CN109361415A - Harmonic suppressing method, Transmit Receive Unit and the terminal device of Transmit Receive Unit - Google Patents
Harmonic suppressing method, Transmit Receive Unit and the terminal device of Transmit Receive Unit Download PDFInfo
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- CN109361415A CN109361415A CN201811467206.XA CN201811467206A CN109361415A CN 109361415 A CN109361415 A CN 109361415A CN 201811467206 A CN201811467206 A CN 201811467206A CN 109361415 A CN109361415 A CN 109361415A
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- 238000001914 filtration Methods 0.000 claims abstract description 81
- 210000004209 hair Anatomy 0.000 claims description 4
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- 230000003321 amplification Effects 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
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- 230000006870 function Effects 0.000 description 2
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Classifications
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
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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
- H04B1/0053—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 common antenna for more than one band
- H04B1/0057—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 common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The invention discloses a kind of harmonic suppressing method of Transmit Receive Unit, Transmit Receive Unit and terminal device, a kind of Transmit Receive Unit includes: power amplifier, branch switch, combining switch, at least two transmitting filtering links, duplexer and receives link；At least two transmitting filtering links are parallel between branch switch and combining switch, and each transmitting filtering link includes at least one emission filter, and the working frequency range of each transmitting filtering link is different；Power amplifier is connect with branch switch, and combining switch is connect with duplexer, and duplexer is also connect with receives link.Harmonic suppressing method, Transmit Receive Unit and the terminal device of Transmit Receive Unit disclosed by the invention, for inhibiting to higher hamonic wave in broadband wireless communications.
Description
Technical field
The present embodiments relate to wireless communication technique more particularly to a kind of harmonic suppressing method of Transmit Receive Unit,
Transmit Receive Unit and terminal device.
Background technique
With the development of wireless communication technique, the wireless communication needs of terminal device are higher and higher, wherein in order to improve end
The wireless data transmission speed of end equipment, it is necessary to which terminal device supports broader communication bandwidth.
In traditional terminal device, the wireless communication signals emitted needed for terminal device need to pass sequentially through amplifier,
It is issued after emission filter, duplexer and antenna.But when bandwidth of operation is wider, the wireless signal of terminal device transmitting
In, the higher hamonic wave of low frequency signals may be fallen in bandwidth of operation simultaneously, and the emission filter of a wideband is also difficult pair
Higher hamonic wave is effectively inhibited.
In the prior art, to solve the above-mentioned problems, it is only capable of designing the Transmit Receive Unit of multiple narrow frequencies, to be terminal
Equipment is spliced into the wireless communication system of wideband.But multiple Transmit Receive Unit will increase the cost of terminal device, in addition, also needing
Limited space in occupied terminal equipment is wanted, the lightening design of terminal device is unfavorable for.
Summary of the invention
The present invention provides the harmonic suppressing method, Transmit Receive Unit and terminal device of a kind of Transmit Receive Unit, with right
Higher hamonic wave is inhibited in broadband wireless communications.
In a first aspect, the embodiment of the present invention provides a kind of Transmit Receive Unit, comprising:
Power amplifier, branch switch, combining switch, at least two transmitting filtering links, duplexer and receives link；
At least two transmitting filtering links are parallel between branch switch and combining switch, and each transmitting filtering link includes
The working frequency range of at least one emission filter, each transmitting filtering link is different；
Power amplifier is connect with branch switch, combining switch connect with duplexer, duplexer also with receives link
Connection；
Power amplifier is for amplifying wireless signal to be sent, and branch switch and combining switch are for according to emission control
Instruction filters link connection from different transmittings, so as to be opened after the amplification that wireless signal to be sent passes through power amplifier by branch
Output is closed to duplexer, wherein the frequency of wireless signal to be sent is in the transmitting filter of branch switch and combining switch connection
The working frequency range of wave link；
Duplexer, with combining switch connection, will be combined the nothing to be sent of switch input for instructing according to emission control
Line signal is emitted by the antenna connecting with duplexer.
