CN104113356B - The method of wireless communication unit, radio-frequency module and tuning wireless communication unit - Google Patents
The method of wireless communication unit, radio-frequency module and tuning wireless communication unit Download PDFInfo
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Abstract
The present invention provides a kind of wireless communication unit and the method tuning wireless communication unit and a radio frequency unit, a kind of wireless communication unit, and wherein said wireless communication unit includes：At least one antenna port；And emitter and receptor are operatively coupled at least one antenna port described by duplexer;Wherein, described duplexer includes：It includes dynamically reconfigurable phase-shift network：At least one tunable radio frequency element；And at least one switch, it is operatively coupled to described tunable radio frequency element, and be radiofrequency signal by described dynamically reconfigurable phase-shift network, controllably reconfigure described dynamically reconfigurable phase-shift network, optionally to support the operation of forward and reverse dual-mode simultaneously.The method of the wireless communication unit of present invention offer and tuning wireless communication unit and a radio frequency unit can reduce complexity.
Description
【Cross reference】
This application claims the applying date is the priority of the U.S. Provisional Application No. 61/813717 on April 19th, 2013, and entirely
Literary composition is referenced to the application.
【Technical field】
The radio frequency being related to wireless communication unit of the present invention（RF）Module, can reconfigure the combination of phase shift, more specifically
Ground is said, is related to the transceiver module including reconfigurable duplexer.
【Background technology】
Wireless communication unit, such as portable radio, phone etc., generally support in single radio frequency（RF）The behaviour of frequency band
Make, the operational frequency bands using in a communications system.However, due to the fast development of mobile communication, need to support a great deal of
Various radio frequency standards, system and service frequency spectrum can be supplied to now mobile subscriber amount.Additionally, radio frequency（RF）Logical
Letter system has developed, and the nearest trend of mobile communication equipment is the communication supported in multiple RF frequency bands, for example, to support
Cross over the communication of multiple communication standards or geographic area.At present, typical transceiver is applied to the communication within the scope of supporting one,
For example, third generation partner program（3GPPTM）, then may need to support the frequency bands different more than 10.
A kind of method supporting wide frequency range, it is to need thing that wireless communication unit covers multiple frequency bands or communication standard
Many parallel transceiver circuits are rationally set in wireless communication unit and/or one or more parallel transceiver circuit
Need to be tuned in multiple frequency ranges and run.These solutions in wireless communication unit bring some harmful effects,
Including the higher-quality radio frequency of needs（RF）Element, is such as difficult to be disturbed, provides higher performance, consumes the silicon area minimizing
Or circuit board module area etc..Additionally, in order to meet performance requirement in the frequency band of all supports simultaneously, these solutions
Increased the complexity of design.
One kind typically moves（Wirelessly）Communication unit（Sometimes it is referred to as mobile subscriber in the environment of cellular communication single
Unit（MS）, or in third generation partner program（3GPPTM）Term in communication system is user equipment（UE））Comprise one day
Line, is often coupled to for isolating the duplexer filter of reception chain and chain or duplexer in wireless communication unit.Certainly this
A little parts it is desirable to be able to cross over very wide frequency range, or can be operated in antenna or around antenna
Comparable/parallel RF circuit closely.
Additionally, in these communication standards, described Radio Access Network generally adopts some technology, to be more convenient and to hold
Easily communicate, such as FDD（FDD）Technology, the receives frequency of frequency band of different groups and tranmitting frequency are used for communicating.In addition, can
To utilize time division duplex（TDD）, lead in time domain detached to external signal with return signal.Additionally, different communication units
Between access network can be using different waveforms, signal modulation and encoding scheme.
One key component of any FDD radio system is front end duplex device assembly, and its major function is that protection receives
Device（Rx）Will not be because of emitter（Tx）Noise emission and desensitize, and transmission power leakage be damaged to communication equipment reception frequency
Band.This damage is likely due to one or more reason and causes：Intermodulation, the outer crossmodulation intercepting of band and receptor locally shake
Swing being mutually mixed of phase noise of device.
In full duplex radio electric system, receives frequency（frx）And transmission frequency（ftx）, typically different, they are
Carry out separating by one specific " duplex frequency "：（fdpx）=frx–ftx.
In front end structure known to one 100, such as mono- example of use SAW based on duplexer 150 shown in Fig. 1,
In the SAW based on duplexer, in order to minimize the insertion loss of the band connection frequency in other duplexer branches, the concept quilt of phase shift
The Low ESR trap being used for converting in the stop-band frequency of a duplexer branch becomes the high resistant level of antenna input（high-Z
level）.When antenna side is simultaneously connected with them, this provides the isolation between two paths.In Fig. 1, thus, for example receiving
Device, antenna 102 is operatively coupled to top radio-frequency path 104；Such as emitter, antenna 102 is operatively coupled to relatively low
Radio-frequency path 106.One high pass（High-pass, HP）Type phase-shift network 108 is introduced in reception（Rx）Path, and quilt
It is configured to convert the Low ESR trap of frequency of heart in the transmission（low-Z notch）Become the high impedance electricity in antenna input 102
Flat（high-Z level）, equally, a low pass（LP）Type phase-shift network 110 is by transmitting（Tx）Path introduces, and is joined
Put to change frequency of heart in the reception Low ESR trap be antenna input high impedance level.High pass（HP）Phase-shift network
108 or low pass（LP）Phase-shift network 110 is depending in the band connection frequency needed for this branch side for specific duplexer branch
With respect to stop-band frequency.(far-out) stop-band frequency also providing for distant place is selected further to decay in the frequency of phase-shift network.
Each wave filter responds by surface acoustic wave（Surface acoustic wave, SAW）Wave filter 112 and 114 executes, described SAW filter
Ripple utensil has the port 116 and 118 being matched corresponding receptor and emitter.
Typically, in all of second filial generation（2G）And the third generation（3G）Honeycomb FDD frequency range, frx>Ftx and fdpx=frx-
Ftx is the little percentage ratio of frx and ftx（Generally<10%）.However, in forth generation（4G）Communication band, provides some to add
ftx>The frequency band of frx, uses opposition duplex situation（reverse duplex case）150 expressions（Wherein fdpx<0）.
