CN103297082A - Wireless communication unit, integrated circuit and method for calibrating transceiver - Google Patents
Wireless communication unit, integrated circuit and method for calibrating transceiver Download PDFInfo
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- CN103297082A CN103297082A CN2013100554864A CN201310055486A CN103297082A CN 103297082 A CN103297082 A CN 103297082A CN 2013100554864 A CN2013100554864 A CN 2013100554864A CN 201310055486 A CN201310055486 A CN 201310055486A CN 103297082 A CN103297082 A CN 103297082A
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Abstract
The invention provides a wireless communication unit, an integrated circuit and a method for calibrating a transceiver. The wireless communication unit is described that includes the transceiver; at least one antenna port operably coupled to the transceiver via at least one antenna switch; a radio frequency part of the transceiver that includes at least one tuneable radio frequency (RF) component; and a test signal generator for generating an RF test signal for receiver calibration. The radio frequency part includes a coupler located between the at least one tuneable RF component and the at least one antenna switch for coupling the RF test signal to or from the radio frequency part for calibration.
Description
Technical field
(Radio Frequency, RF) module refer to a kind ofly can support self-alignment radio frequency receiver front-end module especially relevant for a kind of radio frequency of wireless communication unit in the present invention.
Background technology
Wireless communication unit, for example portable radio, phone etc. are generally only supported the operation in the single radio frequency band, that is, and the employed operational frequency bands of communication system., because the quick growth of mobile communication, the number of frequency bands that the increasing various radio frequency standard that the mobile subscriber can use now, system and service will be supported also significantly increases.So, along with the improvement of radio-frequency (RF) communication system, the recent tendency of mobile communications device is to support the communication of a plurality of RF frequency bands, for example, supports communication between a plurality of communication standards or the communication between a plurality of region.Now, one typically is used for supporting the transceiver of communicating by letter, for example is that (Universal Mobile Telecommunications System UMTS), may need to support to surpass 10 kinds of different frequency bands to universal mobile telecommunications system.
Fig. 1 has shown the simple block diagram of typical mobile comm unit, mobile comm unit is called as moving user unit (Mobile Subscriber with the definition of cellular communication sometimes, MS), perhaps with the 3rd generation communication system (3rd Generation Partnership Project, 3GPP
TM) definition be called as user's equipment (User Equipment, UE).Wireless communication unit 100 comprises antenna 102, be coupled to duplexer filter or duplexer 104, duplexer filter or duplexer 104 are used for providing the isolation that receives between chain (receive chain) and the transmission chain (transmit chain) in wireless communication unit 100.
Receive chain, known in this area, comprise receiving front-end circuit 106, it effectively provides reception, filtering and intermediate frequency or fundamental frequency conversion.Receiving front-end circuit 106 coupled in series are to signal processing function module 108.Controller 114 also is coupled to receiving front-end circuit 106 and signal processing function module 108, and wherein the signal processing function module is to be realized by digital signal processor (DSP).Controller 114 also comprises storage device 116, storage device 116 selectivity store operation control parameter (operating regimes), for example decoding/encoding function, synchronous style (synchronisation patterns), sign indicating number sequence etc.
About sending chain, its generally comprise transmission/modulation circuit 122 and power amplifier (Power Amplifier, PA) 124, its intermediate power amplifier 124 is coupled to antenna 102.The instruction that response controller 114 is gone up in transmitter/modulation circuit 122 and power amplifier (PA) 124 operations.Coupler 110 is between PA124 and duplexer 104, be used for part signal is delivered to feedback path and delivered to the fundamental frequency treatment circuit subsequently, so make send signal can according to wireless communication unit when precondition and/or current radio frequency conditions optimised, for example, optimize the power control that sends signal based on the proximity (vicinity) of the communication unit that receives.
