of each filtering unit is connected with the corresponding second antenna, the second end of each filtering unit is connected with the first antenna, and each filtering unit is used for filtering and outputting a corresponding second frequency band signal;
the switch module comprises a plurality of switch units with the same number as the filter units, each switch unit is arranged on the corresponding path of the filter unit and the radio frequency processing module, the switch units are in one-to-one correspondence with the filter units, and each switch unit is used for switching on or off the corresponding path between the filter unit and the radio frequency processing module.
2. The module of claim 1, wherein the antenna module further comprises:
and the first end of the combiner is respectively connected with the plurality of filtering units, and the second end of the combiner is connected with the first antenna and is used for combining and transmitting the plurality of paths of second frequency band signals output by the plurality of filtering units to the first antenna.
3. An antenna module, comprising: the radio frequency processing module, the switch module, the filtering module and the antenna module are connected in sequence;
the radio frequency processing module is configured to process a first frequency band signal, where the first frequency band includes: a plurality of second frequency bands;
the switch module is used for switching on or off a path between the filtering module and the radio frequency processing module;
the filtering module is configured to, when the switch module is turned on, perform filtering processing on the radio frequency signal output by the radio frequency processing module to output the first frequency band signal and/or the plurality of second frequency band signals to the antenna module, and further perform filtering processing on the radio frequency signal received by the antenna module to output the first frequency band signal and/or the plurality of second frequency band signals to the radio frequency processing module;
the antenna module includes:
a first antenna for receiving and transmitting the first frequency band signal;
a plurality of second antennas, each of the second antennas being used for receiving or transmitting a corresponding second frequency band signal,
the filtering module includes:
a first end of the first filtering unit is connected with the radio frequency processing module, and a second end of the first filtering unit is connected with the first antenna, and is used for performing noise filtering processing on the radio frequency communication signal in the first frequency band received by the first antenna;
a plurality of second filtering units, a first end of each second filtering unit is connected with the radio frequency processing module, a second end of each second filtering unit is connected with a corresponding second antenna, and each second filtering unit is used for filtering and outputting a corresponding second frequency band signal;
the switch module comprises a plurality of double-pole double-throw switch units with the same number as the second filtering units, and a first end and a second end of each switch unit are respectively connected with the first filtering unit and the corresponding second filtering unit; and the third end is connected with the radio frequency processing module, and each switch unit is used for switching on or switching off a path where the first filtering unit and/or the corresponding second filtering unit are located.
4. The module of claim 3, wherein the antenna module further comprises:
and the combiner is connected with the first filtering unit and the first antenna at two ends respectively, and is used for combining the multiple paths of first frequency band signals output by the first filtering unit and then transmitting the combined signals to the first antenna.
5. The module according to claim 3, wherein the first frequency band and the second frequency band comprise full frequency bands covering low, medium, and high frequencies, respectively.
6. An antenna adaptation method, which is applied to the antenna module set of any one of claims 1-5; the method comprises the following steps:
acquiring user requirements, wherein the user requirements comprise: determining the number N of target antennas, wherein the number of the target antennas is less than or equal to the sum of the numbers of the first antennas and the second antennas;
when N is equal to the number of the first antennas, taking the first antennas as the target antennas;
when N is greater than the first antenna and less than the number of the second antennas, regarding the first antenna as the target antenna, and selecting N-1 from a plurality of the second antennas as the target antenna;
and when N is equal to the number of the second antennas, taking each second antenna as the target antenna.
7. The method of claim 6, wherein the user requirements comprise: determining a frequency band corresponding to each target antenna;
the selecting the first antenna as the target antenna and N-1 from a plurality of the second antennas as the target antenna comprises:
taking the first antenna as a target antenna corresponding to the widest frequency band;
and selecting N-1 second antennas from the plurality of second antennas as the target antenna according to the matching degree of the frequency band corresponding to the target antenna and the plurality of second frequency bands.
8. The method according to claim 7, wherein the selecting N-1 antennas from the plurality of second antennas as the target antenna according to matching degrees between the frequency band corresponding to the target antenna and the plurality of second frequency bands comprises:
and obtaining the matching degree of the frequency band of each second antenna and the frequency band corresponding to the target antenna, sequencing each second antenna according to the matching degree from large to small, and selecting the first N-1 second antennas as the target antennas.
9. The method of claim 6, further comprising:
and if the number N of the target antennas is greater than the sum of the number of the first antennas and the number of the second antennas, identifying that the antenna module is not matched with the communication module.
10. The method of claim 6, wherein said selecting N-1 of the plurality of second antennas as the target antenna comprises:
and selecting N-1 second antennas from the plurality of second antennas as the target antennas according to the gain, the signal-to-noise ratio or the frequency band matching degree.
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