In a kind of possible implementation of first aspect, duplexer is also used to connect when the antenna connecting with duplexer
When receiving wireless signal to be received, it is connect according to control instruction is received with receives link；
Branch switch and combining switch are also used to be closed according to reception control instruction and at least one transmitting filtering link
Connection.
In a kind of possible implementation of first aspect, branch switch and combining switch, specifically for receiving
After receiving control instruction, the connection at least one transmitting filtering link is closed within a preset time.
In a kind of possible implementation of first aspect, receives link includes receiving filter and low-noise amplifier,
Duplexer is circulator.
In a kind of possible implementation of first aspect, the interface quantity of branch switch and combining switch is greater than at least two
The quantity of a transmitting filtering link.
In a kind of possible implementation of first aspect, each transmitting filtering link includes at least two transmitting filtering
Device.
Second aspect, the embodiment of the invention also provides a kind of terminal devices, comprising: terminal device main body, radio-frequency receiving-transmitting
Unit, antenna；
Transmit Receive Unit and antenna are set in terminal device main body,
By emitting after Transmit Receive Unit and antenna, antenna receives the wireless signal to be sent that terminal device main body generates
To wireless signal terminal device main body is transmitted to by Transmit Receive Unit；
Transmit Receive Unit includes such as the Transmit Receive Unit in any possible implementation of first aspect.
The third aspect, the embodiment of the invention also provides a kind of harmonic suppressing method of Transmit Receive Unit, applied to penetrating
Frequency Transmit-Receive Unit, Transmit Receive Unit include:
Power amplifier, branch switch, combining switch, at least two transmitting filtering links, duplexer and receives link；
At least two transmitting filtering links are parallel between branch switch and combining switch, and each transmitting filtering link includes
The working frequency range of at least one emission filter, each transmitting filtering link is different；
Power amplifier is connect with branch switch, and duplexer is connect with combining switch and receives link respectively；
This method comprises:
According to the frequency of wireless signal to be sent, frequency range locating for wireless signal to be sent is determined；
It controls branch switch and combining switch is opened to transmitting filter chain corresponding with frequency range locating for wireless signal to be sent
Road and duplexer are switched to be connected with combining switch, so that wireless signal to be sent is opened by power amplifier, branch
Close, the corresponding transmitting filtering link of frequency range locating for wireless signal to be sent, combining switch, after duplexer by with duplexer
The antenna of connection emits.
In a kind of possible implementation of the third aspect, this method further include:
When the antenna connecting with duplexer receives wireless signal, control duplexer is connect with receives link, and
It controls branch switch and combining switch is closed.
In a kind of possible implementation of the third aspect, when the antenna connecting with duplexer receives wireless signal
When, control duplexer is connect with receives link, and controls branch switch and combining switch closing, comprising:
When the antenna connecting with duplexer receives wireless signal, control duplexer is connect with receives link, and
Control branch switch and combining switch are closed within a preset time.
Harmonic suppressing method, Transmit Receive Unit and the terminal device of Transmit Receive Unit provided in an embodiment of the present invention,
By designing branch switch, combining switch and at least two transmitting filtering links in transmitting terminal, enable Transmit Receive Unit
The wireless signal to be sent of the different frequency marked off for wideband selects different transmittings to filter link to be filtered, and leads to
The wideband wireless signal for merging the wireless signal zone of reduction to be sent transmitting of different frequency is crossed, is avoided since bandwidth of operation is wider
Caused by influence of the higher hamonic wave to wireless signal, use multiple narrowband moulds than in the prior art in order to inhibit higher hamonic wave
The scheme that block splices broadband system is at low cost, and assembling module is few, will not be to the terminal device system of the application Transmit Receive Unit
It has an impact.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of radio frequency unit in terminal device；
Fig. 2 is the structural schematic diagram of Transmit Receive Unit embodiment one provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of Transmit Receive Unit embodiment two provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of terminal device embodiment one provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the harmonic suppressing method embodiment one of Transmit Receive Unit provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
In order to realize two-way communication, radio frequency unit is required to be duplexing terminal device, that is to say, that needs while propping up
Hold the transmitting and reception of wireless signal.In terminal device generally using duplexer or circulator as transmitting and it is received every
From device, it is same wireless communication standard in a frequency range wireless signal by the same antenna carry out wireless signal transmitting with
It receives.Wherein radio frequency unit is as the transmitting-receiving entrance for carrying out wireless signal in terminal device, nothing of the performance to terminal device
Line communication capacity produces very big influence.