; the cost that makes the wireless communication unit support cover the wide frequency range of a plurality of frequency bands or a plurality of communication standards is: need in the wireless communication unit to comprise a plurality of parallel transceiver circuits and/or, the one or more needs in the parallel transceiver circuit can adjustable operation on a plurality of frequency ranges.Adopt above-mentioned arbitrary solution can bring a series of side effect in the wireless communication unit, comprise the higher quality of RF element needs, they can take a lot of silicon areas or module board area.And above-mentioned solution also can increase design complexities, because will satisfy performance requirement simultaneously on the frequency band of all supports.
Therefore, need a kind of framework and method of operation of improvement, can support a plurality of frequency ranges and/or a plurality of communication standard.
Summary of the invention
In view of this, the invention provides a kind of wireless communication unit and a kind of integrated circuit.
The invention provides a kind of wireless communication unit, comprise: transceiver; At least one antenna port is coupled to described transceiver via at least one duplexer; Described transceiver comprises the receiver part, and described receiver partly comprises at least one tunable radio frequency element; And test signal generator, for generation of the radio frequency testing signal of carrying out the receiver calibration operation, wherein said receiver partly comprises coupler, described coupler is used for the described radio frequency testing signal of coupling and partly carries out the receiver calibration operation to described receiver between described at least one tunable radio frequency element and described at least one duplexer.
The present invention provides a kind of integrated circuit in addition, comprises: front-end module, described front-end module comprise at least one antenna port, and described antenna port is couple to transceiver via at least one duplexer; Described transceiver comprises the receiver part, and described receiver partly comprises at least one tunable radio frequency element; The input port is couple to the test signal generator, is used for receiving the described radio frequency testing signal that produces and carries out the receiver calibration operation; Wherein said receiver partly comprises coupler, and described coupler is used for described radio frequency testing signal is coupled to described receiver part between described at least one tunable radio frequency element and described at least one duplexer, carries out the receiver calibration operation.
The present invention also provides a kind of method of calibrating receiver, described receiver comprises at least one tunable radio frequency element and at least one antenna port, described antenna port is couple at least one duplexer via RX path, the method of described calibration receiver comprises: produce the radio frequency testing signal, be used for the receiver calibration operation; Described radio frequency testing signal is coupled to a position in the described RX path, and described RX path is between described at least one tunable radio frequency element and described at least one duplexer; , through after described at least one tunable radio frequency element described radio frequency testing signal is handled at described radio frequency testing signal; And to the described radio frequency testing signal execution receiver calibration operation after handling.
The method of wireless communication unit of the present invention, integrated circuit and calibration receiver can be operated between a plurality of communication standards and/or a plurality of frequency band adjustablely.
Description of drawings
Fig. 1 has shown the simple block diagram of typical mobile comm unit.
Fig. 2 has shown the block diagram of wireless communication unit according to the embodiment of the present invention.
Fig. 3 shows an execution mode as the transceiver configuration 300 of the wireless communication unit among Fig. 2.
Fig. 4 shows as the duplexer of the wireless communication unit among Fig. 2 and the execution mode of coupler.
Fig. 5 shows another execution mode as the duplexer of the wireless communication unit among Fig. 2.
Fig. 6 has shown the method for self-calibrating flow process 600 of receiver.
Embodiment
Embodiments of the present invention will be described in the mode of wireless communication unit, for example are not to use person's equipment, and it has comprised at least one and has had the receiver at antenna port, and wherein the antenna port is coupled to antenna., those skilled in the art should be able to understand, and the inventive concept of mentioning herein can be implemented in any type of wireless communication unit that comprises receiver, for example the base station.
Further, embodiments of the present invention have been described the wireless communication unit that comprises transceiver; At least comprise an antenna port, be coupled to transceiver via at least one duplexer; The receiver of transceiver partly comprises at least one tunable radio frequency (RF) element; And the test signal generator, for generation of the RF test signal to the usefulness of receiver calibration.Described receiver partly comprises a coupler, between this at least one adjustable RF element and this at least one duplexer, is used for the RF test signal is coupled to the receiver part, to do the receiver calibration.
