CN101166030B

CN101166030B - Multiple-input multiple-output radio transceiver

Info

Publication number: CN101166030B
Application number: CN2007101453047A
Authority: CN
Inventors: 加里·L.·休格; 罗伯特·M.·马苏奇; 戴维·G.·拉恩
Original assignee: IPR Licensing Inc
Current assignee: IPR Licensing Inc
Priority date: 2002-04-22
Filing date: 2003-04-21
Publication date: 2013-01-16
Anticipated expiration: 2023-04-21
Also published as: HK1118397A1; CN101166030A

Abstract

A MIMO radio transceiver to support processing of multiple signals for simultaneous transmission via corresponding ones of a plurality of antennas and to support receive processing of multiple signals detected by corresponding ones of the plurality of antennas. The radio transceiver provides, on a single semiconductor integrated circuit, a receiver circuit or path for each of a plurality of antennas and a transmit circuit or path for each of the plurality of antennas. Each receiver circuit downconverts the RF signal detected by its associated antenna to a baseband signal. Similarly, each transmit path upconverts a baseband signal to be transmitted by an assigned antenna.

Description

Multiple-input multiple-output radio transceiver

The application is dividing an application of on April 21st, 2003 application, the China that is entitled as " multiple-input multiple-output radio transceiver " application 03809045.7.

The application requires the priority (the whole of each priority application all are combined in this for reference) of following U.S. Provisional Patent Application:

The US60/374 of application on April 22nd, 2002,531;

The US60/376 of application on April 29th, 2002,722;

The US60/319 of application on June 21st, 2002,336;

The US60/319 of application on June 27th, 2002,360;

The US60/319 of application on July 30th, 2002,434.

Technical field

The present invention relates to a multiple-input and multiple-output (MIMO) wireless set, particularly about the multiple-input and multiple-output transceiver on a semiconductor integrated circuit.

Background technology

The present invention relates to multiple-input and multiple-output (MIMO) wireless set.

The main target of wireless communication system design is to use most effectively available spectrum.The example that increases the technology of spectrum efficiency comprises modulation technique such as the turbine coding qualifying shape coded modulation of coding, and multiple access technology such as code division multiple access access (CDMA).

Also have another recently academia very popular make the optimized mode of spectrum efficiency, namely use the MIMO radio system.The MIMO radio communication technology is proposed for, for example, and the 3G mobile telephone system.Yet, the failure of effort of before having developed the advantage of mimo system, one of reason be can not developing low-cost the MIMO radio.

Summary of the invention

The MIMO wireless set is provided to support the processing of a plurality of signals that the respective antenna through a plurality of antennas transmits simultaneously, and supports the reception ﹠ disposal by a plurality of signals of the respective antenna detection of a plurality of antennas.The MIMO wireless set is one of transceiver that is suitable for highly integrated and low cost fabrication.In addition, wireless set can be carried out transmission and receive operation in the part of RF frequency band even whole RF frequency band.Many transmission and receive path are useful especially for Supporting connectivity (joint) maximum ratio folding, and it also is called as synthetic pack (CBF) at this.

On a semiconductor integrated circuit, wireless set be provided for a plurality of antennas each receiver circuit or passage and be used for each transmission circuit or passage of a plurality of antennas.Each receive path makes the RF signal down by its associated antenna detection be transformed to baseband signal, and it uses Direct Transform method or superhet (different transform) method.Similarly, each transmission circuit will be to carrying out frequency up-conversion by the baseband signal of the antenna transmission of distributing, and it uses direct raising frequency method or multistage transform method.

A plurality of receptions and transmission channel are integrated on the same semiconductor integrated circuit.It provides very large cost and space/area to save.A use of the wireless set of the type is to receive and signal transmission, this signal when base band, use aforementioned CBF technology (thus, the weighted components of signal through each of a plurality of antennas send and at miscellaneous equipment by one or more antenna receptions) process to increase with another communication equipment be connected the limit (linkmargin).In this is used, it is highly important that each reception ﹠ disposal passage and each transmission process are mated according to amplitude and phase response usually.Because a plurality of receptions and transmission channel are integrated on the semiconductor element, treatment channel will be carried out preferably phase place and amplitude matches inherently, and will be followed the tracks of between treatment channel by the integrated any impact that causes of semiconductor.In addition, any operation that causes owing to variations in temperature changes also and will better follow the tracks of between treatment channel, because they are to be integrated on the same semiconductor integrated circuit.Low-cost wireless electricity transceiver is provided, for example, it does not need intermediate frequency (IF) filter, it has the power amplifier that is integrated on the wireless set integrated circuit (IC), it uses a frequency synthesizer and integrated a plurality of control switchs for transmission/reception and frequency band selection operation thereof.

With reference to following description taken together with the accompanying drawings, above-mentioned and other advantage will be more obvious.

Description of drawings

Fig. 1 is the general diagram with wireless set of a plurality for the treatment of channel that operate for multiple-input and multiple-output (MIMO).

Fig. 2 is the schematic diagram with MIMO wireless set of super-heterodyne architecture.

Fig. 3 is the schematic diagram with MIMO wireless set of variable intermediate frequency architecture.

Fig. 4 is the schematic diagram with MIMO wireless set of Direct Transform architecture.

Fig. 5 is the schematic diagram of the front-end section used with the MIMO wireless set.

Fig. 6-8 is the schematic diagram of the various front-end section used with the MIMO wireless set.

Fig. 9 uses to provide the schematic diagram of another radio front-end of 4 transmission and receive path for two wireless set IC in single equipment.

Figure 10 is the schematic diagram of another front-end section of using to provide 4 transmission and receive path with single wireless electricity transceiver IC.

Figure 11 and 12 is for illustrating digital to analog converter and analog to digital converter is the sketch that how to be shared in the MIMO wireless set.

Figure 13 and 14 is that the sketch how filter in the wireless set is shared to reduce the area of integrated circuit is shown.

Embodiment

Fig. 1 shows the block diagram of wireless set 10.Wireless set 10 is suitable for processing the radiofrequency signal by at least two antenna detections.The description of front concentrates on two antennas 12 and 14, reaches the related transmission of each antenna and the embodiment of receive path, but this same architecture can be popularized to support the N treatment channel for the N antenna.This wireless set is for supporting that aforementioned CBF technology is useful.The CBF system and method has a detailed description in following patent application: U.S. Patent application 10/164,728 application on June 19th, 2002, that be entitled as " system and method that is used for using the antenna diversity scheme that connects the maximum ratio merging "; U.S. Patent application 10/174,689 application on June 19th, 2002, that be entitled as " being used for using constant power to connect the system and method for the antenna diversity of maximum ratio merging "; And U.S. Patent application 10/064,482 application on July 18th, 2002, that be entitled as " system and method that is used for the connection maximum ratio merging of use signal procesing in time domain ".All these patent applications unsettled, common transfer all relate to the SNR that receives in a communication base station optimization with another communication apparatus communication the time, thereby increase scope between two equipment and the data rate of this scope.

