CN109473782B - Antenna and method for realizing multi-output-port common antenna - Google Patents
Antenna and method for realizing multi-output-port common antenna Download PDFInfo
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- CN109473782B CN109473782B CN201811088830.9A CN201811088830A CN109473782B CN 109473782 B CN109473782 B CN 109473782B CN 201811088830 A CN201811088830 A CN 201811088830A CN 109473782 B CN109473782 B CN 109473782B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The invention relates to an antenna and a method for realizing a multi-output-port common antenna, wherein the antenna comprises an antenna main body, a power division filter network and a plurality of output ports, the antenna main body, the power division filter network and the output ports are sequentially connected, and the antenna main body is used for transmitting signals; the power division filter network is used for grouping and filtering signals transmitted by the antenna main body according to frequency bands to obtain signals of at least one frequency band; and the output ports are used for outputting signals which are grouped and filtered by the power division filter network according to the frequency band and then output to the external devices. The method for realizing the multi-output-port common antenna is used for realizing the multi-output-port common antenna. By adopting the antenna and the power division filter network, the antenna main body can be shared by a plurality of output ports, the space of the antenna is saved to the maximum extent, and the performance and the appearance size of the whole antenna are considered.
Description
Technical Field
The invention relates to the technical field of communication, in particular to the field of multi-output-port common antennas, and specifically relates to an antenna and a method for realizing the multi-output-port common antenna.
Background
With the rapid advance of industrial design technology and the rapid change of aesthetic concepts, the requirement for the size of the terminal ID is more and more demanding, and the size of the available space of the antenna as one of the necessary components for wireless communication is also smaller and smaller.
The prior art can only realize that one antenna main body corresponds to one output port within a limited size range, and can only realize single-port output of a certain frequency under the same size; or in a limited size range, a plurality of independent antenna units are adopted, a plurality of output ports are correspondingly arranged, the mutual influence is large, and the use effect is poor.
How to enable one antenna main body to be connected to a plurality of output ports simultaneously, so as to realize a multi-output-port common antenna within a limited size range and take mutual influence among the plurality of output ports into consideration is a problem to be solved in the field.
Disclosure of Invention
The invention aims to provide an antenna and a method for realizing a multi-output-port common antenna, which can ensure that one antenna main body can be simultaneously connected to a plurality of output ports, realize the multi-output-port common antenna in a limited size range and give consideration to the mutual influence among the plurality of output ports.
In order to solve the above technical problem, the present invention provides an antenna, including an antenna main body, a power division filter network, and a plurality of output ports; the antenna main body is used for transmitting signals; the power division filter network is connected with the antenna main body and is used for grouping and filtering signals transmitted by the antenna main body according to frequency bands; the plurality of output ports are connected with the power division filter network and used for outputting signals grouped and filtered by the power division filter network according to frequency bands to a plurality of external devices.
Optionally, the power division filter network includes a power division part and a plurality of filter parts; the plurality of filtering parts are connected with the power dividing part; the power division part is used for grouping signals transmitted by the antenna main body according to frequency bands to obtain signals of at least one frequency band, comprises a power division main port and a plurality of power division ports, is connected to the antenna main body through the power division main port, and is correspondingly connected to the plurality of filtering parts through the plurality of power division ports; and the filtering part is used for filtering the signals output from the power division ports according to the frequency band of the signals.
Optionally, the power division filtering network is correspondingly connected to a plurality of output ports through the plurality of filtering portions.
Optionally, the filtering part comprises a band-pass filter.
Optionally, the pass band and the stop band of the band pass filter are set according to the frequency band of the signal output by the power division port to which the band pass filter is connected.
Optionally, the output port is an SMA radio frequency output port.
The invention also provides a method for realizing the multi-output-port common antenna, which comprises the following steps: transmitting a signal through an antenna body; grouping and filtering signals transmitted by the antenna main body according to frequency bands to obtain signals of at least one frequency band; and outputting the signals grouped and filtered according to the frequency bands to a plurality of external devices.
Optionally, the method for grouping and filtering signals transmitted by the antenna main body according to frequency bands further includes: and grouping and filtering signals transmitted by the antenna main body according to frequency bands through a power division filtering network connected to the antenna main body.
Optionally, the power division filter network includes a power division part and a plurality of filter parts; the plurality of filtering parts are connected with the power dividing part; grouping signals transmitted by the antenna main body according to frequency bands through the power division part to obtain signals of at least one frequency band, wherein the power division part comprises a power division main port and a plurality of power division ports, is connected to the antenna main body through the power division main port, and is correspondingly connected to the plurality of filtering parts through the plurality of power division ports; and filtering the signals output from the power division ports through the filtering part according to the frequency band of the signals.