Please refer to Fig. 2, shown the block diagram of wireless communication unit according to the embodiment of the present invention, this wireless communication unit is called as moving user unit with cellular communication definition sometimes, perhaps with the 3rd generation communication system definition be called as user's equipment.
Receive chain and also comprise controller 214, be responsible for whole subscriber unit control.Controller 214 also is coupled to receiving front-end circuit 206 and signal processing function module 208, and signal processing function module 208 is generally realized by digital signal processor (DSP).Controller 214 also comprises storage device 216, and it is store operation control parameter optionally, for example decoding/encoding function, synchronous style, sign indicating number sequence etc.Timer 218 is coupled to controller 214, with the time sequential routine in the control wireless communication unit 200, for example signal of transmission or reception and time correlation.
About sending chain, it generally comprises input unit 220, and for example keyboard is connected serially to second antenna 201 through signal processing function module 208, transmission/modulation circuit 222 and power amplifier 224.Coupler 212 and transmitter-blocker cell 203 are between power amplifier 224 and transmitting antenna 201.Coupler 212 will be delivered to the fundamental frequency treatment circuit through the part of the transmission signal of transmitter-blocker cell 203 output via feedback path 213, and for instance, the fundamental frequency treatment circuit is arranged in transmission/modulation circuit 222 or signal processing function module 208.The instruction of the operation response controller 214 of transmission/modulation circuit 222 and power amplifier 224.
As shown in the figure, front-end module or integrated circuit 205 can be used to hold various front-end modules or element or circuit, for example the reception antenna switch in the present embodiment and coupling circuit 204, coupler 212, transmitter-blocker cell 203 and other RF element (not shown).
Send in the chain signal processing function module 208 can with receive chain in processor different and divide and be arranged.In addition, the signal processing function module 208 that single-processor constitutes can be used to implement to send and receive the two processing of signal, as shown in Figure 2.Significantly, the various elements in the wireless communication unit 200 can realize that final structure should be as the restriction of the scope of the invention just at the result of concrete application or design alternative with the form of discrete or integrated component.
Please refer to Fig. 3, it shows an execution mode of the transceiver configuration 300 of the wireless communication unit among Fig. 2.Transceiver configuration 300 comprises transceiver module or integrated circuit 301 and front-end module or integrated circuit 205.In this embodiment, transceiver module or integrated circuit 301 and front-end module or integrated circuit 205 all comprise transmission and RX path.
In this embodiment, transceiver configuration 300 comprises a plurality of parallel transmit paths (Tx1 – Txn) and RX path (Rx1 – Rxn).For instance, first transmit path is 2G high frequency band transmit path 320, its comprise in low power amplifier 322, power amplifier 224, front-end module or the integrated circuit 205 in transceiver module or the integrated circuit 301 the first front end filter 302(for example, low pass filter).First front end filter 302 is used for eliminating the harmonic components from power amplifier 224 outputs.The output of first front end filter 302 inputs to transmitter-blocker cell (being denoted as " SpnT ") 203, it can be silicon-on-insulator (Silicon On Insulator in some embodiments, SOI) duplexer, and can be controlled as the controller 214 among Fig. 2 in some embodiments.Second transmit path for example is 3G low-frequency band transmit path 325, it comprises low power amplifier 326, power amplifier 328 and front-end module in transceiver module or the integrated circuit 301 or another (second) front end filter (for example being band pass filter) 304 in the integrated circuit 205, and front end filter 304 is used for eliminating harmonic components and the noise in power amplifier 328 output signals.In an execution mode, front end filter 304 can be used inductor-capacitor, and (Inductance-Capacitance, LC) band-pass circuit is realized.Among the another one embodiment, front end filter 304 can be eliminated harmonic components not with the inductor-capacitor notch filter.