An advantage of the technology that the patent application of mentioning in the above, be entitled as " being used for using constant power to connect the system and method for the antenna diversity of maximum ratio merging " is described is that the power output that requires from each antenna channels is lowered.Therefore, the size of power amplifier can be reduced, and it has lowered the whole semiconductor area of IC, and easier of other RF circuit on the IC and power amplifier isolation.

Wireless set 10 comprises Receiver And Transmitter.Receiver comprises receiver circuit 20 and 30.Receiver circuit or part 20 are used for antenna 12, reach receiver circuit or part 30 for antenna 14.Similarly, transmitter comprises for the transmission circuit 40 of antenna 12 and is used for the transmission circuit 60 of antenna 14.Each

receiver circuit

20 and 30 comprises frequency demultiplier 24, variable low-pass filter 26 and sampling hold circuit 28.Each

transmission circuit

40 and 60 comprises sampling hold circuit 42, low pass filter 44, upconverter 46, band pass filter 48 and power amplifier 50.Frequency demultiplier 24 can comprise to be carried out single-stage (directly) and transforms to base band or twin-stage and transform to intermediate frequency, arrive the circuit of base band again.Equally, upconverter 46 directly frequency up-conversion to RF or arrive first intermediate frequency, arrive RF again.Hereinafter 2-4 has described more specifically embodiment by reference to the accompanying drawings.Low pass filter 44 can be variable filter, to adapt to one of narrow band transmission mode of operation or several wideband transmit modes of operation.

Front end component 90 is connected to antenna 12 and 14 with wireless set 10.Switch 62 and 64 is connected respectively to antenna 12 and 14.Switch 62 selects the output of transmission circuit 60 or the input of receiver circuit 20 whether to be connected to antenna 12.Switch 64 selects the output of transmission circuit 40 or the input of receiver channel 30 whether to be connected to antenna 14.Band pass filter 22 is connected to a switch terminal of switch 62 and 64.In addition, low pass filter 52 and 54 is connected between the output of the power amplifier 50 in each

transmission circuit

40 and 60, and switch 62 is related with antenna 12 and 14 respectively with other switch terminal of 64.

The output of

receiver circuit

20 and 30 sampling hold circuit 28 is connected respectively to analog to digital converter (ADC) 70 and 72.The input of the sampling hold circuit 42 in the

transmission circuit

40 and 60 is connected respectively to digital to analog converter (DAC) 80 and 82.

DAC

80 and 82 can receive the first and second digital baseband signal transmissions as input, (complex-weighted) transmitted signal component of the complicated weighting of the single baseband signal that its representative will be transmitted simultaneously from antenna 12 and 14.The first and

second transmitter circuitrys

40 and 60 are processed and are used in fact simultaneously the first and second analog baseband signals of transmission.Same, antenna 12 and 14 can be distinguished detection first and second and receive signal, and it is the component that is transferred to the single signal of transceiver 10.The first receiver circuit 20 and the second receiver circuit 30 are processed in fact simultaneously the first and second reception signals and are synthesized with the weighting that allows resulting digital baseband to receive signal.

Interface is connected with control module and is provided to make wireless set 10 to carry out interface with other member such as Base-Band Processing parts to be connected.For example, interface and control module 92 receiving filters bandwidth control signals, centre frequency control signal, and switch controlling signal, all these signals are used for the operation of the particular elements of control wireless set.In addition, aforesaid signal can be obtained to be used for control processor or baseband part and to be directly connected to the pin of the suitable parts of transceiver 10.

The centre frequency control signal is controlled the centre frequency of local oscillator signal and the local oscillator signal that the upconverter in each

transmission circuit

40 and 60 46 uses of frequency demultiplier 24 uses in each receiver circuit 20 and 30.In addition, the cut-off frequency of filter bandwidht control signal control variable low-pass filter 26.Switch controlling signal is the positions that receive or transmit control switch 62 and 64 according to transceiver 10.

A distinguished function of wireless set 10 is the signals that receive simultaneously and process by each antenna 12 and 14 detections, to export the first and second suitably synthetic baseband receiving signals, it uses aforesaid CBF technology (in baseband processor) to obtain the signal that receives.On the contrary, wireless set 10 is processed simultaneously the first and second baseband analog signal transmissions (representing the weighted components of single transport signal) and they is exported to be used for respectively through antenna 12 and 14 transmission.Wireless set 10 shown in Fig. 1 can work in semiduplex mode, if necessary, also can work in full-duplex mode.

In addition, wireless set 10 can be carried out the MIMO operation in different bandwidth.For example, wireless set 10 can transmit or the reception signal in the single RF passage in radio frequency band, such as 20MHz 802.11 passages of 2.4GHz frequency band.Yet it also can be carried out MIMO operation with transmission in wider bandwidth or receive signal, such as higher data rate signal or take in fact the signal of whole frequency band, such as the 80MHz of 2.4GHz frequency band.The filter bandwidht control signal is set the cut-off frequency of the low pass filter 26 in each

receiver circuit

20 and 30 with the needed part of low-pass filtering RF bandwidth.Wireless set 10 also has the non-MIMO operation of only having reception, and wherein the output of each receive path can be obtained with sampling any part or whole RF frequency band, and it is realized by regulating low pass filter 26.A rear function is useful to the sample that obtains the RF frequency band with the analysis of spectrum of carrying out the RF frequency band.As further describing in connection with Figure 13 and 14, the signal that the low pass filter 44 in the transmitter can be removed and variable low-pass filter 26 not only had been used for receiving but also be used for signal transmission.

Surround receiver circuit

20 and 30 and the large dotted line frame of

transmission circuit

40 and 60 be intended to point out that all these parts comprise that power amplifier 50 can be embodied on the semiconductor integrated circuit (IC).Other parts also may be implemented on the IC, because semiconductor and filter design technology allow to do like this.The above has described the feature performance benefit of realizing by with the integrated multi transmission channel on the semiconductor and many receive paths.