In 3G/4G cellular system, the quantity that FDD frequency band is supported quantity of frequency band needed in response to roaming in band and outside carrying increases
And increase.Furthermore, it is necessary to support multi input, multi output（MIMO）The complexity for RF front end that communicates increases more pressure.This
A little performance requirements and the related complexity of technology and corresponding circuit/component effectively limit can be in single wireless platform
To support the quantity of duplexer.It is in demand for compressing the quantity of these duplexers and not affecting performance, because can be direct
Impact is in radio frequency（RF）The size of front end solutions and the reduction of cost.
Duplexer is used for wireless communication unit and uses two resonance structures, shows a bandpass response and concentrates on and connects
Receive frequency range and the mid frequency of transmitting frequency range.Described mid frequency generally very close to each other, combines sometimes through one
Network is connected antenna port.The receives frequency band-pass response of duplexer contributes to suppressing carrying by force and outer block and reduce known
Signal coexistence problem with neighbouring communication unit.The tranmitting frequency band logical response of duplexer, contributes to suppressing band during output
The output of external noise, emitter harmonic emissions（harmonic emissions）Reverse intermodulation with transmission signal（reverse
intermodulation）With interference signal, emitter is reached by antenna.
One almost open to the outside world（Represent in opposite side（Reversely receive/send）There is high impedance（Z））The network that matches
Ensure that the stop-band frequency in the passband of oneself in wave filter is mated in the impedance in each wave filter of antenna port completely.If
The network matching is not open to the outside world, the impedance that phase-shifter is usually used to rotatable phase matching network be equivalent height ' Z'
（high Z）.
For under the inversion condition of 4G（ftx<frx）, sequentially reverse to the phase shift combinations device topological structure of HP/LP.Therefore,
A low-pass/high-pass can be used（LP/HP）Phase shift combinations device replacing, to be connected to corresponding Rx and Tx road
Footpath.
One tunable diplexer, needs to be tuned at different cellular band（For example, at least cover 700-1000MHz's
The LTE cellular band of scope）It is also desirable to the situation of forward and reverse duplex can be processed, then it is not enough to tune phase-shift network
Element, phase-shift network 108 and 110 as shown in Figure 1.
Therefore, a kind of demand exists, a kind of improved RF front end structure, for example, has cost benefit and is being easy to manage
Forward and reverse duplex is supported under the mode of complexity of reason.
【Content of the invention】
Therefore, each aspect of the present invention provides a kind of radio communication device, radio frequency module and described duplexer electricity
Road, for mitigate, alleviate or eliminate above-mentioned individually or with any combination of one or more shortcomings.
According to an aspect of of the present present invention, provide a kind of wireless communication unit, described wireless communication unit includes：At least one day
Line end mouth；And emitter and receptor are operatively coupled at least one antenna port described by duplexer;Wherein, described
Duplexer includes：It includes dynamically reconfigurable phase-shift network：At least one tunable radio frequency element；And at least one opens
Close, it is operatively coupled to described tunable radio frequency element, and is penetrating by described dynamically reconfigurable phase-shift network
Frequency signal, controllably reconfigures described dynamically reconfigurable phase-shift network, positive and anti-optionally to support simultaneously
Operation to dual-mode.
Optionally following characteristics are：At least one switch described depends on the frequency of operation, optionally described in coupling extremely
One of few at least two paths between an antenna port and described tunable radio frequency element, to support forward or backwards
Dual-mode operates.At least one switch described includes two switches, and it is operationally connected in series to corresponding inductance, and configures
For being turned off to support the operation of the lowpass frequency pattern in described emitter or described receptor.Described radio communication list
Unit further includes that at least one tunable capacitor is located at and is connected to and each of at least two switches parallel path.First is adjustable
Electric capacity is arranged to support one of adjustable high-pass equipment response modes behaviour in described emitter or described receptor
Make and the second tunable capacitor is arranged to support to put down to another corresponding inductance in described receptor or described emitter
The adjustable low pass frequency response pattern operation of row.At least one switch described includes at least two switches：At least two switches
First switch be disposed for coupling first between described antenna port and emitter and described antenna port and receptor
Path, for configuring the positive dual-mode operation of described emitter and described receptor；And described at least two switches
Second switch is configured to couple second between described antenna port and described emitter and described antenna port and receptor
Path, the opposition duplex pattern operation of configuration emitter and receptor.It is many that at least one switch described includes at least one one pole
At least one of duplexer thrown the duplexer thrown, at least one multipole more.Wherein said dynamically reconfigurable
Phase-shift network includes adjustable phase response, forms following two parts：Emitter phase-shift network and adjustable transmission radio-frequency (RF) component；With
By receptor and the adjustable reception radio-frequency (RF) component of receptor phase-shift network.Described wireless communication unit further includes：Control
Device, it is operatively coupled to described emitter and receptor, and wherein, tunable high-pass equipment responds and tunable low pass
Frequency response is to be controlled by described controller, and the tunable transmitting radio-frequency (RF) component tuning first being respectively provided for reference to series connection can
Tuning capacity, and combine tunable reception radio-frequency (RF) component tuning second tunable capacitance of another series connection accordingly.Described at least
One tunable radio frequency element includes at least one of variable band-pass filter and adjustable notch filter wave filter.