In present embodiment, transmitter-blocker cell 203(is the SOI duplexer in some embodiments) be shown as single pole multiple throw, it supports one or more transmit paths, and its output is couple to transmitting antenna 201 through coupler 212.All some is coupled to the power detecting path (power detector path Pdet) on 330, and inputs to power detecting device 332 via feedback path 213 through any signal of transmitter-blocker cell 203.Power detecting path 330 can be used for transmission power control and/or adjusts sending front end filter 304 or 302.
In present embodiment, transceiver configuration 300 has also comprised a plurality of parallel RX path (Rx1-Rxn).For instance, first RX path is that 2G high frequency band RX path 340, the second RX path are 3G low-frequency band RX path 345.First RX path 340 and second RX path 345 are via the reception antenna switch, be couple to antenna 202 and receive signal from antenna 202, duplexer can be SOI duplexer and coupling circuit (being denoted as " SPnT With coupling ") 310 in some embodiments.Front-end module or integrated circuit 205 also comprise the first adjustable RF filter 306, for example first band pass filter in first RX path; And the second adjustable RF filter 308, second band pass filter in second RX path for example is with the frequency that has received do not wanted in the erasure signal transmission signal of external blocking or other system (for example with), transmitted noise etc.In one of them execution mode, the first adjustable RF filter 306 and the second adjustable RF filter 308 can be implemented with the inductor-capacitor circuit.The first adjustable RF filter 306 in first RX path and the output of the second adjustable RF filter 308 in second RX path input to the adjustable RF amplifier 314 of low noise, 316 in receiver module or the integrated circuit 301 respectively.
In the execution mode of receiver operation, the test tone generation (Test Tone Generation, TTG) path 335 comprises test signal generator 312, is used for the RF test signal is couple to, for example, first RX path 340 or second RX path 345 or other RX path.It should be noted that, according to the embodiment of the present invention, be between reception antenna switch, coupling circuit 310, the first adjustable RF filter (for example band is logical or band stop filter), 306, the second adjustable RF filter (for example band is logical or band stop filter) 308, to carry out coupling operation.So, can adopt the technology of TTG, and TTG can directly be coupled to one or more RX path (Rx1-Rxn), allow the first adjustable RF filter 306 and/or the second adjustable RF filter 308, with and/or the adjustable RF amplifier 314 of one or more low noise, 318 carry out frequency adjustment more accurately.Concrete adjustment action is known by those skilled in that art, so repeat no more herein.
Though the present invention is in the description of execution mode, be example with the low pass filter in the front-end module or band pass filter, but it is contemplated that in other embodiments any suitable filter all may be utilized, for example band pass filter, low pass filter or band resistance (trap) filter.
Though some execution modes of duplexer of the present invention are represented with the single pole multiple throw in scheming, but it is contemplated that, in other embodiments, can adopt any suitable switch or any amount of switch to realize, this depends on the transmit path of support or the quantity of RX path, also depends on the structure of employing or the wireless communication standard of support.
Though some embodiments of the present invention are to show with adjustable RF filter in scheming or adjustable RF amplifier, but, it is contemplated that, in other embodiments, can adopt any suitable adjustable RF element, this depends on the transmit path of support or the quantity of RX path, also depends on the structure of employing or the wireless communication standard of support.
Though in the embodiments of the present invention to support specific wireless communication standard to describe, for example 2G and 3G standard,, it is contemplated that the wireless communication standard that can support any other in other execution mode.
The execution mode of reception antenna switch and coupling circuit 310 will further describe according to Fig. 4 and Fig. 5.
Please refer to Fig. 4, it shows as the duplexer of the wireless communication unit among Fig. 2 and the execution mode of coupler.As shown in Figure 3, in first operator scheme (general mode), in first RX path 340 and second RX path 345 one through reception antenna switch (being denoted as " SPnT ") 406, is couple to antenna 202 and receives signals from antenna 202.