Fig. 2-4 shows the more specifically example of the MIMO wireless set shown in Fig. 1.Fig. 2 shows the dual-band radio transceiver that adopts superhet (twin-stage) conversion architecture.Fig. 3 shows the dual-band radio transceiver that adopts stepping intermediate frequency (IF) conversion architecture, and it only uses a frequency synthesizer.Fig. 4 shows the dual-band radio transceiver that adopts Direct Transform (single-stage) architecture.Fig. 5 shows the front-end section that can use with the arbitrary wireless set shown in Fig. 2-4.

With reference to figure 2 and Fig. 5, wireless set 100 will be described.Wireless set 100 shown in Fig. 2 is superheterodyne receivers, and it can work in two different frequency bands, such as one of the unlicensed frequency band of 2.4GHz and the unlicensed frequency band of 5GHz.

As shown in Figure 5, wireless set 100 is designed to be connected to the first and

second antennas

102 and 104, RF front end component 105 comprises transmission/reception (T/R)

switch

106 and 108 through RF front end component 105, and it is connected respectively to antenna 102 and 104.Each T/

R switch

106 and 108 has the antenna terminal that is connected to its associated antenna, receives output and transmission input, and is transmission or reception and selective reception output or transmission input in response to the T/R switch controlling signal according to wireless set.Equally, be frequency band selection switch 110,112,114 and 116 in RF front end component 105, it selects the output of antennas from

switch

106 and 108 according to the frequency band of the signal that just is being transmitted or receiving.Frequency

band selection switch

110 and 112 is the frequency acceptance band selector switch, each all has the input of the reception output that is connected respectively to the first and second T/

R switches

106 and 108, and the first output is connected respectively to BPF120 and 124, the second outputs are connected respectively to BPF122 and 126.Frequency

band selection switch

114 and 116 is the transmission band selector switch, and each all has the first and second inputs and output.Frequency

band selection switch

114 and 116 first input end are connected respectively to LPF128 and 132, and switch 115 and the second input of 116 are connected respectively to LPF130 and 134.

Switch

114 and 116 output are connected respectively to the transmission input of the first and second T/

R switches

106 and 108.

Again with reference to figure 2, on the receiver side of wireless set 100, a receiver is arranged, it comprise with by the related receiver channel of the signal of antenna 102 detections or circuit 140 and with by the signal of antenna 104 detections related receiver channel or circuit 170.On transmission equipment side, a transmitter is arranged, it comprise the transmission channel related with antenna 102 or circuit 210 and with related transmission channel or the circuit 230 of antenna 104.

Receiver circuit

140 and 170 each all have two branch roads: the first branch road is processed the signal from the first radio frequency band, and the second branch road is processed the signal from the second radio frequency band.

More specifically, each branch road in the

receiver circuit

140 and 170 is connected to the respective filter in the band pass filter 120,122,124 and 126 in the RF front end component 105 shown in Fig. 5.In the first branch road of receiver circuit 140,142 and RF frequency mixers 144 that the RF signal are down converted to intermediate frequency (IF) from the first radio frequency band (RFB1) of a low noise amplifier (LNA) are arranged.In the second branch road of receiver circuit 140, a LNA152 and a RF frequency mixer 154 that the RF signal is down converted to IF from the second radio frequency band are arranged.IF filter (IFF) 145 is connected to frequency mixer 144 and frequency mixer 154, and is a variable amplifier 146, quad mixers (quad mixer) 148 and 156, and variable low-

pass filter

150 and 158 at the outlet side of IFF145.Sampling hold circuit 160 is connected to variable low-pass filter 150, and sampling hold circuit 162 is connected to variable low-pass filter 158.As hereinafter describing in detail, the first branch road of receiver circuit 140 (being comprised of LNA142 and frequency mixer 144) processes the signal of a RF frequency band (RFB1) of free antenna 102 detections.The second branch road of receiver circuit 140 (being comprised of amplifier 152 and frequency mixer 154) processes the signal of the 2nd RF frequency band (RFB2) of free antenna 102 detections.At any given time, receiver circuit 140 only has a branch road in work.Therefore, if the output impedance of

frequency mixer

144 and 154 is higher, IFF145 and variable power amplifier 146 can be shared (not needing extra switch) by branch

road.Quad mixers

148 and 156 produces in-phase signal (I) and quadrature (Q) signal of the signal of the input that offers variable amplifier 146.Thereby, in general, receiver circuit 140 has by RF frequency mixer (144 or 154, depend on and just use which frequency band branch road) the first frequency demultiplier of forming, it will receive signal down by first of antenna 102 (Fig. 5) detection and be mixed into intermediate-freuqncy signal, and

quad mixers

148 and 156 also is mixed into I and Q base-band analog signal with the further frequency reducing of intermediate-freuqncy signal.

Receiver circuit 170 has member 172-192, and it in receiver circuit 140, but is used to these mirror images to process from signal antenna 104 (Fig. 5) or a RF frequency band (RFB1) or the 2nd RF frequency band (RFB2).Be similar to receiver circuit 140, receiver circuit 170 has by RF frequency mixer (174 or 184, depend on which frequency band branch road just is used) the second frequency demultiplier of forming, it will receive signal down by second of antenna 104 detections be mixed into second intermediate-freuqncy signal the same with the IF of the first intermediate-freuqncy signal of producing in the receiver circuit 140, and

quad mixers

178 and 186 is mixed into I and Q base-band analog signal with the further frequency reducing of the 2nd IF signal.

Although not it should be understood that to illustrate, other member also can be present in the receiver circuit.For example, at LNA with between the frequency mixer of LNA back image-reject filter can be arranged.

Switch

200 and 202 is connected respectively to the sampling hold circuit in

receiver circuit

140 and 170, switching with being received between the related I of signal and the Q output by the first and second Analog Baseband of receiver circuit 140 and receiver circuit 170 outputs respectively, process by ADC being used for.In addition,

switch

270 and 280, receives as inputting with the output of DAC that the first and second analog baseband signals that will be transmitted will be provided as other function at transmission equipment side.

At the transmission equipment side of wireless set 100, two

transmission circuits

210 and 230 are arranged.In transmission circuit 210,

quad mixers

212 and 214 receives respectively I and Q data-signal as input, and it is mixed into IF by the intermediate frequency local oscillator signal with these signal frequency-

raisings.Quad mixers

212 and 214 output are amounted to and are connected to variable amplifier 216, and it is connected to RF frequency mixer 218 in turn.RF frequency mixer 218 is RF with the intermediate-freuqncy signal frequency up-conversion, or RFB1 or RFB2.