Another aspect of the present invention provides a radio-frequency module, and described radio-frequency module includes duplexer, and described duplexer includes
Dynamically reconfigurable phase-shift network：At least one tunable radio-frequency (RF) component；And at least one switch, its operationally coupling
Close described tunable radio-frequency (RF) component, and controlled reconfigure can dynamically reconfigurable phase-shift network, be by institute
State can dynamically reconfigurable phase-shift network radiofrequency signal, optionally support dual-mode forward and reverse operation
Alternatively following characteristics are：At least one switch described depends on the frequency of operation, optionally described in coupling extremely
One of few at least two paths between an antenna port and described tunable radio frequency element, to support forward or backwards
Dual-mode operates.At least one switch described includes two switches, and it is operationally connected in series to corresponding inductance, and is configured to
It is turned off to support the operation of the lowpass frequency pattern in described emitter or described receptor.Described radio-frequency module enters one
Step includes at least one tunable capacitor and is located at being connected to and each of at least two switches parallel path.First tunable capacitor quilt
It is configured to support one of adjustable high-pass equipment response modes operation in described emitter or described receptor and the
Two tunable capacitors be arranged to support in described receptor or described emitter another corresponding inductance parallel can
The low pass frequency response pattern operation adjusted.At least one switch described includes at least two switches：The first of at least two switches
Switchgear distribution becomes for coupling the first path between described antenna port and emitter and described antenna port and receptor, uses
In the positive dual-mode operation configuring described emitter and described receptor；And the second switch of described at least two switches
It is configured to couple the second path between described antenna port and described emitter and described antenna port and receptor, configuration
The opposition duplex pattern operation of emitter and receptor.The antenna that at least one switch described includes throwing at least one one pole more is opened
At least one of duplexer thrown pass, at least one multipole more.Wherein said dynamically reconfigurable phase-shift network bag
Include adjustable phase response, form following two parts：Emitter phase-shift network and adjustable transmission radio-frequency (RF) component；With by receptor
The receptor of phase-shift network and adjustable reception radio-frequency (RF) component.
Another aspect of the present invention provides a kind of method of tuning wireless communication unit it is characterised in that described communication unit
Unit includes at least one antenna port, emitter and receptor, and described emitter and receptor pass through duplexer operationally coupling
Close at least one antenna port described, wherein, described duplexer includes dynamically reconfigurable phase-shift network, methods described
Including：It is emitter and the frequency mode of receptor determination operation;According to operation determination frequency mode, dynamically configure to
At least one of few switch path, may be operably coupled to a few antenna port to emitter or receptor；Adjust
At least one tunable radio-frequency (RF) component in humorous described emitter and described receptor；At least one transmitting described in being tuned at further
The other lamped element of at least one of device and receptor, at least one tunable radio-frequency (RF) component described in connection, thus dynamically
Reconfigure described dynamically reconfigurable phase-shift network, be penetrating by described dynamically reconfigurable phase-shift network
Frequency signal, optionally supports the operation of forward and reverse dual-mode.
Purpose one skilled in the relevant art of foregoing invention can have no after reading the preferred embodiment of the application
Doubt obtains, and below in conjunction with diagram, above-mentioned preferred technical scheme is described in detail.
【Brief description】
Fig. 1 illustrates that a known front-end architecture adopts SAW filter and phase matched circuit.
Fig. 2 illustrates to be suitable to an example of the wireless communication unit of example embodiment supporting the present invention.
Fig. 3 illustrates the first case of the duplexing architecture reconfiguring of the wireless communication unit of Fig. 2.
Fig. 4 illustrates second example of the reconfigurable/tunable duplex structure of the wireless communication unit of Fig. 2.
Fig. 5 illustrates the 3rd example of the reconfigurable/tunable duplex structure of the wireless communication unit of Fig. 2.
Fig. 6 illustrates the 4th example of the reconfigurable/tunable duplex structure of the wireless communication unit of Fig. 1.
Fig. 7 illustrate by one reconfigurable/tunable phase shift network tuning include an emitter and one connect
Receive the example flow diagram that device is operatively coupled to the method for the transceiver of communication unit of at least one antenna port described.
【Specific embodiment】
The embodiment of the present invention will be described with the term of wireless communication unit, such as user equipment, and it includes a sky
Line end mouth, it can be operably coupled at least one transceiver to antenna.However, it will be understood by those skilled in the art that here
Description idea of the invention may be implemented in any kind of wireless communication unit, can include a transceiver, such as base station.This
The wireless communication unit of term description is used, the phase shift that it can reconfigure combines in inventive embodiment, more specifically, RF
Transceiver module include one reconfigurable（For example, tunable）Duplexer.In this fashion, execution one can weigh
The duplexer of new configuration, duplexer can simplify Front-end Design and the performance requirement of some the RF elements reducing, because can adjust
Certain frequency band whole or multiple frequency band are to required narrow band channel.In some instances, reconfigurable duplexer is to cover
Lid is just being thought and reverse duplex applications.
Additionally, the wireless communication unit of embodiments of the invention description, including：One emitter and receptor, extremely
A few antenna port and a reconfigurable phase-shift network, described reconfigurable phase-shift network is operatively coupled
At least one antenna port described is to transmitters and receivers, and is configured to dynamically reconfigure at least one of two
Phase place：Signal and the signal being input to receptor from emitter output.
With reference first to Fig. 2, according to one embodiment of present invention, wireless communication unit（Sometimes in the situation of cellular communication
Down or in user equipment（UE）In third generation partner program（3GPPTM）Term in communication system is moving user unit
（MS））Block diagram as shown in Figure 2.
Wireless communication unit 200 comprises transceiver, and described transceiver has and is coupled to one and reconfigures or can again join
The antenna 202 of the duplexer 204 put, in one example, reconfigurable duplexer 204 includes a simple lump unit
Part network（simple lumped component network）, it is configured to execute low Z（low-Z）To high Z（high-Z）Become
Change.For example, using the J-type phase inverter that quarter-wave λ/4 transmission line is equivalent, next to that tunable RF assembly.Transmission
The version of the equivalent lamped element of line is π type -90 degree phase-shifter（π-type-90°phase shifter）, described π type-
90 degree of phase-shifters can realize phase-shifter with the topological structure of a low pass or high pass, as shown in following Fig. 3-6.
Based on desired mid-band frequency, fc, the lamped element inductance " L " calculating for -90 degree phase-shift networks, electric capacity
The equation of " C " value, be respectively：
Formula [1]
In one embodiment, described reconfigurable duplexer 204 can use typical π type or T-shaped phase shift net
Implementing, described π type or T-shaped phase-shift network include network, for example, fractional bandwidth（Fractional bandwidth, BW）, ΔBW=
（fu-fl）/fc, be equivalent to～25%, -90 ° ± 15 ° are defined based on normal phase shift.