As shown in FIG. 1, FIG. 1 is the structural schematic diagrams of radio frequency unit in terminal device, wherein the power amplifier in radio frequency unit 11
12 connection filters 13, filter 13 are connect with duplexer 14, and duplexer 14 is also connect with antenna 15 and receives link 16.
It is necessary to have the generative capacities of wireless signal in order to realize wireless communication for terminal device, this generally relies on the base in terminal device
Tape cell is realized.The Base Band Unit of different wireless communication standard can produce the intermediate-freuqncy signal of respective wireless communication standard, then pass through
After crossing the frequency conversion of converter unit, wireless signal to be sent can be delivered to radio frequency unit 11.Power amplifier 12 in radio frequency unit 11 is treated
It sends after wireless signal amplifies, then after being filtered by filter 13, passes through duplexer 14 and antenna 15 is sent.Antenna 15
The wireless signal received is transmitted to receives link 16 after passing through duplexer 14, and receives link 16 passes through again after handling it
Base Band Unit progress subsequent processing is delivered to after crossing converter unit frequency conversion.Wherein generally comprised in receives link receiving filter,
The devices such as low-noise amplifier, specific structure and processing method can be using any structures and methods in the prior art.
Since the present invention be directed to the improvement that transmitting terminal of the radio frequency unit to wireless signal carries out, not to the specific structure of receiving end
It is described in detail with processing method.It should be noted that duplexer 14 can also be realized using circulator.
For the transmitting terminal of radio frequency unit 11, since in traditional terminal device, using a transmission link, i.e., one is gone here and there
Capable link, whole working frequency range needed for needing the working frequency range of filter 13 to cover the radio frequency unit 11.For traditional
Standard is wirelessly communicated, due to working frequency range relative narrower, the performance of filter 13 can satisfy demand.But with wireless communication skill
The development of art, in order to adapt to more complicated changeable application scenarios, the requirement to radio frequency bandwidth is more and more wider, with working frequency range
Increase, the higher hamonic wave of low frequency signal will be in working frequency range, so that single filter 13 can not be filtered in working frequency range
Except higher hamonic wave.Such as the wireless communication standard for being 300MHz-700MHz for working frequency range, 300MHz signal are produced in frequency conversion
Raw second harmonic will will be located in working frequency range in 600MHz or so.
In the prior art, it in order to solve the problems, such as above-mentioned higher hamonic wave, is only terminal device and designs penetrating for multiple narrowbands
Frequency Transmit-Receive Unit, but obviously will also increase cost in this way.In addition, multiple independent Transmit Receive Unit will be in occupied terminal equipment
Limited space, the increase of Transmit Receive Unit will also bring unpredictalbe risk and unstable to entire terminal device system
Property, also it is unfavorable for the expansion of bandwidth.
Fig. 2 is the structural schematic diagram of Transmit Receive Unit embodiment one provided in an embodiment of the present invention, as shown in Fig. 2, this
Embodiment provide Transmit Receive Unit include:
Power amplifier 21, branch switch 22, combining switch 23, transmitting filtering link 24, transmitting filtering link 25, transmitting
Filter link 26, duplexer 27 and receives link 28.Wherein, it is said so that three transmittings filter link as an example in the present embodiment
It is bright, but the quantity of the transmitting filtering link in Transmit Receive Unit provided by the present invention is not limited, transmitting filtering link
As long as quantity be greater than two, i.e., within the scope of the present invention.
Transmitting filtering link 24, transmitting filtering link 25, transmitting filtering link 26 is parallel to branch switch 22 and combining is opened
It closes between 23, each transmitting filtering link includes at least one emission filter, in the present embodiment, with each transmitting filter chain
Road for an emission filter including being illustrated, wherein transmitting filtering link 24 includes emission filter 241, and transmitting is filtered
Wave link 25 includes emission filter 261 including emission filter 251, transmitting filtering link 26.Transmitting filtering link 24, transmitting
Filter the working frequency range difference namely emission filter 241, emission filter 251, transmitting of link 25, transmitting filtering link 26
The working frequency range of filter 261 is different.