Band pass filter

222 and 224 is connected to the output of frequency mixer 218.Band pass filter 222 is related with RFB1, and band pass filter 224 is related with RFB2.Power amplifier 226 is connected to the output of band pass filter 222, and power amplifier 228 is connected to the output of band pass filter 224.The output of power amplifier 226 is connected to the input of low pass filter 128 (Fig. 5), and the output of power amplifier 228 is connected to the input of low pass filter 130 (Fig. 5).In general, the first transmission circuit 210 has the upconverter that is comprised of

quad mixers

212 and 214, it carries out the raising frequency mixing to baseband I and the Q signal that represents the first signal transmission, RF frequency mixer 218 further raising frequencies mix intermediate-freuqncy signal to produce a RF signal, and it will be connected to the first antenna 102 (Fig. 5).The output of RF frequency mixer 218 is connected to the logical branch road of band that is comprised of BPF222 and power amplifier 226 or BPF224 and power amplifier 228.

The transmission circuit 230 related with antenna 104 has member 232-248 and mirror image transmission circuit 210 to process the second signal transmission member.Be similar to the first transmission circuit 210, the second transmission circuit 230 has the upconverter that is comprised of

quad mixers

232 and 234, it carries out the raising frequency mixing to the I and the Q baseband signal that represent the second signal transmission, RF frequency mixer 238 further carries out raising frequency to intermediate-freuqncy signal and mixes to produce the 2nd RF signal, it will be connected to the second antenna 104 (Fig. 5), be used for transmitting in fact simultaneously with a RF signal.

Transmitter circuitry

210 and 230 input signal are to be provided to switch 270 and 280 from the DAC (not shown), switch is alternately selected between baseband I and Q signal, its be connected in the transmitter circuitry 210 sampling hold circuit separately 272 and 274 and transmitter circuitry 230 in sampling hold circuit separately 282 and 284.

Sampling hold circuit

272 and 274 is connected respectively to LPF276 and 278 in turn, and

sampling hold circuit

282 and 284 is connected respectively to LPF286 and 288.The baseband I of LPF276 and 278 filtering the first signal transmission and Q signal also offer respectively

quad mixers

212 and 214 with their output.Similarly, the baseband I of LPF282 and 288 filtering the second signal transmission and Q signal and their output offered respectively quad mixers 232 and 234.If the variable L PF in the receiver is shared for receiving and transmission process the then variable minimizing of the quantity of LPF.Figure 13 and 14 shows and makes variable L PF share the technology that is used for transmitting and receiving operation.

Because wireless set 100 is super-heterodyne device, the RF local oscillator signal and the IF local oscillator signal that are used for the radio frequency related with RFB1 and RFB2 need to be produced.IF synthesizer (IF LO synth) 250 and voltage controlled oscillator (VCO) 252 (comprise 90 ° of phase place members, not shown for simplifying) produce the IF local oscillator signal of homophase and quadrature phase shift, it is connected to frequency mixer 148,156,178 and 186 and frequency mixer 212,214,232 and 234.RF local oscillator synthesizer (RF LO synth) 260 is connected to VCO262,264 and 266, and it provides the different RF local oscillator signal frequency mixer 144,154 to receiver side, 174 and 184 and the

frequency mixer

218 and 238 of transmission equipment side.There are a plurality of VCO to be provided for the RF signal of a plurality of RF frequency bands.For example, VCO262 is provided for the RF local oscillator signal (being used for any RF passage or centre frequency) of the unlicensed frequency bands of 2.4GHz, VCO264 is provided for the RF local oscillator signal (being used for any RF passage or centre frequency) of the unlicensed frequency bands of low 5GHz, and VCO266 is provided for the RF local oscillator signal (being used for any RF passage or centre frequency) of the unlicensed frequency bands of high 5GHz.

Interface and control module 290 be connected to/from clock signal, data-signal and the enable signal of external equipment such as baseband processor and/or control processor.The transceiver control signal of externally-originated equipment can be connected to suitable transceiver components or be connected to the pin of suitable member by interface control module 290.The transceiver control signal comprises, for example, and RF centre frequency control signal, filter bandwidht control signal, transmit gain adjustment signal, receiving gain conditioning signal, and switch controlling signal.The specific RF passage that RF centre frequency control signal is controlled in which RF frequency band and this frequency band is used for RF LO synthesizer 260 and related VCO262,264 or 267 output local oscillator signals.The example that is suitable for the frequency synthesizer that uses with wireless set described here is described in U.S. Provisional Application 60/319,518 application on September 4th, 2002, that be entitled as " being used for the frequency synthesizer that the multiband super-heterodyne transceiver is used " to some extent.Filter bandwidht control signal control bandwidth varying low pass filter 150,158,180 and 188 is to work in broadband pattern (transmitting whole frequency band or its substantial part) or narrow-band pattern (transmitting a part as single RF passage).The variable amplifier 216 of transmission gain control signal control transmission equipment side and 236 gain, the variable amplifier 146 of receiving gain control signal control receiver side and 176 gain.Switch controlling signal is according to the operating state of wireless set 100 and working band control switch 106,108,110,112,114,116,200 and 202 position.

Most of member of wireless set 100 all is implemented in the semiconducter IC.The part of large dotted line has pointed out that those can be included in the member among the IC.Yet other member also can be embodied among the IC.

With reference to figure 2-5, will the operation of transceiver 100 be described.For example, RFB1 is the unlicensed frequency band of 2.4GHz, and RFB2 is one of 5GHz unlicensed frequency bands.It should be understood that the same system structure shown in Fig. 2 can be used for other application, and the application of 2.4/5GHz double frequency-band only is an example.For this example, IF is 902.5MHz, and the frequency of IF LO synth250 is output as 1805MHz, and the scope of the RF local oscillator signal of RF LO synthesizer output is that 3319.5 MHz are to 4277.5MHz.Variable low-pass filter 150,158,180 and 188 all is controllable, with a plurality of bandwidth in the filtering RF frequency band, for example so that by the MIMO reception ﹠ disposal of the signal of

antenna

102 and 104 detections from the 20MHz bandwidth until 80MHz or 100MHz bandwidth.Similarly, variable low-pass filter 276,278,286 and 288 all is controllable, with a plurality of bandwidth in the filtering RF frequency band, for example so that with the MIMO transmission process of the baseband signal that is transmitted from the 20MHz bandwidth until 80MHz or 100MHz bandwidth.In addition, as hereinafter described in conjunction with Figure 13 and 14, variable low-pass filter 150,158,180 and 188 variable sharing are used for receiving and transmission process.In a word, wireless set 100 does not work in semiduplex mode simultaneously at it in RFB1 or RFB2 transmission with when receiving.