In one embodiment, reconfigurable duplexer 204 is configured to support a wide frequency range, covers
Normal and reverse honeycomb duplex applications, such as in the range of 700-100MHz, including the LTE frequency band 17 shown in table 1 below, 13,
20 and 8：
Based on formula (1), the inductance " L " obtaining, electric capacity " C " value are relevant with resonant frequency fc, and described resonant frequency fc is
Frequency centered on selected frequency range definition：
Formula [2]
In one example, fminAnd fmaxAs follows selected：
(fmax–fmin)/fc<25% formula [3]
Referring again to Fig. 2, receiver chain as known in the art, including：The front-end circuit 206 of receptor（Effectively carry
For reception, filtering and middle or base-band frequency conversion）.Described front-end circuit 206 is connected to signal processing module 208（Generally by
One digital signal processor（DSP）To realize）, the output of signal processing module 208 is provided to a suitable output dress
Put 210, such as one screen or flat faced display.Receiver chain also includes a controller 214, and it safeguards overall subscriber unit
Control.Controller 214 is also connected to receiver front end circuit 206 and signal processing module 208.Controller 214 is also connected to
One storage device 216, its operation mechanism optionally storing, such as decoding/encoding function, synchronous mode, code sequence
Etc..Timer 2 18 is operatively coupled to controller 214, is the timing of the control operation in wireless communication unit 200
（The transmitting of the signal of Time-Dependent or reception）.
As for transmitting chain, consist essentially of an input equipment 220, such as keyboard, sent out by signal processing module 208 series connection
Emitter/modulation circuit 222 and power amplifier 224 are to coupled antenna 202.Bonder 212 is typically situated in power amplifier 224
And antenna 202 between, antenna 202 is exported to baseband processing circuitry with the part sending transmission signal by feedback path 213,
For example described baseband processing circuitry is located at arbitrary transmitter/modulation circuitry 222 or signal processor module 208.Emitter/modulation
Circuit 222 and power amplifier 224 are operationally responsive to described controller 214.
As illustrated, front radio-frequency module 205 can be used for accommodating each front-end module or element or circuit, such as in this enforcement
The reconfigurable duplexer 204 of example and other RF assembly（Not shown）.
With reference now to Fig. 3, the first model of the tunable duplex structure reconfiguring of the wireless communication unit shown in Fig. 2,
Example.The first embodiment of the described duplexer 304 reconfiguring is suitably adapted for routine or reverse duplexer design, with such as ginseng
Examine described by Fig. 4-6 can be both conventional duplexer and opposition duplex device between switching over and compare, described reconfigure
Duplexer 304 includes the network of a simple lamped element composition, rather than quarter-wave λ/4 transmission line coupling antenna
（ANT）202 arrive respective tunable filter 332 and 336.The network of described lamped element composition is included for inductance and electric capacity
Value, be arranged to execute low Z to high transform, thus being equivalent to quarter-waveThe phase shift of -90 degree of transmission line.
The network of shown lamped element composition is π type -90 degree phase-shifter, can opening up by a low pass as depicted or high pass
Flutter structure to realize.
The topological structure of described high pass, is typically used in the path of a receptor, spends phase-shifter including a π type -90
There are two inductive branches（L1）With 312（L2）334th, an electric capacity bridge（C）320, then variable band-pass filter 332, its
May be implemented as a SAW filter.Low pass topological structure, is generally used for the path of emitter, also includes a π type -90
Degree phase-shifter, has two capacitive branch（C1）314 Hes（C2）338, with an inductance bridge（L）322, it is followed by tunable band-pass
Wave filter 336, it can be realized by a SAW filter.
According to exemplary embodiment, and in order to minimize number of elements used in phase shift combinations network, so
Suggestion inductive branch（L1）312 and capacitive branch（C1）314 will be around the mid frequency sympathetic response each other designing, and inductive branch
（L2）334 and capacitive branch（C2）338 parts that can be combined into variable band-pass filter Rx332 and Tx336 design respectively.
In this manner, the embodiment of an example using these design factors setting using a kind of phase shift combinations device 350 of simplification
Meter, in HP path, it only includes one（a series）（HP）Electric capacity（C）The 352 improved variable band-pass filters of heel one
354；In LP path, equally simply adopt one merely（LP）Inductance one improved variable band-pass filter of 362 heel
364.
As is well understood, in the example in figure 3, it is especially suitable for realizing setting of a duplexer normally fixed
Meter.In this case, it will be understood to those of skill in the art that the topological structure of high pass and low pass can be exchanged, so that he
Can be configured to one reversely fix duplexer design.
With reference now to Fig. 4, one of the wireless communication unit shown in Fig. 2 reconfigurable（For example adjustable）Duplexer
Another example of 404 structure.In this example, it is considered a kind of of Fig. 3 and substitutes or enhancing structure.In order to
In certain frequency range process opposition duplex situation, for example, reconfigurable phase-shift network can by connect and
Disconnect some lamped elements to realize.For example, referring concurrently to returning to Fig. 3, high pass phase-shift network is provided to duplexer, bag
Include：By switching 415 control, the reception bandpass filter 454 in receiver path, the HP electricity in this path, in Fig. 3
Hold 352 and show HP electric capacity in the diagram（Chp,1）452.Advantageously, in order to support opposition duplex situation, switch 415 can be by
Open and paralleling switch 420 can be closed.Paralleling switch 420 is coupled to low pass inductance（Llp,2） 461（Be equivalent in Fig. 3
LP inductance 362）.Hereafter, will be in a LP frequency（Realized by low pass inductance 461）90 degree of phase-shift networks RX path pass
Pass phase shift signalling to band filter 454.Because duplexer 404 includes an adjustable tunable reception bandpass filter,
Described duplexer 404 can be retuned to display HP（Positive）Receiver path or LP（Opposition duplex）Receiver path institute
The filtering characteristic needing.