Optionally, the filtering part includes a band-pass filter, through the band-pass filter is to coming from the merit and dividing the signal of port output, according to signal place frequency band filters, just band-pass filter's passband and stopband foundation band-pass filter is connected to the merit divides the place frequency band of the signal of port output to set up.
Optionally, the method for outputting signals grouped and filtered according to frequency bands to a plurality of external devices further includes: and outputting signals grouped and filtered according to frequency bands to a plurality of external devices through a plurality of radio frequency output ports, wherein the signal output by each radio frequency output port to the external devices is one of the signals of at least one frequency band.
According to the antenna and the method for realizing the multi-output-port common antenna, the power division filter network is connected to one antenna main body, and the power division filter network is connected to the plurality of output ports, so that the plurality of output ports can share one antenna main body, one or more signals of different frequency bands are output through the plurality of output ports connected to the antenna main body, the purpose of saving the antenna space to the maximum extent is achieved, the antenna performance and the overall appearance size are considered, and further, because the power division filter network comprises the power division part and the filter part, and the filter part comprises the filter, out-of-band signals can be filtered through the filter, signals obtained by the output ports are purer, and the mutual influence among the plurality of output ports is smaller.
Drawings
Fig. 1 is a block diagram of a connection structure of an antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an antenna according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a power division system of an antenna according to a first embodiment, which groups and outputs signals with different frequencies;
fig. 4 is a schematic step diagram of a method for implementing a multi-output-port co-antenna according to an embodiment of the present invention.
In the figure: 101-an antenna body; 105-an output port; 106-power division filter network; 107-external equipment; 201-an antenna body; 202-power division part; 203-power division ports; 204-a filtering part; 205-output port; 207-power division main port; 305-an output port; 306-a power division filter network; 307-power division main port.
Detailed Description
The following describes an implementation method of an antenna and a multi-output port co-antenna according to the present invention in detail with reference to the accompanying drawings and the detailed description. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Referring to fig. 1, an embodiment of the present invention provides an antenna for implementing one-way demultiplexing of rf paths. The antenna of this embodiment includes an antenna main body 101, a power division filter network 106, and a plurality of output ports 105; the antenna main body 101 is used for transmitting signals; the power division filter network 106 is connected to the antenna main body 101, and is configured to group and filter signals transmitted by the antenna main body 101 according to frequency bands, so as to obtain signals of at least one frequency band; the output ports 105 are connected to the power division filter network, and are configured to output signals grouped and filtered by the power division filter network according to frequency bands to a plurality of external devices. In a specific embodiment, the frequency band of the signal output by each output port may be different from the frequency bands of the signals output by other output ports, or may be the same as the frequency bands of the signals output by other output ports.
In a specific embodiment, the signal required by each external device should correspond to a specific frequency band, and the specific frequency band should belong to one of the signals of the at least one frequency band. Preferably, the antenna body 101, the power division filter network 106 and the plurality of output ports 105 are provided in the antenna.
Referring to fig. 2, in the embodiment shown in fig. 2, the power division filter network includes a power division part 202 and a plurality of filter parts 204 to which the power division part 202 is connected, and the power division part 202 is connected to the antenna main body 201 through a power division main port 207 and correspondingly connected to the plurality of filter parts 204 through a plurality of power division ports 203; the power dividing portion 202 is configured to group signals transmitted by the antenna main body 201 according to frequency bands, and obtain signals of at least one frequency band; the filtering portion 204 is configured to filter, according to a frequency band in which a signal is located, a signal output by the power division port 203 to which the filtering portion 204 is connected, where the power division filtering network is correspondingly connected to the plurality of output ports 205 through the plurality of filtering portions 204.
In the embodiment shown in fig. 2, the number of the power dividing ports 203 is equal to the number of the filtering portions 204, and is equal to the number of the output ports 205. In a specific embodiment, the number of the power dividing ports 203 and the number of the filtering portions 204 may be greater than the number of the output ports 205.
In the specific embodiment shown in fig. 2, the power dividing portion 202 selects a corresponding frequency band component transmitted in the antenna main body 201 according to a frequency band requirement of each output port 205, so that all or most of energy of a signal of the frequency component is output through the output port 205, if one of the first output ports requires a signal with a frequency a, the signal with the frequency a in the antenna main body 201 is selected by the power dividing portion 202 and is transmitted to the first filtering portion through the first power dividing port, the first filtering portion filters out an out-of-band signal except the frequency a, so that signals in other frequency bands cannot pass through, and the filtered signal is output to the first output port.