Wireless set 100 also can work in the non-MIMO structure.For example, only have the output of a receive path can be with suitable variable low-pass filter group use to sample any part or the whole RF frequency band of wanting, thereby obtain some or all spectrum that data are analyzed the RF frequency band.

According to wireless set whether transmitting or receive and wherein the RF frequency band work, T/R switch and frequency band selection switch in the RF front end component 105 (Fig. 5) are all controlled.

For example, when wireless set 100 just when RFB1 receives,

switch

106 and 108 all is moved to their position on top to select the receiver side of transceiver 100.RF LO synthesizer 260 is controlled to export the RF local oscillator signal, and it is with specific (subband) of down conversion one from

RFB1.Switch

110 and 112 all is moved to their upper position with the corresponding branch road of select tape bandpass filter 120 and 124 (related with RFB1) and receiver circuit 140 and 170.120 pairs of signals by antenna 102 detections of filter carry out bandpass filtering, and 124 pairs of signals by antenna 104 detections of filter carry out bandpass filtering.Low pass filter 150,158,180 and 188 all is controlled to work in the needed bandwidth.Two signals by

antenna

102 and 104 detections can be signals different on the space of same signal transmission.Signal from antenna 102 is down converted to IF by frequency mixer 144, again by 145 filtering of IF filter, then is down converted to baseband I and Q signal by

quad mixers

148 and 156 and by

low pass filter

150 and 158 filtering.Each I and the Q signal that are derived from this signal are sampled maintenance or select to be used for outputing to ADC by switch 200.170 pairs of signals by antenna 104 detections of receiver circuit are carried out similarly operation.

Wireless set 100 is carried out MIMO transmission operation in a similar fashion.LPF276 in the transmitter, 278,286 and 288 (or LPF that shares of receiver) all is controlled to the needed bandwidth of filtering.In addition, RF LO synth 260 is controlled to the frequency band output RF local oscillator signal according to the signal that will be transmitted.Putative signal transmits the passage in RFB2, and

switch

106 and 108 is moved to their bottom position, thereby selects the transmission equipment side of wireless set 100.

Switch

114 and 116 is moved to their bottom position, to select the transmission circuit 210 related with RFB2 and 230 branch road.The analog baseband signal that is transmitted is comprised of the first and second signal components, and it will be transmitted simultaneously by

antenna

102 and 104 separately.Suitable RF local oscillator signal is output to frequency mixer 218 and 238.The I of the first transmitted signal component and Q signal by

quad mixers

212 and 214 frequency up-conversion to IF.Variable amplifier 216 is regulated the gain of resulting IF signal, and frequency mixer 218 transforms to RF with the IF signal frequency-raising.224 pairs of RF signals by frequency mixer 218 outputs of filter carry out bandpass filtering, and the output of 228 pairs of band pass filters 224 of power amplifier is amplified.The harmonic wave of the output of 130 pairs of power amplifiers 228 of low pass filter carries out filtering, and resulting output is connected to antenna 102 through switch 114 and 106.I and Q signal for the second transmitted signal component also similarly operate.Band pass filter 246 filtering RF signals, the signal after power amplifier 248 amplification filtering, next it be connected to low pass filter 134.Resulting filtered signal is connected to antenna 104 through

switch

116 and 108.

Fig. 3 shows the wireless set 100 ' that is similar to wireless set 100, but it has adopted variable or stepping IF architecture, rather than super-heterodyne architecture.Especially, in the receiver circuit of wireless set 100 ', the RF signal that receives depends on the RF local oscillator signal and is mixed into intermediate frequency by frequency reducing, and the IF filter is unwanted or optional.Similarly application of principle is in transmission circuit.Therefore, the output of the RF local oscillator signal of RF L0 synthesizer 260 is connected to except 4 circuit, its provide in turn the IF local oscillator signal to the

frequency mixer

148 and 156 in the receiver circuit 140, in the receiver circuit 170

frequency mixer

178 and 186, in the transmission circuit 210

frequency mixer

212 and 214, and transmission circuit 230 in frequency mixer 232 and 234.Except 4 circuit 265 produce the IF local oscillator signal based on the RF local oscillator signal that RF LO synthesizer 260 provides.Do not have the IF filter to be required, and only require a synthesizer (being used for the RF local oscillator signal).In addition, the class of operation of wireless set 100 ' is similar to the operation of wireless set 100.

Fig. 2 and 3 wireless set have some advantage, thereby so that they be suitable for highly integrated and implement cheaply.At first, the stepping IF architecture of the super-heterodyne architecture of Fig. 2 and Fig. 3 allows power amplifier is integrated in the transmitter of wireless set IC.This is because the power amplifier output frequency drops on the outside of VCO resonance range (turning range), thereby has avoided the injection genlock of VCO.This is unlikely in other architecture Direct Transform structure as shown in Figure 4.Secondly, the stepping IF transceiver of Fig. 3 does not need the IF filter, thereby has reduced the material cost of wireless set.Under some design parameter, even the superhet of Fig. 2 design also can be implemented as and not have the IF filter.The design of Fig. 3 has easier integrated power amplifier and does not need the two-fold advantage of IF filter.Therefore, the radio transceiver design of Fig. 3 may suit the requirements in the very important situation of cost, integrated level and IC size.

With reference now to Fig. 4,, it has described Direct Transform radio transceiver architecture 300.Be similar to wireless set 100, wireless set 300 has a plurality of

receiver circuits

310 and 340 in receiver, and has a plurality of transmission circuits 370 and 400 in transmitter.Receiver circuit is identical, and transmission circuit also is identical.In receiver circuit 310, two

amplifiers

312 and 314 that are connected to switch 316 are arranged.The signal of the bandpass filtering of the band pass filter frequency acceptance band RFB1 of amplifier 312 from RF front end component 105 (Fig. 2), and similarly, the signal of the bandpass filtering of amplifier 314 frequency acceptance band RFB2.The output of switch 316 is connected to variable amplifier 318 offers the signal of its input with adjusting gain.The output of variable amplifier 318 is connected to

frequency mixer

320 and 322, and it mixes to produce I and Q signal by the IF local oscillator signal with the reception signal down of amplifying.The output of frequency mixer 320 is connected to low pass filter 324, and the output of frequency mixer 322 is connected to low pass filter 326.For example, low pass filter 324 and 326 is third-order low-pass filter, and for better linearity, it can be on chip, away from the remainder of transceiver components.Low pass filter 324 and 326 output are connected respectively to variable low-pass filter 328 and 330.Variable low-

pass filter

328 and 330 variable controls are to change their cut-off frequency, to select arrowband (such as 10MHz) or broadband (such as 40MHz).Variable low-

pass filter

328 and 330 is connected respectively to sampling hold circuit 332 and 334.