Similarly, and again referring concurrently to Fig. 3, a low pass phase-shift network is provided to duplexer 404 and includes：Pass through
The control of switch 425, in the transmitting filter 464 of transmitter path, in this path, the LP inductance 362 in Fig. 3 is in figure
It is LP inductance shown in 4（Llp,1）462.Advantageously, in order to support opposition duplex situation, described switch 425 can be opened
And paralleling switch 430 can close.Paralleling switch 430 is coupled to high pass electric capacity（Chp,2）451（Be equivalent to the HP electric capacity of Fig. 3
352）.Hereafter, in a HP frequency（Realized by high pass electric capacity 451）By 90 degree of phase-shift networks in the path transmission phase shift letter receiving
Number to transmitting filter 464.Because duplexer 404 includes an adjustable adjustable transmission band filter, described double
Work device 404 can be readjusted as assuming LP（Positive）Transmitter path or HP（Opposition duplex）The required filtering of transmission path
Characteristic.
Therefore, in a word, by parallel, selectable path, each receptor and emitter have two parallel paths, carry
Available for one（Switching）High pass path and low pass path.Therefore, by closure switch 415 and 425, described reception
Device path is coupled to Chp,1452, and described transmitter paths are coupled to Llp,1462, additionally, and alternatively, closure switch 420
With 430, described receiver path is coupled to Llp,2461 and described transmitter paths are coupled to Chp,2451.
Although some embodiments of the present invention have shown that in figure with respect to using single-pole single-throw switch (SPST), permissible
Envision any amount of single limit（Or it is bipolar）N throws out and can be used, and depends on for example in the transmission being supported or reception
Path quantity, structure used is used or wireless communication standard can be supported.For example in the example in the figures, four lists
Monopole single throw switch is illustrated, it is contemplated, however, that two single-pole double-throw switch (SPDT)s can be implemented in other embodiments, selected by it
Path depend on whether that the receiver path of selection and corresponding transmitter paths are just executing the duplex in any one forward direction
Under pattern or opposition duplex pattern.One high via footpath of a such as receptor switches out a low pass path automatically, transmitting
Vice versa for device side.
In one example, if the frequency range of a tunable diplexer is necessary, part bandwidth
(fractional bandwidth) BW covers and is more than 25%, then in this phase shift（Combination）Network in tunability L and C
Element is used.Fig. 5 illustrates the exemplary configuration 504 of this example.One in this phase shift（Combination）Using tunable L, C in network
The example of element, the electric capacity C of the variable-capacitance element that a switch employs adjusting with is connected, to produce one
Little Cmin, when capacity cell " C " needs to be switched off, it is minimum C in this caseminIt is required.Additionally, one can
Tuning capacitor（Chp,2）551 and an inductance（Llp,1）The result of 562 parallel connections, is equivalent to tunable inductor（The inductance of Fig. 4
462）.
Therefore, Fig. 5 illustrates the reconfigurable of the wireless communication unit of Fig. 2（For example, adjustable）Diplexer structure 504 another
One example.Here, high pass phase-shift network is provided to a tunable diplexer and includes by capacitor（Chp,1）552, with '
Open ' switch 520, receive path tunable reception bandpass filter 554.Advantageously, reversely double in order to support
The situation of work receptor, switch 520 can be closed, thus formed thering is tunable capacitor 552 and low pass inductance（Llp,2）
The LC network of 561 parallel connection.Hereafter, in LP frequency（I.e. by the LC in parallel with tunable capacitor 552 and low pass inductance 561
Real-time performance）Described 90 degree of phase-shift networks in receiver path transmission phase shift signalling to tunable reception bandpass filter 554.
Similarly, low pass phase-shift network is provided to duplexer, including passing through to control in transmitter path, for example, closes
One tunable emission bandpass wave filter 564 of combination switch 525, in this path, LP inductance 562 is variable with little high pass（Can
Tuning）551 electric capacity are in parallel to support positive duplex applications（normal duplex case）.Alternately, switch 525 can be by
Open that to be coupled only to high pass variable with antenna-path（Tunable）Electric capacity 551, to support the feelings of an opposition duplex transmitter
Condition.Hereafter, in HP frequency（Realized by high pass inductance 551）Described 90 degree of phase-shift networks transmitter paths transmission phase shift letter
Number to adjustable transmission band filter 564.
In one example it is assumed that for, in the case of a high pass, tuning the combination of this two adjustable parameters, receiving band logical
Wave filter 554 and any one of tunable capacitor 551 or tunable capacitor 552（Depending on normal duplexing mould accordingly
Formula or opposition duplex pattern）It is performed, to guarantee desired phase shift and wave filter response.In alternative example it is assumed that
In the case of a low pass, if tunable capacitor 551 or tunable capacitor 552 and the low pass inductance in parallel pair switching
Less, only tunable reception bandpass filter 554 can be retuned for the impact of frequency response.
In the example above, tunable diplexer has been illustrated as including band filter.However, referring now to Fig. 6,
The wireless communication unit of Fig. 2 reconfigurable（For example, adjustable）The another example of duplexer 604.A thus tunable trap
Wave filter cascades tunable bandpass filters, to produce sending out in the characteristic frequency skew being defined by trap frequency further
The isolation penetrated-receive.
In operation, a high pass phase-shift network passes through tunable capacitor（Chp,1）652 can provide a duplexer,
Described duplexer includes the tunable reception bandpass filter 655 in RX path.Advantageously, in order to support opposition duplex to connect
Receive the situation of device, switch 620 can be closed, thus formed that there is tunable capacitor 652 and low pass inductance（Llp,2）661
LC network in parallel.Hereafter, in a LC frequency（Tunable capacitor 652 is had by LC network in parallel and low pass inductance 661 is real
Existing）90 degree of phase-shift networks RX path transmission phase shift signalling to tune reception bandpass filter 655.In this example
In, adjustable reception bandpass filter in RX path 655, it has been added a tunable notch filter 654, described fallen into
The transmission center frequency values that ripple is disposed corresponding to.In this fashion, the response of tunable reception bandpass filter 655 can be set
Meter is by this way to assume freehanded in-plant stopband rejection characteristic.