Power amplifier 21 is connect with branch switch 22, and combining switch 23 is connect with duplexer 27, and duplexer 27 is also
It is connect with receives link 28.In the present embodiment, duplexer 27 is opened with receives link 28 and the antenna in embodiment illustrated in fig. 1
Pass 14 and receives link 16 are identical, can be any duplexer and receives link in the prior art.
It is after power amplifier 21 handles Base Band Unit in terminal device and pending by being generated after converter unit frequency conversion
It send wireless signal to amplify, according to the frequency of wireless signal to be sent, can determine the corresponding transmitting filtering of wireless signal to be sent
Link, i.e., the frequency of wireless signal to be sent are in the working frequency range of which transmitting filtering link.Nothing to be sent is being determined
After the corresponding transmitting filtering link of line signal, the control unit in terminal device can be sent out to branch switch 22 and combining switch 23
It send emission control to instruct, branch switch 22 and combining switch 23 and the transmitting is made to filter link connection.Such as wireless communication to be sent
Number corresponding transmitting filtering link is transmitting filtering link 24, and material is thus formed power amplifier 21, branch switch 22, transmittings
Filter link 24, the wireless signal paths that combining switch 23 forms.By the amplified wireless communication to be sent of power amplifier
Number can by transmitting filtering link 24 filtering after be transmitted to duplexer 27.When terminal device sends wireless signal,
Duplexer 27 is controlled to be connect with combining switch 23, and wireless signal to be sent amplified in this way can pass through duplexer 27
The antenna of connection is launched, and realizes the transmitting of terminal device wireless signal.
It still, in the present embodiment, can be by three transmitting filter units by taking working frequency range is 300MHz-700MHz as an example
Working frequency range be separately designed as 300MHz-400MHz, 401MHz-500MHz, 501MHz-700MHz, such three frequency ranges
Second harmonic is respectively 600MHz-800MHz, 802MHz-1000MHz, 1002MHz-1400MHz, in this way each transmitting filtering
Narrow band filter is respectively adopted in unit, so that it may realize good harmonics restraint.
Due in the present embodiment, devising multiple transmitting filtering links, and the working frequency range of each transmitting filtering link
Difference, then the relative narrower that the bandwidth of operation of each transmitting filtering link can design, passes through control branch switch and conjunction
Way switch filters link connection from different transmittings, and the wireless signal for allowing terminal device to be sent is according to frequency by not
Same transmitting filtering link is filtered, and avoids the problem of second harmonic can not be filtered out.In addition, multiple transmitting filtering
The bandwidth of operation relative narrower of link, then the cost of emission filter therein will access control.Also, the present embodiment
The Transmit Receive Unit of offer is only to devise multiple transmittings filtering links, actually or a complete radio-frequency receiving-transmitting list
Member, while also avoiding the influence that multiple Transmit Receive Unit generate terminal device system.
Transmit Receive Unit provided in this embodiment, by designing branch switch, combining switch and at least two in transmitting terminal
A transmitting filters link, and the wireless signal to be sent that Transmit Receive Unit is the different frequency that wideband marks off is selected
Different transmitting filtering links are filtered, and the transmitting of the wireless signal zone of reduction to be sent by merging different frequency
Wideband wireless signal, avoid due to bandwidth of operation it is wider caused by influence of the higher hamonic wave to wireless signal, than existing skill
Use the scheme of multiple narrowband modules splicing broadband system at low cost to inhibit higher hamonic wave in art, assembling module is few, no
It can be had an impact to using the terminal device system of the Transmit Receive Unit.
Fig. 3 is the structural schematic diagram of Transmit Receive Unit embodiment two provided in an embodiment of the present invention, as shown in figure 3, this
For the Transmit Receive Unit that embodiment provides on the basis of Fig. 2, receives link 28 specifically includes receiving filter 281 and low noise
Amplifier 282.