Sampling hold circuit

332 and 334 is output as expression by baseband I and the Q signal of the signal of antenna 102 detections.Switch 336 is controlled between baseband I and Q signal alternate selection being used for being connected to single ADC, and saves the cost of the 2nd ADC.

Receiver circuit 340 has member 342-366, and it is identical with member in the receiver circuit 310.

Receiver circuit

310 and 340 is carried out the RF signal of institute's detection to Direct Transform or the zero intermediate frequency down conversion of base band.In general, the first receiver circuit 310 has the first frequency demultiplier that comprises

quad mixers

320 and 322, and it will receive the direct frequency reducing of signal by first of antenna 102 detections and be mixed into baseband I and Q signal.Similarly, the second receiver circuit 340 has the second frequency demultiplier that comprises

quad mixers

350 and 350, and it will receive the direct frequency reducing of signal by second of antenna 104 detections and be mixed into baseband I and Q signal.

Persons skilled in the art are appreciated that, in

receiver circuit

310 and 340,

quad mixers

320 and 322 and

quad mixers

350 and 352 can be the broadband mixer that can cover RFB1 and RFB2, the quad mixers of perhaps separating can be provided for each RF frequency band.

At transmission equipment side, transmission circuit 370 comprises the first and second

sampling hold circuits

372 and 374, and it receives I and the Q data-signal that is used for the first signal transmission from switch 371.

Sampling hold circuit

372 and 374 output are connected to low pass filter 376 and 378.

Low pass filter

376 and 378 output are connected respectively to quad mixers 380 and 382.

Quad mixers

380 and 382 will be mixed into output I and Q signal by the I of

low pass filter

376 and 378 filtering and Q signal output raising frequency, and it is merged and be connected to variable amplifier 384.Variable amplifier 384 is regulated the gain of a RF signal and is provided this signal to band pass filter 386 and 388, and it is related with RFB1 and RFB2 respectively.Band pass filter 386 and 388 output are connected to power amplifier 394 and 396.Power amplifier 390 and the 392 RF signals that amplify for frequency band RFB1 and RFB2, it is connected to RF front end 105.

Transmission circuit 400 has member 402-422, and it is identical with those members in the transmission circuit 370.The input of transmission circuit 400 is comprised of I and the Q signal of the second signal transmission, and it is alternately provided by switch 401.Thereby in general, the first transmission circuit 370 comprises a upconverter that is made of

quad mixers

380 and 382, and it is mixed into RFI and Q signal with baseband I and the direct raising frequency of Q signal, and RFI and Q signal are merged to form a RF signal.The second transmission circuit 400 comprises the upconverter that is made of

quad mixers

410 and 412, and it is mixed into RFI and Q signal with baseband I and the direct raising frequency of Q signal, and RFI and Q signal are merged to form the 2nd RF signal.

Dual modulus phase-lock loop (PLL) 430, VCO432,434 and 436,

square pulse module

438, and 90 ° of phase shifters 440 can be provided, with provide respectively suitable homophase and quadrature RF local oscillator signal to the

frequency mixer

320 and 322 in the receiver circuit 310, in the receiver circuit 370

frequency mixer

350 and 352, in the transmission circuit 370

frequency mixer

380 and 382, and transmission circuit 400 in frequency mixer 410 and 412.Bimodulus PLL430 be one for generation of the standard element of high-frequency signal.Square pulse module 438 is as frequency doubler, to reduce the pulling force (pull) of the VCO that is caused by power amplifier.For example, in order to be provided for the RF mixed frequency signal of 2.4GHz unlicensed frequency bands and high and low 5GHz unlicensed frequency bands, VCO432 produces the RF signal of 1200-1240MHz scope, and VCO434 produces the RF signal of 2575-2675MHz scope, and VCO436 produces the RF signal of 2862-2912MHz scope.

Be similar to wireless set 100, have control signal to be connected to suitable member with control operation.Wireless set 300 has the operating state identical with wireless set 100.The filter bandwidht control signal is according to the bandwidth of operation control variable low-pass filter 328,330,358 and 360 of transceiver 300.Receiving gain control signal control variable amplifier 318 and 348.Each switch in switch controlling signal control wireless set 300 and the front end component, it is to work in which frequency band in receiving mode or transmission mode and according to transceiver according to wireless set, RFB1 or RFB2, and control.RF centre frequency control signal is controlled bimodulus PLL410 and VCO412-416 according to which RF passage that transceiver works in which RF frequency band and this frequency

band.Variable amplifier

384 and 414 in the transmission gain control signal control transmission circuit.

Fig. 6-10 shows different front end components.In Fig. 6, front end 500 parts comprise the member that many and front end component 105 are identical, although slightly different on the structure.LPF128,130,132 and 134 can be integrated in wireless set IC upward or be combined in the radio front-end 500.Replace switch 106 and 108, duplexer 502 and 504 is used for carrying out frequency band selection from antenna 102 and 104.As is known in the art, duplexer is three port devices, and it has a common port and two other ports, and one is used for high-frequency signal, and one is used for low frequency signal.Thereby duplexer 106 and 108 is as the frequency band selection switch.In the example of Fig. 6, two frequency bands that are supported are 2.4GHz frequency band and 5.25GHz frequency band.Switch 110,112,114 and 116 is the transmission/reception switch, and it is to transmit or receiving to select suitable signal according to wireless set.For example, when wireless set during just by the signal in antenna 102 and the 104 transmission 2.4GHz frequency bands, duplexer 502 receives a 2.4GHz signal transmission and is connected to antenna 102 from switch 110, and duplexer 504 receives the 2nd 2.4GHz from switch 114 and transmits signal and be connected to antenna 104.All other position of the switch are uncorrelated in fact.Similarly, when the signal in the reception 5.25GHz frequency band, duplexer 502 will receive signal from a 5.25GHz of antenna 102 be connected to switch 112, and duplexer 504 will receive signal from the 2nd 5.25GHz of antenna 104 be connected to switch 116.Switch 112 is selected the output of duplexer 502, and switch 116 is selected the output of duplexer 504.

As is known in the art, wireless set is connected to baseband processor, and it can be independent integrated circuit, shown in the base band integrated circuit (BBIC) 510 in Fig. 6 and 7.