Similarly, low pass phase-shift network, can pass through to control, such as closure switch 625 are provided in a transmission path
To adjustable transmission band filter 665, in this path, in LP inductance（Llp,1）Variable parallel to little high pass（Adjustable）Electric capacity
（Chp,2）651, by norm<0.5pF, to support positive situation.Alternately, switch 625 can be opened, and antenna-path only coupling
Close high pass variable（Tunable）Electric capacity 651, to support the situation of an opposition duplex device.Hereafter, in the frequency of HP（I.e.
Variable by high pass（Tunable）Electric capacity 651 is realized）, 90 degree of phase-shift networks are in transmission path transmission phase shift signalling to adjustable transmission
Band filter 665.In this example, the adjustable transmission band filter 665 in transmission path also supplement one adjustable
Humorous notch filter 664, has and is disposed corresponding to receive the trap on mid frequency.In this fashion, tunable transmitting
Band filter 665（Bandpass Filters response）Can be designed to assume unrestraint in-plant stopband suppression by this way
Characteristic processed.Therefore, the Bandpass Filters response of adjustable transmission band filter 665 can be designed as reducing or eliminating and receiving
Noise in the transmitter of frequency, described receives frequency can be high, and can reduce the sensitivity of receptor, because from send out
Emitter is to the noise leakage of receptor.
In some instances, it is input to receiver chain corresponding from exporting to the transmitter chain in above-described embodiment, can adopt
With silicon in insulator（SOI）Duplexer technology, and in some instances, ON/OFF they can control as shown in Figure 2
Device 214 controls.May include in the structure of Fig. 2-6 example or form a part for a radio transceiver module, it includes launching
Device and the respective path of receptor.
Although embodiments of the invention have been described with regard to the band filter in front-end module it is contemplated that
Any suitable filter in other embodiments can use, and such as high pass, low pass or band hinder（Trap）Filter.
Although the present invention has shown that some embodiments in figure with regard to using tunable radio frequency wave filter or tunable
RF amplifier is it is contemplated that any suitable tunable radio frequency part in other embodiments can be used, depending on example
Wireless communication standard as the transmission supported or the quantity, architecture used or support of RX path.
Although embodiments of the invention have been described with regard to supporting some wireless communication standards, such as in LTE system not
With frequency range it is contemplated that any wireless communication system in other embodiments of the invention can be supported or any amount of
Wireless communication system using multi-mode radio communication unit can be supported.
Therefore, embodiments of the invention can provide a kind of simplification（Because less radio frequency component is required）, duplexer,
It includes the topological structure of a phase-shift network.Therefore, embodiments of the invention can provide dynamically reconfigurable（For example, with
Mode in real time）Constitute the one or more lamped element of phase-shift network（L、C）, particularly in some instances, with
It is switched to the switch topology of opposition duplex operation from positive duplex operation.Therefore, embodiments of the invention can provide one
Plant the duplexer in the multiple ingredients saved, it includes a phase shift combinations device net with respect to existing phase-shift network
Network.Additionally, embodiments of the invention can provide a kind of saving for supporting to include the many of the duplexer situation of forward and reverse
The quantity of the duplexer of frequency band Platform Solution.
With reference now to Fig. 7, flow process 700 shows the exemplary method of the transceiver of adjustment communication unit, described communication unit
Including reconfigurable by one according to an emitter and a receptor（For example, tunable）Phase-shift network is operable
Be coupled at least one antenna port described, for example, described reconfigurable phase-shift network is of above-described embodiment
Or multiple exemplary circuit arrangement.Flow process 700 starts from 705, and moves to 710, in step 710, is emitter and reception
Device determines operation（Frequency）Pattern.In an alternative embodiment, the step for this flow chart can be skipped, receptor and emitter
Can initial setting up in default location, for example normally（Positive）Operator scheme.In step 715, determine that the frequency mode of operation is
No there occurs change.If the frequency mode of operation is determined not changing, process circulates, for example, return to 710, otherwise,
Flow process proceeds to 720, in step 720, with the frequency mode according to the operation determining, dynamically configures the transmitting that is operably connected
At least one switch at least one path of at least one antenna port described of device or receptor.In step 725,
The tunable radio-frequency (RF) component of at least one of each transmitters and receivers is tuned.In step 730, in emitter and connecing
Receive at least one the other lamped element assembly at least one of device, be alternatively conditioned, with described at least one can
At least one of radio-frequency (RF) component of tuning is used in combination, such as simultaneously and/or based on related the depositing of frequency mode to operation
Storage is tabled look-up（LUT）Value, thus the phase place dynamically reconfiguring is applied to the letter by reconfigurable phase-shift network
Number.Then, in step 735, this process terminates.
In some instances, some shown in flow charts steps or all can realize within hardware and/or flow process
Part steps shown in figure or all can realize in software implement.
It is contemplated that the concept of the invention described above can be applied to including radio-frequency (RF) component or electricity by semiconductor maker
Any radio-frequency module on road.It is still further contemplated that, for example, semiconductor maker can be using idea of the invention at one
Independent radio-frequency module or application specific integrated circuit（ASIC）Design, or can be implemented in any other subsystem component
In.
Can without departing from the spirit of the invention, the function between any suitable distribution different function units can be managed
Solution, such as with respect to this assembly residing in arbitrary front-end module or any transceiver module or circuit, the function of being used.
Therefore, specific functional units are seen merely as refer to suitable device, for providing described function, rather than instruction is strict
Logic or physical arrangement or tissue.
Although the present invention is described in conjunction with certain embodiments, it is not intended to be limited to spy set forth herein
Setting formula.On the contrary, the scope of the present invention is defined only by the following claims.In addition although feature is it may appear that combine special
Determine embodiment to describe, it would be recognized by those skilled in the art that the various features of described embodiment can be carried out according to the present invention
Combination.In detail in the claims, term is not excluded for " inclusion " presence of other elements or step.