In the present embodiment, a kind of possible structure is provided for receives link 28.Wherein receiving filter 281 is for filtering
Signal in addition to bandwidth of operation in the signal that antenna receives.Low-noise amplifier 282 amplifies filtered signal
Afterwards, the converter unit of the terminal device using Transmit Receive Unit can be delivered to, carry out subsequent processing in Base Band Unit.
Optionally, in transmitting filtering link 24, transmitting filtering link 25 and transmitting filtering link 26, emission filter
Quantity can also be to be multiple, in Fig. 3, and for including two emission filters in each transmitting filtering link, i.e. transmitting is filtered
Include emission filter 241 and emission filter 242 in wave link 24, includes emission filter 251 in transmitting filtering link 25
With emission filter 252, it includes emission filter 261 and emission filter 262 in link 26 that transmitting, which filters,.It is filtered in each transmitting
Multiple emission filters are designed in wave link, and the rejection ability of transmitting filtering link pair harmonic wave can be improved.A such as transmitting
The harmonic inhibition capability of filter is 30dB, then the harmonic inhibition capability of two concatenated emission filters is just 60dB.Often
Emission filter in a transmitting filtering link can be the filter with different rejection abilities, transmitting filter composed in this way
Wave link can form the filtering link of the transmitting with different rejection abilities according to demand, reach the demand of any filtering index,
Improve the application range of Transmit Receive Unit.
Further, since wireless communication standard is broadly divided into frequency division duplex (Frequency Division
Duplexing, FDD) and two kinds of time division duplex (Time Division Duplexing, TDD), wherein TDD standard it is wireless
Communication standard, emits link and receives link is timesharing switching.And when receiving and dispatching switching, there is stringent want to protection time slot
It asks, such as 3us, that is, requires to finish from transmitting wireless signal, the time of receives link 28 is switched to duplexer 27, no
It can exceed that 3us.But power amplifier 21, which turns off, generally has time delay, is difficult the thorough shutoff signal within the so short time,
In this way receives link 28 work when, will some 21 residue signal of power amplifier pass through duplexer 27 leakage,
Into receives link 28, the quality of reception is caused to decline.
Therefore, in embodiments of the present invention, branch switch 22 and combining switch 23 can also be switched in duplexer 27
When receives link 28, according to the connection for receiving control instruction closing with transmitting filtering link.Since branch switch 22 and combining are opened
The turn-off speed of pass 23 quickly, therefore when receives link 28 works, closes branch switch 22 and combining switch 23, so that it may keep away
Exempt from the remaining signal of power amplifier 21 and leak to receives link 28, that is, is equivalent to improve in Transmit Receive Unit and receive and dispatch
Isolation between link.The quality of reception of Transmit Receive Unit thus can be improved.In addition, in order to further avoid function
The remaining signal of rate amplifier 21 leaks to receives link 28, branch switch 22 and combining switch 23, can also receive
After receiving control instruction, the connection at least one transmitting filtering link is closed within a preset time.
Further, the form of duplexer 27 can be diversified forms, such as circulator, various forms of duplexers
Deng.It in the present embodiment, can be using circulator as duplexer 27.Circulator is a kind of passive device, and cost is relatively low,
Cooperate controllable branch switch 22 and combining switch 23, it can be ensured that the isolation between Transmit Receive Unit sending and receiving end.
Further, in embodiments of the present invention, the interface quantity of branch switch 22 and combining switch 23 can also be greater than
The quantity of transmitting filtering link.By taking Fig. 2 or Fig. 3 as an example, transmitting filtering link is three, but branch switch 22 and combining switch 23
Interface quantity can be greater than three, for example, four or five.The scalability of Transmit Receive Unit can be improved in this way.With
The development of wireless communication technique, the bandwidth of operation for wirelessly communicating standard can be further improved, be branch switch 22 and combining
Switch 23 designs extra interface, can be when the bandwidth of operation for wirelessly communicating standard improves, it is only necessary to increase corresponding transmitting filter
Wave link.The scalability for improving Transmit Receive Unit in this way reduces the cost of system upgrade.