In second operator scheme (reception calibration mode), test signal generator 312(can be integrated in the signal processing function module 208 in some embodiments) be used for producing the RF test signal, and the RF signal that produces is couple to, for example any in first RX path 340 or second RX path 345 or both are used for carrying out the usefulness that receives calibration operation.Coupling operation in the execution mode of Fig. 4 is to carry out via first electric capacity 402 or second electric capacity 404.In this operator scheme, first RX path 340 and second RX path 345 are not couple to antenna 202 by the 406 suitable controls of reception antenna switch with switching, do not receive signals from antenna 202 yet.In one embodiment, the suitable control of duplexer 406 can utilize signal processor or controller to carry out with switching, for example the controller among Fig. 2 214.
So, by allowing the RF test signal through first adjustable RF filter (for example band pass filter) 306 and the low noise adjustable amplifier 314 in first RX path, with and/or allow the RF test signal by the second adjustable RF filter (for example band pass filter) 308 and the adjustable RF amplifier 316 of low noise in second RX path, the RF test signal feeds back to signal processing function module (for example being the signal processing function module 208 among Fig. 2), thereby processed.The signal processing function module can then be determined the performance characteristics of each RX path, for example determine the gain response (gain response) of one or more adjustable elements on the certain frequency scope in each path, signal processing module 208 then can be adjusted one or more adjustable elements that need adjustment by control signal 420, optimizes or improve the performance of each adjustable element.Thereby concrete adjusts the known technology in this area that is operating as that adjustable element reaches performance optimization according to gain response, repeats no more herein.
Please refer to Fig. 5, it shows another execution mode as the duplexer in the wireless communication unit among Fig. 2.Particularly, it shows as the duplexer in the wireless communication unit among Fig. 2 and the execution mode of coupling circuit.Please in the lump with reference to figure 3, in first operator scheme (general mode), in first RX path 340 or second RX path 345 one is couple to antenna 202 via reception antenna switch 406, and receives signals from antenna 202.
In second operator scheme (reception calibration mode), test signal generator 312(in certain embodiments, can be integrated into signal processing function module 208) be coupled to for generation of the RF test signal and with the RF test signal that produces, one or two in first RX path 340 and second RX path 345 for example is to receive the usefulness of calibration operation.Coupling operation among the embodiment as shown in Figure 5 is through another one duplexer (being denoted as " SPnT ") 510 being carried out suitable control and handover operation is implemented.In an example, can be carried out by signal processor or controller suitable control and the switching of duplexer 406 and/or duplexer 510, as the controller 214 among Fig. 2.
In this operator scheme, first RX path 340 and second RX path 345 are same by to receiving suitable control and the switching of duplexer 406, are not couple to antenna 202 or receive signal from antenna 202.So, by allowing first adjustable RF filter (for example band pass filter) 306 and the low noise adjustable amplifier 314 of RF test signal by first RX path, with and/or allow the RF test signal by second adjustable RF filter (for example band pass filter) 308 and the low noise RF adjustable amplifier 316 in second RX path, the RF test signal feeds back in the signal processing function module and handles like this, for example is as the signal processing function module 208 among Fig. 2.Signal processing function module 208 then can be determined the performance characteristics of each RX path, for example determines the gain response of one or more adjustable RF elements on the certain frequency scope in each RX path.Signal processing function module 208 can then be adjusted the one or more adjustable elements that need adjustment by control signal 420, optimizes or improve their performance separately.
Please refer to Fig. 6, flow process 600 has shown the method for self-calibrating of receiver.Flow process 600 proceeds to step 610 then from step 605, and wherein receiver operates on normal mode of operation, for example from the antenna receiving signal of wireless communication unit.In other execution mode, flow process 600 can be skipped this step, calibrates the initialization receiver and just carry out receiver when receiver starts.In step 615, carry out one and determine operation then, determine whether receiver is expected execution or needed to carry out the receiver calibration operation.As if not expecting or do not need to carry out the receiver calibration operation that then flow process rebound for example turns back to step 610.