Although additionally, being individually listed, multiple devices, element or method and step can by such as individual unit or
Manage device to realize.Although in addition, each feature can be included in different claims,
These may be advantageously combined, and includes being not meant in different claims that the combination of feature is not
Feasible and/or be not favourable.In addition, including feature in a class claim to be not meant to the category, but
Represent that this feature is equally appropriate and be applied to other claim categories.
Additionally, what feature order in the claims was not meant to specifically sequentially to have to carry out according to feature, and
And especially, in claim to a method, the order of each step is not meant to what these steps sequentially must execute according to this
Any particular order.On the contrary, these steps can be carried out in any suitable order.Additionally, singular reference be not excluded for multiple.Cause
This, ' one ' mentioned above, ' first ', ' second ' etc. are not precluded from multiple.
Therefore, a kind of improved wireless communication unit, radio-frequency module and operational approach can support to have been described with multiple
Frequency range and/or multiple communication standard, wherein, it is so that the shortcoming of prior art mentioned above is alleviated significantly.
Claims (20)
1. a kind of wireless communication unit is it is characterised in that described wireless communication unit includes：
At least one antenna port；And
Emitter and receptor are operatively coupled at least one antenna port described by duplexer；
Wherein, described duplexer includes：It includes dynamically reconfigurable phase-shift network：
At least one tunable radio frequency element, at least one tunable radio frequency element wherein said includes being coupled to wireless communication unit
Reception chain and the transmitting chain tunable radio frequency filter of one of them；And
At least one switch, it is operatively coupled to described tunable radio frequency element, and is by described dynamically reconfigurable
Phase-shift network radiofrequency signal, in response to dual-mode operation controllably to reconfigure described dynamically reconfigurable phase
Move network, optionally to support the operation of forward and reverse dual-mode simultaneously, wherein said dual-mode operation includes institute
State positive dual-mode operation and the operation of described opposition duplex pattern；
Wherein, described at least one switch for controlled with response to described dual-mode operation come selectivity provide described adjustable
At least one signal transmission path between radio-frequency filter and at least one antenna port described；And in described positive duplex
In the operation of pattern and described opposition duplex pattern, described tunable radio frequency filter coupled in series is at least one sky described
Between one of line end mouth and described reception chain and described transmitting chain.
2. wireless communication unit as claimed in claim 1 is it is characterised in that at least one switch described depends on the frequency of operation
Rate, optionally couples in described at least two paths between at least one antenna port and described tunable radio frequency element
Individual, to support described forward direction dual-mode operation or described reverse dual-mode operation.
3. wireless communication unit as claimed in claim 1 it is characterised in that described at least one switch includes two switch,
It is operationally connected in series to corresponding inductance, and is configured to be turned off to support in described emitter or described receptor
The operation of lowpass frequency pattern.
4. wireless communication unit as claimed in claim 3 is it is characterised in that described wireless communication unit further includes at least
One tunable capacitor is located at each the parallel path being connected to at least two switches.
5. wireless communication unit as claimed in claim 4 is it is characterised in that the first tunable capacitor is arranged to described in support
In emitter or described receptor, one of adjustable high-pass equipment response modes operation and the second tunable capacitor are configured
For supporting the adjustable low pass frequency response parallel to another corresponding inductance in described receptor or described emitter
Pattern operates.
6. wireless communication unit as claimed in claim 1 is it is characterised in that at least one switch described includes at least two and opens
Close：The first switch of described at least two switches is disposed for coupling described antenna port and emitter and described antenna port
First path and receptor between, for configuring the positive dual-mode operation of described emitter and described receptor；And
The second switch of described at least two switches is configured to couple described antenna port and described emitter and described antenna port
The second path and receptor between, the opposition duplex pattern operation of configuration emitter and receptor.
7. wireless communication unit as claimed in claim 1 is it is characterised in that at least one switch described includes at least one list
At least one of duplexer thrown extremely duplexers thrown, at least one multipole more more.
8. wireless communication unit as claimed in claim 1 is it is characterised in that wherein said dynamically reconfigurable phase shift net
Network includes adjustable phase response, forms following two parts：
Emitter phase-shift network and adjustable transmission radio-frequency (RF) component；With
By receptor and the adjustable reception radio-frequency (RF) component of receptor phase-shift network.
9. wireless communication unit as claimed in claim 8 is it is characterised in that some of this tunable phase shift network includes a collection
Total element part and reside in the part in described tunable radio frequency element.
10. wireless communication unit as claimed in claim 9 is it is characterised in that described wireless communication unit further includes：Control
Device processed, it is operatively coupled to described emitter and receptor, and wherein, tunable high-pass equipment responds and tunable low
Logical frequency response is to be controlled by described controller, is respectively provided for the tunable transmitting radio-frequency (RF) component tuning first with reference to series connection
Tunable capacitance, and combine tunable reception radio-frequency (RF) component tuning second tunable capacitance of another series connection accordingly.
11. wireless communication units as claimed in claim 1 are it is characterised in that at least one tunable radio frequency element described includes
At least one of variable band-pass filter and adjustable notch filter wave filter.
12. 1 radio-frequency modules it is characterised in that：Including duplexer, described duplexer includes dynamically reconfigurable phase shift net
Network：
At least one tunable radio-frequency (RF) component, at least one tunable radio-frequency (RF) component wherein said includes being coupled to radio frequency mould
The reception chain of block and the transmitting chain tunable radio-frequency filter of one of them；And
At least one switch, it is operatively coupled to described tunable radio-frequency (RF) component, and comes in response to dual-mode operation
Controlled reconfigure can dynamically reconfigurable phase-shift network, be by described can dynamically reconfigurable phase-shift network
Radiofrequency signal, optionally support dual-mode forward mode operation and reverse mode operation, wherein said dual-mode
Operation includes described forward direction dual-mode operation and the operation of described opposition duplex pattern；
Wherein, described at least one switch for controlled with response to described dual-mode operation come selectivity provide described adjustable
At least one signal transmission path between humorous radio-frequency filter and at least one antenna port described；And in described forward direction
In the operation of dual-mode and described opposition duplex pattern, described tunable radio-frequency filter coupled in series in described extremely
Between one of a few antenna port and described reception chain and described transmitting chain.