Fig. 4 is the structural schematic diagram of terminal device embodiment one provided in an embodiment of the present invention, as shown in figure 4, this implementation
The terminal device that example provides includes terminal device main body 41, Transmit Receive Unit 42 and antenna 43.
Transmit Receive Unit 42 and antenna 43 are set in terminal device main body 41, and terminal device main body 41 generates pending
Send wireless signal by emitting after Transmit Receive Unit 42 and antenna 43, the wireless signal that antenna 43 receives passes through radio-frequency receiving-transmitting
Unit 42 is transmitted to terminal device main body 41.
Transmit Receive Unit 42 can be Fig. 2 or Transmit Receive Unit shown in Fig. 3.Terminal device main body 41 is according to terminal
Functional requirement needed for equipment can be configured with different devices, but in order to realize wireless communication, at least need to include a nothing
The baseband processing unit and converter unit of line communication standard.In addition, terminal device main body 41 can also include shell, display screen,
The output equipments such as loudspeaker, other devices such as input equipments such as key, touch device.Various devices in terminal device main body 41
The design that the prior art can be used, repeats no more in the present invention.As long as using radio frequency provided in an embodiment of the present invention
The terminal device of Transmit-Receive Unit, all within protection scope of the present invention.
Fig. 5 is the flow chart of the harmonic suppressing method embodiment one of Transmit Receive Unit provided in an embodiment of the present invention, this
The harmonic suppressing method for the Transmit Receive Unit that embodiment provides is applied to Transmit Receive Unit, and Transmit Receive Unit includes: function
Rate amplifier, branch switch, combining switch, at least two transmitting filtering links, duplexer and receives link；At least two hairs
It penetrates filtering link to be parallel between branch switch and combining switch, each transmitting filtering link includes at least one transmitting filtering
The working frequency range of device, each transmitting filtering link is different；Power amplifier is connect with branch switch, duplexer respectively with combining
Switch is connected with receives link.
As shown in figure 5, the harmonic suppressing method of Transmit Receive Unit provided in this embodiment includes:
Step S501 determines frequency range locating for wireless signal to be sent according to the frequency of wireless signal to be sent.
Step S502, controls branch switch and combining switch is opened to hair corresponding with frequency range locating for wireless signal to be sent
Penetrate filtering link and duplexer switch to combining switch connection so that wireless signal to be sent by power amplifier,
After the corresponding transmitting filtering of frequency range locating for branch switch, wireless signal to be sent link, combining switch, duplexer by with day
The antenna transmitting of wiretap connection.
The harmonic suppressing method of Transmit Receive Unit provided in this embodiment is used to carry out Transmit Receive Unit shown in Fig. 2
Control, implementing principle and technical effect are illustrated in the embodiment depicted in figure 2, and details are not described herein again.
Further, on the basis of the embodiment shown in fig. 4, the harmonic suppressing method of Transmit Receive Unit further include: when
When the antenna connecting with duplexer receives wireless signal, control duplexer is connect with receives link, and is controlled branch and opened
It closes and combining switch is closed.
Further, when the antenna connecting with duplexer receives wireless signal, duplexer and reception chain are controlled
Road connection, and branch switch and combining switch closing are controlled, it specifically includes: when the antenna connecting with duplexer receives wirelessly
When signal, control duplexer is connect with receives link, and control branch switch and combining switch are closed within a preset time.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but in many cases, the former is more
Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art
Part can be embodied in the form of software products, which can store in computer readable storage medium
In, floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are with so that a computer is set
Standby (can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of Transmit Receive Unit characterized by comprising
Power amplifier, branch switch, combining switch, at least two transmitting filtering links, duplexer and receives link；
At least two transmittings filtering link is parallel between the branch switch and combining switch, each transmitting filtering
Link includes at least one emission filter, and the working frequency range of each transmitting filtering link is different；
The power amplifier is connect with the branch switch, and the combining switch is connect with the duplexer, the antenna
Switch is also connect with the receives link；
For the power amplifier for amplifying wireless signal to be sent, the branch switch and combining switch are used for basis
Emission control instruction filters link connection from different transmittings, so as to pass through the power amplifier to the transmission wireless signal
Amplification after, exported by the branch switch to the duplexer, wherein the frequency of the wireless signal to be sent is in institute
State the working frequency range of the transmitting filtering link of branch switch and the combining switch connection；
The duplexer is used to be instructed according to the emission control, switchs and connects with the combining, the combining is switched defeated
The wireless signal to be sent entered is emitted by the antenna connecting with the duplexer.