Fig. 7 shows the front end component 500 ' that is similar to front end component 500, but its transmission/reception switch is integrated on the wireless set IC effectively.The switch that many known technologies all can will be similar to the transmission/reception switch is integrated on the wireless set IC.When the transmission/reception switch was integrated in wireless set IC when upper, for each antenna, at each the branch road place for the duplexer of each antenna, quarter-wave elongate elements 515 is provided in the radio front-end 500 '.Fig. 8 shows this kind structure for an antenna 102, and only as an example, but it is repeated to be used for each antenna.When signal just is transmitted, the transmission/reception switch is switched to the terminal that is connected to ground, thereby the output of the signal of the corresponding power amplifier (PA) of transmitter is selected and is connected to duplexer, and when signal is received, it is switched to other terminal, so that receive signal by quarter-wave elongate elements 515, transmission/reception switch and be delivered to LNA in the receiver.Quarter-wave elongate elements 515 can be any quarter-wave transmission line.An embodiment of quarter-wave elongate elements 515 is the microstrip structures that are arranged on the printed circuit board (PCB).The quarter-wave feature of quarter-wave elongate elements 515 produces phase shift, and it is as impedance transformer, and according to the position of switch or the connection between short circuit band bandpass filter and the ground, or generation is opened circuit.

Wireless set IC shown in Fig. 6 and 7 and front-end architecture are useful for network interface unit (NIC), to stand as 802.11x WLAN.

Fig. 9 shows the front end component 600 that is connected with two wireless set IC interfaces, so that 4 passage MIMO radio transceiver device to be provided.An example of the use of the structure of the type is in the access point (AP) at WLAN.Yet until herein, described radio transceiver configurations is all for 2 passage MIMO operation, when using with above mentioned maximum ratio Merge Scenarios, and 4 passage MIMO operation even the larger limit that is connected with other device can be provided.

Front end component 600 is connected to 8 antenna 602-616 with two wireless set IC interfaces.BBIC660 is connected to two wireless set IC, its work in tandem to transmit single signal 4 weightings component or receive 4 components of single received signal.Antenna 602,606,610 and 614 is devoted to a frequency band, and such as the 2.4GHz frequency band, and antenna 604,608,612 and 616 is devoted to another frequency band, such as the 5GHz frequency band.In front end component 600,8 transmission/reception switch 620-634 are arranged, each is related with one of antenna 602-616 respectively.Also have 8 band pass filter 640-654 that are connected to separately one of transmission/reception switch 620-634.Transmission/reception switch 620-634 can be integrated on separately the wireless set IC, rather than as the part of front end component 600.Although be not shown specifically, LPF also is integrated on the wireless set IC.Above being similar to, the class of operation of front end component 600 described.Transmission/reception switch 620-634 is controlled to whether just working in transmission mode or receiving mode is selected suitable signal according to wireless set IC.

Figure 10 shows the front end component 600 ' that is similar to front end component 600, but it does not comprise the transmission/reception switch.In addition, wireless set 670 is monolithic IC of integrated 4 passages (it is included among two wireless set IC shown in Fig. 9).The transmission/reception switch is integrated on the wireless set IC670.The class of operation of front end component 600 ' is similar to the operation of front end component 600.It is 3,4 or the ability of the passages that separate that Figure 10 shows the quantity that determines in proportion the MIMO passage more.

Fig. 9 and 10 also shows wireless set 100,100 ' and 300, and it is configured in the Multi-instance to support the multichannel ability among communicator such as the AP.For example, as shown in Figure 9, a wireless set such as an access point, can be carried out with 2 passage MIMO of device on the channel and communicate by letter, and other wireless set can be carried out with 2 passage MIMO of device on another channel and communicates by letter.Replace interface to be connected to a baseband I C, but each interface is connected to baseband I C separately or the single baseband I C of double-channel work simultaneously.

Figure 11 and 12 shows a kind of structure, thus, is connected to the variable minimizing of quantity of DAC and the ADC of wireless set.Usually, for each signal that requires processing, independent DAC or ADC all should be required.Yet, in half-duplex radio transceiver, because the Sharing D/A of having an opportunity C and ADC do not occur simultaneously for transmission and reception operation.For example, Figure 11 shows a structure, and it comprises two ADC710 and 720 and three DAC730,740 and 750.ADC720 and DAC730 are shared.Switch 760 is chosen the input of ADC720, and switch 770 is selected the output of DAC730.Digital multiplexer (MUX) 780 is connected to ADC720 and exports to send therefrom, and is connected to DAC730 to adjust input there.ADC, DAC and digital MUX780 can be positioned on the integrated circuit that separates that is different from the wireless set integrated circuit.For example, these members can be positioned on the base band integrated circuit, and base band demodulator 790 and baseband modulator 795 are arranged on it.

The quantity of ADC is by making the Q signal that receives and transmission power level is signal digitalized is reduced with single ADC720.Similarly, the quantity of DAC can be reduced with converting transmission I signal and receiver gain control signal by sharing a single DAC730.Numeral MUX780 is provided as the signal (or transmission I signal or receiver gain control signal) of the input of shared DAC730.Similarly, the signal (digital received Q signal or Digital Transmission power level signal) by the ADC720 output of sharing sends to suitable destination by digital MUX780.

As mentioned above, make sharing of ADC and DAC be easy to a kind of way and provide switch 760 and 770.These switches can be positioned on the wireless set IC.The output of switch 760 is connected to shared ADC720, and input is connected to the LPF in output place of local oscillator, and it produces the Q signal that receives, and another input is connected to the output of power detector, and it produces transmission power level signal.Switch 760 is controlled to select one of two positions, and whether it will be used in the Q signal or the transmission power level signal that receive according to ADC is selected.Similarly, the input of switch 770 is connected to shared DAC730, and output is connected to the variable power amplifier in the receiver, and another output is connected to LPF, and it provides the transmission I signal to the homophase the machine frequency mixer in the transmitter.Switch 770 is controlled to select one of two positions, and it whether will be used to the receiver gain control signal according to the DAC that shares or the transmission I signal is selected.For each receive path/transmission channel in the transceiver pair, the structure shown in Figure 11 can be repeated.

It should be understood that switch 760 and 770 is optional.As shown in Figure 12, if wireless set IC is the half-duplex transceiver, then they can be replaced by the normal signal passage, this means that Receiver And Transmitter do not work simultaneously.Therefore, for example, the DAC730 that shares offers its whichsoever digital signal (transmission I signal or receiver gain control signal depend on that transceiver works in receiving mode or transmission mode) with conversion, and DAC730 will be in the analog version of two these signals of passages output.If being selected for by the DAC730 that shares, processes the transmission I signal, receiver will cut out, will be less than effect thereby the analog version that will transmit I signal in receive channel is connected to variable power amplifier, but it also will be connected to the in-phase local oscillator in the transmitter, and this needs.Replaced by the normal signal channel design if be used for the switch of shared ADC720, then similarly situation remains unchanged.