13. radio-frequency modules as claimed in claim 12 are it is characterised in that at least one switch described depends on the frequency of operation
Rate, optionally couples in described at least two paths between at least one antenna port and described tunable radio frequency element
Individual, to support a described forward direction dual-mode operation or described reverse dual-mode operation.
14. radio-frequency modules as claimed in claim 12 it is characterised in that described at least one switch includes two switch, its
Operationally it is connected in series to corresponding inductance, and be configured to be turned off to support low in described emitter or described receptor
The operation of logical frequency mode.
15. radio-frequency modules as claimed in claim 14 are it is characterised in that described radio-frequency module further includes that at least one is adjustable
Electric capacity is located at and is connected to the parallel path of each of at least two switches.
16. radio-frequency modules as claimed in claim 15 are it is characterised in that the first tunable capacitor is arranged to support described sending out
In emitter or described receptor, one of adjustable high-pass equipment response modes operation and the second tunable capacitor are configured to use
In the support adjustable low pass frequency response mould parallel with another corresponding inductance in described receptor or described emitter
Formula operates.
17. radio-frequency modules as claimed in claim 12 are it is characterised in that at least one switch described includes at least two and opens
Close：The first switch of at least two switches is disposed for coupling described antenna port and emitter and described antenna port and connects
Receive the first path between device, for configuring the described forward direction dual-mode operation of described emitter and described receptor；And
The second switch of described at least two switches is configured to couple described antenna port and described emitter and described antenna port
The described opposition duplex pattern operation of the second path and receptor between, configuration emitter and receptor.
18. radio-frequency modules as claimed in claim 12 are it is characterised in that described dynamically reconfigurable phase-shift network includes
Adjustable phase responds, and forms following two parts：
Emitter phase-shift network and adjustable transmission radio-frequency (RF) component；With
By receptor and the adjustable reception radio-frequency (RF) component of receptor phase-shift network.
19. radio-frequency modules as claimed in claim 18 are it is characterised in that some of this tunable phase shift network includes a lump
Element part and reside in the part in described tunable radio frequency element.
A kind of 20. methods of tuning wireless communication unit are it is characterised in that described communication unit includes at least one antenna end
Mouth, emitter and receptor, described emitter and receptor are operatively coupled at least one antenna described by duplexer
Port, wherein, described duplexer includes dynamically reconfigurable phase-shift network, and methods described includes：
It is emitter and the frequency mode of receptor determination operation；
The frequency mode of the determination according to operation, dynamically configures at least one of at least one switch path, with operable
Ground connects at least one antenna port to emitter or receptor；
Tune at least one tunable radio-frequency (RF) component in described emitter and described receptor, wherein said at least one is adjustable
Humorous radio-frequency (RF) component includes reception chain and the transmitting chain tunable rf filtering of one of them being coupled to described communication unit
Device；
To operate in response to dual-mode, selectivity provides described tunable radio frequency filter at least one switch described in dynamic configuration
At least one signal transmission path between ripple device and at least one antenna port described, wherein said dual-mode operation includes
Positive dual-mode operation and the operation of opposition duplex pattern；And in described forward direction dual-mode and described opposition duplex pattern two
In the operation of person, described tunable radio-frequency filter coupled in series at least one antenna port described and described reception chain and
Between one of described transmitting chain；
The other lamped element of at least one of at least one emitter and receptor described in being tuned at further, described in connection extremely
A few tunable radio-frequency (RF) component, thus dynamically reconfigure described dynamically reconfigurable phase-shift network with response to institute
State dual-mode operation, be the radiofrequency signal by described dynamically reconfigurable phase-shift network, optionally support described
The operation of positive dual-mode and the operation of described opposition duplex pattern.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361813717P | 2013-04-19 | 2013-04-19 | |
| US61/813,717 | 2013-04-19 | ||
| US14/252,786 | 2014-04-15 | ||
| US14/252,786 US9337991B2 (en) | 2013-04-19 | 2014-04-15 | Wireless communication unit, radio frequency module and method therefor |
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| Publication Number | Publication Date |
|---|---|
| CN104113356A CN104113356A (en) | 2014-10-22 |
| CN104113356B true CN104113356B (en) | 2017-03-01 |
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| CN201410158165.1A Active CN104113356B (en) | 2013-04-19 | 2014-04-18 | The method of wireless communication unit, radio-frequency module and tuning wireless communication unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9929768B2 (en) * | 2015-01-26 | 2018-03-27 | Huawei Technologies Co., Ltd. | System and method for TDD-FDD duplexing in a radio architecture |
| CN106301516B (en) * | 2016-08-08 | 2020-07-21 | 华为技术有限公司 | Diversity receiver and terminal |
| CN110022135A (en) | 2017-12-07 | 2019-07-16 | 英飞凌科技股份有限公司 | Tunable resonant element, filter circuit and method |
| JP7014308B2 (en) * | 2018-11-20 | 2022-02-01 | 株式会社村田製作所 | Extractor |
| CN109728835B (en) * | 2019-02-19 | 2024-03-12 | 深圳市飞亚达精密科技有限公司 | Circuit device with high isolation for multi-band transceiving |
| CN111613880B (en) * | 2020-06-10 | 2022-09-16 | 维沃移动通信有限公司 | Antenna structure and electronic device |
| CN112532271A (en) * | 2020-12-07 | 2021-03-19 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201976076U (en) * | 2011-01-21 | 2011-09-14 | 广州海格通信集团股份有限公司 | Diplexer |
| CN102510270A (en) * | 2011-11-04 | 2012-06-20 | 中兴通讯股份有限公司 | Duplexer, radio-frequency front module, multi-mode terminal and filtering method of duplexer |
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