2. Transmit Receive Unit according to claim 1, which is characterized in that the duplexer is also used to work as and the day
When the antenna of wiretap connection receives wireless signal to be received, it is connect according to control instruction is received with the receives link；
The branch switch and combining switch are also used to be closed according to the reception control instruction and at least one described hair
Penetrate the connection of filtering link.
3. according to the method described in claim 2, it is characterized in that, the branch switch and combining switch, are specifically used for
After receiving the reception control instruction, the connection at least one transmitting filtering link is closed within a preset time.
4. described in any item Transmit Receive Unit according to claim 1~3, which is characterized in that the receives link includes connecing
Filter and low-noise amplifier are received, the duplexer is circulator.
5. described in any item Transmit Receive Unit according to claim 1~3, which is characterized in that the branch switch and described
The interface quantity of combining switch is greater than the quantity of at least two transmittings filtering link.
6. described in any item Transmit Receive Unit according to claim 1~3, which is characterized in that each transmitting filters link packet
Include at least two emission filters.
7. a kind of terminal device characterized by comprising terminal device main body, Transmit Receive Unit, antenna；
The Transmit Receive Unit and the antenna are set in the terminal device main body,
The wireless signal to be sent that the terminal device main body generates is described by emitting after Transmit Receive Unit and the antenna
The wireless signal that antenna receives is transmitted to the terminal device main body by the Transmit Receive Unit；
The Transmit Receive Unit includes Transmit Receive Unit as described in any one of claims 1 to 6.
8. a kind of harmonic suppressing method of Transmit Receive Unit, which is characterized in that be applied to Transmit Receive Unit, the radio frequency is received
Bill member includes:
Power amplifier, branch switch, combining switch, at least two transmitting filtering links, duplexer and receives link；
At least two transmittings filtering link is parallel between the branch switch and combining switch, each transmitting filtering
Link includes at least one emission filter, and the working frequency range of each transmitting filtering link is different；
The power amplifier is connect with the branch switch, and the duplexer switchs respectively with the combining and the reception
Link connection；
The described method includes:
According to the frequency of wireless signal to be sent, frequency range locating for the wireless signal to be sent is determined；
It controls the branch switch and combining switch is opened to hair corresponding with frequency range locating for the wireless signal to be sent
It penetrates filtering link and the duplexer is switched to switch with the combining and be connected, so that the wireless signal to be sent is logical
Cross the power amplifier, the branch switch, frequency range locating for the wireless signal to be sent corresponding transmitting filtering link, institute
Emitted after stating combining switch, the duplexer by the antenna being connect with the duplexer.
9. according to the method described in claim 8, it is characterized in that, the method also includes:
When the antenna connecting with the duplexer receives wireless signal, the duplexer and the receives link are controlled
Connection, and control the branch switch and combining switch closing.
10. according to the method described in claim 9, it is characterized in that, described when the antenna connecting with the duplexer receives
When to wireless signal, controls the duplexer and connect with the receives link, and control the branch switch and the combining
Switch is closed, comprising:
When the antenna connecting with the duplexer receives wireless signal, the duplexer and the receives link are controlled
Connection, and the branch switch and combining switch closing are controlled within a preset time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467206.XA CN109361415B (en) | 2018-12-03 | 2018-12-03 | Harmonic suppression method of radio frequency receiving and transmitting unit, radio frequency receiving and transmitting unit and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811467206.XA CN109361415B (en) | 2018-12-03 | 2018-12-03 | Harmonic suppression method of radio frequency receiving and transmitting unit, radio frequency receiving and transmitting unit and terminal equipment |
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| CN109361415B CN109361415B (en) | 2023-12-15 |
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| CN109361415B (en) | 2023-12-15 |
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