If expectation maybe needs to carry out the receiver calibration, then can produce the RF test signal in the step 620.Then in step 625, one or more duplexers (for example SOI reception antenna switch 406) are carried out suitable control and handover operation, allow the RF test signal through one or more RX path, but without SOI reception antenna switch 406.The RF test signal is through one or more adjustable elements, for example first adjustable RF filter (for example being band pass filter) 306 and the adjustable RF amplifier 314 of low noise.In some embodiments, the RF test signal can be passed through a plurality of RX path, or (each RX path is carried out parallel processing) simultaneously or continuous (each RX path is carried out serial process) process, therefore, comprise and allow the RF test signal by the second adjustable RF filter (for example being band pass filter) 308 and low noise RF amplifier 316, equally also by the first adjustable RF filter (for example being band pass filter) 306 and the adjustable RF amplifier 314 of low noise.
The RF test signal of exporting from one or more RX path is then handled by the signal processing function module 208 among Fig. 2 for example in step 630, determines the performance characteristics of the adjustable RF element of RX path or receiver then in step 635.Determined whether in step 640 that then adjustable RF element needs to adjust.In some embodiments, this comprises performance characteristics and the one or more performance characteristics of having stored will be in the step 635 determined and compare, and determines that then whether difference (performance error) between the ideal performance characteristic of the performance characteristics measured and storage is above a threshold value.If difference is very little maybe can be ignored, then receiver or adjustable RF element do not need to adjust, and handling process 600 is just returned step 610.If difference is higher relatively, for example surpassed a threshold value, receiver or adjustable RF element need to adjust, and then adjustable RF element is adjusted in step 645, and handling process 600 is returned step 610 then.
In some embodiments, the some or all of steps shown in the flow process all can be implemented in hardware; With and/or some or all of flow process shown in step can implement with software.
It is contemplated that aforesaid inventive concept can be used in the integrated circuit of any element, module or circuit that comprises radio frequency by the semiconductor maker.Also can further imagine, for instance, the semiconductor maker can be applied to inventive concept independently in the integrated circuit (IC) apparatus, also can be applied to application-specific integrated circuit (ASIC) (Application-Specific Integrated Circuit, ASIC) in, perhaps can be applicable in any subsystem component.
For the sake of clarity, with different functional element and processor embodiments of the present invention have been described above.But, clearly, any available function is distributed between different units or processor, for example, according to being that element or circuit in front-end module or transceiver module distributes its function separately, such realization technology does not exceed spirit of the present invention yet.
In addition, the function of carrying out with different processors or controller (for example the signal processing function module 208 among Fig. 2 or controller 214) can be carried out with same processor or controller.And specific functional unit only is intended for the reference to the appropriate means that described function is provided, and is not to be strict logic OR structure or the tissue physically of expression.
Various aspects of the present invention can both be implemented with any suitable form, comprise hardware, software, firmware or above-mentioned combination.At least a portion of the present invention optionally is used for maybe module component can being set at one or more processors and/or digital signal processor, for example the computer software that moves on the grid array device able to programme.Therefore, the assembly in the embodiments of the invention or element can be implemented with the mode that is fit to, and no matter are physics, and be functional, or logicality ground.In fact, function can be implemented with an independent unit, perhaps implements with a plurality of unit, perhaps implements with the part of other functional units.
Though the present invention describes with above-mentioned execution mode, be not to be the present invention to be defined as the particular form of describing in the execution mode.In fact, scope of the present invention only is to limit with claim.In addition, though feature of the present invention is with describing in the specific implementations, those of skill in the art can understand according to the present invention, and also the different feature in the available execution mode is come in conjunction with implementing.In the claims, described ' comprising ' do not get rid of other elements or step.