In a specific embodiment, the power dividing part may be a customized IC package chip, which is customized according to an actual frequency range, so that different pins output signals of various frequency bands grouped according to frequency bands; the power division part can also be built by microstrip lines and lumped elements. And the efficiency and gain attenuation of the signal output by each output port can be controlled within a specific range, such as within 1dB, by controlling the power division part, and the filtering part is a filtering circuit.
In a specific implementation manner, the filtering portion includes a band-pass filter, and the pass band and the stop band of the band-pass filter are set according to the frequency band where the signal output by the power division port is connected to, so that the frequency band of the signal output by the output port is consistent with the frequency band of the signal output by the power division port, and clutter is filtered. The filtering portion may also include a low-pass filter or a high-pass filter, as long as the filter can filter out a signal that is inconsistent with the frequency band of the current signal, and is not limited to the above-mentioned band-pass filter.
Referring to fig. 3, in the embodiment shown in fig. 3, the frequency range of the signal transmitted in the antenna body ranges from F1 to Fn, the power division filtering network 306 groups and filters the signal transmitted in the antenna body by frequency bands through the power division main port 307, and obtains signals with frequencies of F1 and F2 … … Fn respectively, and outputs the signals through the plurality of output ports 305, and each output port 305 outputs a signal with one frequency.
In a specific embodiment, the frequency bands of the signals output by the plurality of output ports in one antenna may be the same or different, and are not limited to the output ports outputting signals with different frequencies described in fig. 3.
And in a specific embodiment, the output port is an SMA radio frequency output port. The output port can also be a TNC radio frequency output port or an MMCX radio frequency output port and the like, and is not limited to the SMA radio frequency output port stated above.
In the above technical solution, the number of the output ports is multiple, and the frequency, gain, and efficiency of each output port may be the same or different, and may be determined according to the requirement of the whole device. The antenna main body is also selected according to the specific index requirements of the whole antenna of the antenna, so that the antenna main body can meet the requirements of sufficient gain, efficiency and the like in the required frequency range. The antenna in the technical scheme realizes that one antenna main body is correspondingly connected with a plurality of output ports, and realizes one path of radio frequency path division and multi-path division on the limited size.
Referring to fig. 4, an embodiment of the present invention further provides a method for implementing a multi-output-port co-antenna, including steps S41 to S43.
Step S41: signals are transmitted through one antenna body.
Step S42: and grouping and filtering the signals transmitted by the antenna main body according to frequency bands to obtain signals of at least one frequency band.
In a specific embodiment, the step S42 further includes: and grouping and filtering signals transmitted by the antenna main body according to frequency bands through a power division filtering network connected to the antenna main body.
In a specific implementation manner, the power division filter network includes a power division portion and a plurality of filter portions, the plurality of filter portions are connected to the power division portion, the power division portion includes a power division main port and a plurality of power division ports, and is connected to the antenna main body through the power division main port and is correspondingly connected to the plurality of filter portions through the plurality of power division ports. The grouping of the signals according to the frequency band in the step S42 is: and grouping the signals transmitted by the antenna main body according to frequency bands through the power division part to obtain signals of at least one frequency band. The filtering in step S42 is: and filtering the signals output from the power division ports through the filtering part according to the frequency band of the signals.
In a specific embodiment, the filtering part filters the received signal to filter out the unwanted out-of-band signal. If the first power division port is connected to the first output port through the first filtering portion, the first output port should output a signal in the frequency band a, therefore, the signal in the frequency band a that is output by the first power division port should be segmented by the power division portion according to the frequency band, the first filtering portion should filter out an out-of-band signal in the frequency band a, and the first output port should output the signal in the frequency band a to the external device.
In a specific implementation manner, the filtering portion includes a band-pass filter, and a pass band and a stop band of the band-pass filter are set according to a frequency band where a signal output by the power splitting port to which the band-pass filter is connected is located, and the filtering in step S42 further includes: and filtering the signals output from the power division ports through the band-pass filter according to the frequency band of the signals.
In a specific embodiment, the filtering portion may also include a low-pass filter or a high-pass filter, as long as the filter can filter out signals that are inconsistent with the frequency band of the current signal, and is not limited to the above-mentioned band-pass filter.
Step S43: and outputting the signals grouped and filtered according to the frequency bands to a plurality of external devices.
In a specific embodiment, the plurality of rf output ports are connected to the antenna main body through a power division filter network, and output signals grouped and filtered by frequency bands through the power division filter network. The step S43 further includes: and outputting signals grouped and filtered according to frequency bands to a plurality of external devices through a plurality of radio frequency output ports, wherein the signal output by each radio frequency output port to the external devices is one of the signals of at least one frequency band.
In a specific embodiment, the signal required by each external device should correspond to a specific frequency band, and the specific frequency band should belong to one of the signals of the at least one frequency band.