Single ADC and single DAC can be shared (because in the half-duplex transceiver, transmitter and receiver is not worked usually simultaneously) between the signal of transmitter and receiver.The signal that the above is identified only is the example that can be multiplexed to the transmitter and receiver signal of single ADC or single DAC.

Figure 13 and 14 shows the structure that allows to share LPF, and LPF is used for baseband receiving signals and the baseband signal of the wireless set of filtering Fig. 2-4.As an example, the single antenna passage of Direct Transform wireless set 300 is selected to illustrate the filter technology of sharing.For simply, some intermediate members are not illustrated such as variable amplifier and sampling hold circuit.LPF328 and 330 is shared with filtering and an antenna such as the antenna 102 related I that is received and Q signal (RXI and RX Q), and filtering is with the baseband transmission I and the Q signal (TXI and TX Q) that are transmitted.In the switch 710 and 720 each all has two inputs and an output that is connected respectively to the input of LPF328 and 330.Be connected to switch 710 input be reception I signal output and the baseband transmission I signal of quad mixers 320.Similarly, be connected to switch 720 input be reception Q signal output and the baseband transmission Q signal of quad mixers 322.Transmit/receive control signals is connected to switch 710 and 720 so that the terminal that the terminal that switch or selective reception I and Q signal are connected to or selection transmission I and Q signal are connected to.In Figure 13, suppose in the output impedance of each filter lower, and each load impedance higher (being typical in most analog ICs), thereby the variable summation of the output of each filter.Therefore, the output at filter only needs a multiplexer.The structure of Figure 14 is similar to Figure 15, but other switch 730 and 740 is provided, in case impedance is not aforesaid situation.

In a word, multiple-input and multiple-output (MIMO) wireless set is provided, and it comprises Receiver And Transmitter, and the two may be implemented in the same integrated circuit.Receiver comprises at least the first and second receiver circuits, and each receiver circuit is processed the signal from the respective antenna of the first and second antennas.The first receiver circuit comprises the first frequency demultiplier that is connected to the first antenna, and it will receive the signal down conversion to produce the first baseband signal by first of the first antenna detection.The second receiver circuit comprises the second frequency demultiplier that is connected to the second antenna, and it receives the signal down conversion to produce the second baseband signal with second of the second antenna detection.Each receiver circuit also can comprise low pass filter.Transmitter comprises at least the first and second transmitter circuitrys, and each transmitter circuitry is processed will be by the signal of the transmission of the respective antenna in the first and second antennas.The first transmitter circuitry comprises the first upconverter, and it carries out frequency up-conversion to produce a RF frequency signal to the first base-band analog signal.Similarly, the second transmitter circuitry comprises the second upconverter, and it carries out frequency up-conversion to produce the 2nd RF frequency signal to the second base-band analog signal.In the first and second transmitter circuitrys each also comprises band pass filter and power amplifier, and the two all can be integrated on the same integrated circuit as other transmitter components.

Similarly, multiple-input and multiple-output (MIMO) wireless set is provided, it comprises a receiver, receiver comprises at least the first and second receiver circuits, each receiver circuit is processed the signal from the respective antenna of the first and second antennas, and transceiver comprises that also one has the transmitter of at least the first and second transmitter circuitrys.Receiver And Transmitter can be embodied on the integrated circuit.The first receiver circuit comprises the first frequency demultiplier that is connected to the first antenna, and it receives signal to first of the first antenna detection and carries out down conversion to produce the first in-phase base band signal and the first digital orthogonal baseband signal.The second receiver circuit comprises the second frequency demultiplier that is connected to the second antenna, and it receives signal to second of the second antenna detection and carries out down conversion to produce the second in-phase base band signal and the second digital orthogonal baseband signal.Each receiver circuit can comprise that also low pass filter is with their homophase of filtering and orthogonal signalling.Transmitter comprises at least the first and second transmitter circuitrys, and each transmitter circuitry is processed will be by the signal of the transmission of the respective antenna in the first and second antennas.The first transmitter circuitry comprises the first upconverter, and it carries out frequency up-conversion to produce a RF frequency signal to the first homophase base-band analog signal and the first quadrature base-band analog signal.The second transmitter circuitry comprises the second upconverter, and it carries out frequency up-conversion to produce the 2nd RF frequency to the second homophase base-band analog signal and the second quadrature base-band analog signal.Each transmitter circuitry also can comprise band pass filter and power amplifier, and the two all can be implemented on the same integrated circuit as other member.

Description in front relate to MIMO wireless set with two antennas, and thereby when having two receiver circuits and two transmitter circuitrys, it should be understood that same concept described here can be extended for wireless set operation, that have N transmitter circuitry and N receiver circuit with N antenna generally.

Top description only is exemplary.

Claims

1. multiple-input multiple-output radio transceiver on single semiconductor integrated circuit comprises:

The receiver that comprises a plurality of receive paths, each receive path is associated and is configured to each receive path and will become baseband signal by the detected radiofrequency signal down conversion of the associated antenna of this receive path with one of them antenna in a plurality of antennas, and each receive path comprises the receiver circuit with frequency demultiplier that is associated with antenna; And

The transmitter that comprises a plurality of transmission channels, each transmission channel is assigned to one of them antenna in described a plurality of antenna and is configured to each transmission channel to carrying out frequency up-conversion by the baseband signal that is assigned with the antenna transmission of this transmission channel, and each transmission channel comprises the transmitter circuitry with upconverter that is assigned to antenna.

2. wireless set according to claim 1, also comprise the local oscillator that is connected to this receiver and this transmitter, this local oscillator is configured to provide respectively the frequency demultiplier of local oscillator signal to each receiver circuit in the described receiver circuit, and the upconverter of local oscillator signal to each transmitter circuitry in the described transmitter circuitry is provided respectively.

3. wireless set according to claim 2, wherein said receiver circuit is configured to process simultaneously the reception signal, processes the merging of the signal of gained to allow described receiver circuit.

4. wireless set according to claim 2, wherein said transmitter circuitry are configured to process baseband signal transmission when being used for corresponding radiofrequency signal.

5. wireless set according to claim 1, each receiver circuit in the wherein said receiver circuit comprises the single-stage Frequency mixing processing, directly is down converted to base band will receive signal.

6. wireless set according to claim 1, each receiver circuit in the wherein said receiver circuit comprises the secondary Frequency mixing processing, this secondary Frequency mixing processing is configured to transform to intermediate-freuqncy signal at public intermediate frequency place with receiving signal down, and then is down converted to baseband signal.