Therefore, the invention describes a kind of structure and corresponding operating method of improved wireless communication unit, it can support a plurality of frequency ranges and/or a plurality of communication standard, and it has eliminated aforementioned shortcoming of the prior art.
Though the present invention with the preferred embodiment explanation as above; yet be not to limit scope of the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; any change and the change made; all in protection scope of the present invention, specifically be as the criterion with defining of claim.
Claims (28)
1. wireless communication unit comprises:
Transceiver;
At least one antenna port is coupled to described transceiver via at least one duplexer;
Described transceiver comprises the receiver part, and described receiver partly comprises at least one tunable radio frequency element; And
The test signal generator, for generation of the radio frequency testing signal of carrying out the receiver calibration operation,
Wherein said receiver partly comprises coupler, and described coupler is used for the described radio frequency testing signal of coupling and partly carries out the receiver calibration operation to described receiver between described at least one tunable radio frequency element and described at least one duplexer.
2. wireless communication unit as claimed in claim 1, it is characterized in that, also comprise signal processor, be coupled to described receiver part, wherein said signal processor is used for receiving described radio frequency testing signal from described at least one tunable radio frequency element, and the described at least one tunable radio frequency element of corresponding adjustment.
3. wireless communication unit as claimed in claim 2, it is characterized in that, described signal processor is used for determining the performance characteristics of described at least one tunable radio frequency element and producing response signal according to the described radio frequency testing signal that receives, with performance characteristics comparison and the described at least one tunable radio frequency element of corresponding adjustment of described response signal and storage.
4. wireless communication unit as claimed in claim 1 is characterized in that, described at least one duplexer comprises at least one hilted broadsword and throws duplexer more.
5. wireless communication unit as claimed in claim 1 is characterized in that, described coupler comprises RF-coupled element.
6. wireless communication unit as claimed in claim 5 is characterized in that, described RF-coupled element more comprises at least one hilted broadsword and throws duplexer more.
7. wireless communication unit as claimed in claim 5 is characterized in that, described RF-coupled element comprises at least one capacitive element.
8. wireless communication unit as claimed in claim 5 is characterized in that, described RF-coupled element comprises at least one directional coupler.
9. wireless communication unit as claimed in claim 1 is characterized in that, described receiver partly comprises a plurality of RX path, and wherein each described RX path comprises at least one tunable radio frequency element.
10. wireless communication unit as claimed in claim 1 is characterized in that, described at least one tunable radio frequency element comprise tunable radio frequency filter and tunable radio frequency amplifier wherein at least one.
11. wireless communication unit as claimed in claim 1 is characterized in that, described at least one antenna port comprises be used to the first antenna port of being coupled to transmitting antenna and for the second antenna port of being coupled to the reception antenna port.
12. wireless communication unit as claimed in claim 1 is characterized in that, described transceiver also comprises the transmitter part, and described transceiver portion branch comprises at least one front end filter, at least one power amplifier and transmitter-blocker cell.
13. wireless communication unit as claimed in claim 12 is characterized in that, described transmitter-blocker cell is the silicon-on-insulator duplexer.
14. wireless communication unit as claimed in claim 12 is characterized in that, described at least one front end filter is the inductor-capacitor notch filter.
15. wireless communication unit as claimed in claim 12, it is characterized in that, signal through described transmitter-blocker cell is coupled to the power detecting path, and inputs to the power detecting device via feedback path, and wherein the power detecting path is used for adjusting described at least one front end filter.
16. an integrated circuit comprises:
Front-end module, described front-end module comprise at least one antenna port, and described antenna port is couple to transceiver via at least one duplexer;
Described transceiver comprises the receiver part, and described receiver partly comprises at least one tunable radio frequency element;
The input port is couple to the test signal generator, is used for receiving the radio frequency testing signal that produces and carries out the receiver calibration operation;
Wherein said receiver partly comprises coupler, and described coupler is used for described radio frequency testing signal is coupled to described receiver part between described at least one tunable radio frequency element and described at least one duplexer, carries out the receiver calibration operation.