According to the antenna and the method for realizing the multi-output-port common antenna, the power division filter network is connected to one antenna main body, and the power division filter network is connected to the plurality of output ports, so that the plurality of output ports can share one antenna main body, one or more signals of different frequency bands are output through the plurality of output ports connected to the antenna main body, the purpose of saving the antenna space to the maximum extent is achieved, the antenna performance and the overall appearance size are considered, and further, because the power division filter network comprises the power division part and the filter part, and the filter part comprises the filter, out-of-band signals can be filtered through the filter, signals obtained by the output ports are purer, and the mutual influence among the plurality of output ports is smaller.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An antenna is characterized by comprising an antenna main body, a power division filter network and a plurality of output ports;
the antenna main body is used for transmitting signals;
the power division filter network is connected with the antenna main body and is used for grouping and filtering signals transmitted by the antenna main body according to frequency bands; the power division filter network comprises a power division part and a plurality of filter parts; the plurality of filtering parts are connected with the power dividing part; the power division part selects corresponding frequency band components transmitted in the antenna main body according to the frequency band requirements of each output port, and is used for grouping signals transmitted by the antenna main body according to frequency bands to obtain signals of at least one frequency band, wherein the signals comprise a power division main port and a plurality of power division ports, are connected to the antenna main body through the power division main port, and are correspondingly connected to the plurality of filtering parts through the plurality of power division ports; the filtering part is used for filtering the signals output from the power division ports according to the frequency band of the signals; the power division part can be a customized IC packaging chip which is customized according to the actual frequency range, so that different pins output signals of various frequency bands grouped according to the frequency bands; the power division part can also be built by a microstrip line and a lumped element;
the output ports are connected with the power division filter network and used for outputting signals grouped and filtered by the power division filter network according to frequency bands to a plurality of external devices; the frequency, gain and efficiency of each output port are determined according to the requirements of the whole machine.
2. The antenna of claim 1, wherein the power division filter network is connected to a plurality of output ports via the plurality of filter sections.
3. The antenna of claim 1, wherein the filtering portion comprises a band-pass filter, and a pass band and a stop band of the band-pass filter are set according to a frequency band of a signal output by the power splitting port to which the band-pass filter is connected.
4. The antenna of claim 1, wherein the output port is an SMA radio frequency output port.
5. A method for realizing a multi-output-port common antenna is characterized by comprising the following steps:
transmitting a signal through an antenna body;
grouping and filtering signals transmitted by the antenna main body according to frequency bands through a power division filtering network connected to the antenna main body to obtain signals of at least one frequency band; the power division filter network comprises a power division part and a plurality of filter parts; the plurality of filtering parts are connected with the power dividing part; the power division part selects corresponding frequency band components transmitted in the antenna main body according to the frequency band requirements of each output port, and is used for grouping signals transmitted by the antenna main body according to frequency bands to obtain signals of at least one frequency band; the power division part comprises a power division main port and a plurality of power division ports, is connected to the antenna main body through the power division main port, and is correspondingly connected to the plurality of filtering parts through the plurality of power division ports; the filtering part is used for filtering the signals output from the power division ports according to the frequency band of the signals; the power division part can be a customized IC packaging chip which is customized according to the actual frequency range, so that different pins output signals of various frequency bands grouped according to the frequency bands; the power division part can also be built by a microstrip line and a lumped element; outputting signals grouped and filtered according to frequency bands to a plurality of external devices; the frequency, gain and efficiency of each output port are determined according to the requirements of the whole machine.
6. The method according to claim 5, wherein the filtering portion includes a band-pass filter, the band-pass filter filters the signal from the power splitting port according to a frequency band of the signal, and a pass band and a stop band of the band-pass filter are set according to the frequency band of the signal from the power splitting port to which the band-pass filter is connected.
7. The method of claim 5, wherein the step of outputting the signals grouped and filtered according to frequency bands to the plurality of external devices further comprises: and outputting signals grouped and filtered according to frequency bands to a plurality of external devices through a plurality of radio frequency output ports, wherein the signal output by each radio frequency output port to the external devices is one of the signals of at least one frequency band.
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| CN104539329B (en) * | 2014-12-11 | 2018-07-03 | 上海华为技术有限公司 | A kind of antenna and active antenna system |
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| CN101634704A (en) * | 2009-07-16 | 2010-01-27 | 南京瑞德通讯技术有限公司 | Target simulator of external field of radar adopting carrier wave extraction video storage method |
| CN102798840A (en) * | 2012-08-14 | 2012-11-28 | 西安电子科技大学 | Broadband channelization reception system of radar with external radiation source and FPGA (Field Programmable Gate Array) implementation method |
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