17. integrated circuit as claimed in claim 16, it is characterized in that, more comprise signal processor, be couple to described receiver part, wherein said signal processor is used for receiving described radio frequency testing signal from described at least one tunable radio frequency element, and the described at least one tunable radio frequency element of corresponding adjustment.
18. integrated circuit as claimed in claim 17, it is characterized in that, described signal processor is used for determining the performance characteristics of described at least one tunable radio frequency element and producing response signal according to the described radio frequency testing signal that receives, the performance characteristics of described response signal and storage is compared, and the described at least one tunable radio frequency element of corresponding adjustment.
19. integrated circuit as claimed in claim 16 is characterized in that, described at least one duplexer comprises at least one hilted broadsword and throws duplexer more.
20. integrated circuit as claimed in claim 16 is characterized in that, described coupler comprises RF-coupled element, described RF-coupled element comprise by single pole multiple throw, at least one capacitive element and at least one directional coupler at least wherein at least one.
21. integrated circuit as claimed in claim 16 is characterized in that, described transceiver also comprises the transmitter part, and described transceiver portion branch comprises at least one front end filter, at least one power amplifier and transmitter-blocker cell.
22. integrated circuit as claimed in claim 21 is characterized in that, described transmitter-blocker cell is the silicon-on-insulator duplexer.
23. integrated circuit as claimed in claim 21 is characterized in that, described at least one front end filter is the inductor-capacitor notch filter.
24. integrated circuit as claimed in claim 21, it is characterized in that, signal through described transmitter-blocker cell is coupled to the power detecting path, and inputs to the power detecting device via feedback path, and wherein the power detecting path is used for adjusting described at least one front end filter.
25. a method of calibrating receiver, described receiver comprise at least one tunable radio frequency element and at least one antenna port, described antenna port is couple at least one duplexer via RX path, and the method for described calibration receiver comprises:
Produce the radio frequency testing signal, be used for the receiver calibration operation;
Described radio frequency testing signal is coupled to a position in the described RX path, and described RX path is between described at least one tunable radio frequency element and described at least one duplexer;
, through after described at least one tunable radio frequency element described radio frequency testing signal is handled at described radio frequency testing signal; And
Described radio frequency testing signal after handling is carried out the receiver calibration operation.
26. the method for calibration receiver as claimed in claim 25 is characterized in that, more comprises to determine whether receiver needs calibration, if need the then corresponding radio frequency testing signal that produces, to carry out the receiver calibration operation.
27. the method for calibration receiver as claimed in claim 25, it is characterized in that, the described radio frequency testing signal after handling is carried out the receiver calibration operation comprise: at least one performance characteristics of the described radio frequency testing signal after will handling and the performance characteristics of storage are relatively.
28. the method for calibration receiver as claimed in claim 25 is characterized in that, more comprises: after the receiver calibration, determine whether described at least one tunable radio frequency element needs the receiver adjustment, and adjust operation if determine then to carry out correspondence.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
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| US201261601964P | 2012-02-22 | 2012-02-22 | |
| US61/601,964 | 2012-02-22 | ||
| US13/771,093 | 2013-02-20 | ||
| US13/771,093 US9338664B2 (en) | 2012-02-22 | 2013-02-20 | Wireless communication unit, integrated circuit and method therefor |
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| CN103297082A true CN103297082A (en) | 2013-09-11 |
| CN103297082B CN103297082B (en) | 2015-07-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206717A (en) * | 2016-12-18 | 2018-06-26 | 是德科技股份有限公司 | Test system and test method |
| CN109417427A (en) * | 2016-06-28 | 2019-03-01 | 派赛公司 | Integrated circuit calibration framework |
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| CN112994736A (en) * | 2021-02-07 | 2021-06-18 | 锐石创芯（深圳）科技有限公司 | Radio frequency front-end module and antenna device |
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