1134 半导体学报 第29卷 20(a) Atten 28 dB -order Signal 10 A3-order 0 DC Couple -10 -20 IIP3=10dBm Marker -30 500.800kHz 3 LgAv -4.32dBm -40 50 -60 -7 30-25-20-15-10-5051015 Input/dBm E酬91kh S414.56ms(G810时3) 80 ” Fig.11 Output spectrum in a two-tone test 60 .1-order 40 A 2-order 20 with approximately 250kHz of corner frequency for 0 flicker noise. IIP2 =58dBm -20 The measurement results are summarized and 40 compared with some recently published mixers in Ta- -60 ble 2.The presented mixer shows high linearity and low power consumption,achieving the highest lineari- -8050-20-i0010203040506070 Input/dBm ty FOM among these mixers. Fig.12 Measured linearity (a)Measured IIP3:(b)Measured 1IP2 Conclusion signed and optimized for UHF RFID reader applica- The performance of a quadrature mixer with a tions.Measurement results show that the presented shared transconductor is analyzed and validated, mixer achieves low power and high linearity without which indicates its advantage over a conventional Gil- degrading other performance measures,which indi- bert mixer pair in commutating mode.A quadrature cates its feasibility in low cost zero-IF or low-IF ap- down-conversion mixer based on this topology is de- plications. Table 2 Performance summary and comparison Reference Kim[ Klumperinkts] Vidojkovic[10] Liuti] This work Frequency/GHz 2.4 1 2.4 1.63 0.915 CG/dB 16.5 12 15.7 6.63 12.5 IIP3/dBm 9 5 1 1.5 10 SSB NF/dB 17.2 22.3 12.9 21.4 17.6 Power/mW 5.4 4 8.1 N/A 2.7 FOM/dB 18.18 10.98 7.62 N/A 18.19 0.18m 0.18m 0.18m 0.18m 0.18m Process CMOS CMOS CMOS CMOS CMOS Acknowledgments The authors would like to thank ture mixer with improved noise,gain,and image rejection.IEEE Lee Yang,Duo Xinzhong of SMIC (Shanghai)for International Symposium on Circuits and Systems,2001.4:786 [4] Lee T H.The design of CMOS radio-frequency integrated cir- chip fabrication,and Hu Haiyang,Lu Hongliang of cuits.2nd ed.Cambridge University Press.2004 Agilent Technologies Co.,Ltd.,Shanghai Branch for [5]Terrovitis M T,Meyer R G.Intermodulation distortion in current- chip testing. commutating CMOS mixer.IEEE J Solid-State Circuits,2000,35 (10):1461 [6] Darabi H.Abidi AA.Noise in RF-CMOS mixers:a simple physi- References cal model.IEEE J Solid-State Circuits.2000.35(1):15 [7]Kim T W.Kim B.Lec K.Highly lincar receiver front-end adop- [1]EPCTM Radio Frequency Identity Protocols Class-1 Generation-2 ting MOSFET transconductance linearization by multiple gated UHF RFID Protocol for Communications at 860MHz~960MHz transistors.IEEE J Solid-State Circuits,2004.39(1):223 Version 1.0.9.EPCglobal Inc.,2005 [8]Kim J.Oh H.Chung C.et al.High performance npn BITs in [2]Razavi B.RF microclectronics.Upper Saddle River.New Jersey: standard CMOS process for GSM transceiver and DVB-H tuner Prentice Hall PTR,1998 IEEE Radio Frequency Integrated Circuits(RFIC)Symposium. 3 Harvey J,Harjani R.Analysis and design of an integrated quadra- 2006半 导 体 学 报 第２９卷 犉犻犵．１１ 犗狌狋狆狌狋狊狆犲犮狋狉狌犿犻狀犪狋狑狅狋狅狀犲狋犲狊狋 狑犻狋犺犪狆狆狉狅狓犻犿犪狋犲犾狔２５０犽犎狕狅犳犮狅狉狀犲狉犳狉犲狇狌犲狀犮狔犳狅狉 犳犾犻犮犽犲狉狀狅犻狊犲． 犜犺犲 犿犲犪狊狌狉犲犿犲狀狋狉犲狊狌犾狋狊 犪狉犲 狊狌犿犿犪狉犻狕犲犱 犪狀犱 犮狅犿狆犪狉犲犱狑犻狋犺狊狅犿犲狉犲犮犲狀狋犾狔狆狌犫犾犻狊犺犲犱犿犻狓犲狉狊犻狀犜犪 犫犾犲２．犜犺犲狆狉犲狊犲狀狋犲犱 犿犻狓犲狉狊犺狅狑狊犺犻犵犺犾犻狀犲犪狉犻狋狔犪狀犱 犾狅狑狆狅狑犲狉犮狅狀狊狌犿狆狋犻狅狀，犪犮犺犻犲狏犻狀犵狋犺犲犺犻犵犺犲狊狋犾犻狀犲犪狉犻 狋狔犉犗犕犪犿狅狀犵狋犺犲狊犲犿犻狓犲狉狊． ５ 犆狅狀犮犾狌狊犻狅狀 犜犺犲狆犲狉犳狅狉犿犪狀犮犲狅犳犪狇狌犪犱狉犪狋狌狉犲 犿犻狓犲狉狑犻狋犺犪 狊犺犪狉犲犱 狋狉犪狀狊犮狅狀犱狌犮狋狅狉 犻狊 犪狀犪犾狔狕犲犱 犪狀犱 狏犪犾犻犱犪狋犲犱， 狑犺犻犮犺犻狀犱犻犮犪狋犲狊犻狋狊犪犱狏犪狀狋犪犵犲狅狏犲狉犪犮狅狀狏犲狀狋犻狅狀犪犾犌犻犾 犫犲狉狋犿犻狓犲狉狆犪犻狉犻狀犮狅犿犿狌狋犪狋犻狀犵 犿狅犱犲．犃 狇狌犪犱狉犪狋狌狉犲 犱狅狑狀犮狅狀狏犲狉狊犻狅狀 犿犻狓犲狉犫犪狊犲犱狅狀狋犺犻狊狋狅狆狅犾狅犵狔犻狊犱犲 犉犻犵．１２ 犕犲犪狊狌狉犲犱犾犻狀犲犪狉犻狋狔 （犪）犕犲犪狊狌狉犲犱犐犐犘３；（犫）犕犲犪狊狌狉犲犱 犐犐犘２ 狊犻犵狀犲犱犪狀犱狅狆狋犻犿犻狕犲犱犳狅狉犝犎犉 犚犉犐犇狉犲犪犱犲狉犪狆狆犾犻犮犪 狋犻狅狀狊．犕犲犪狊狌狉犲犿犲狀狋狉犲狊狌犾狋狊狊犺狅狑 狋犺犪狋狋犺犲狆狉犲狊犲狀狋犲犱 犿犻狓犲狉犪犮犺犻犲狏犲狊犾狅狑狆狅狑犲狉犪狀犱犺犻犵犺犾犻狀犲犪狉犻狋狔狑犻狋犺狅狌狋 犱犲犵狉犪犱犻狀犵狅狋犺犲狉狆犲狉犳狅狉犿犪狀犮犲 犿犲犪狊狌狉犲狊，狑犺犻犮犺犻狀犱犻 犮犪狋犲狊犻狋狊犳犲犪狊犻犫犻犾犻狋狔犻狀犾狅狑犮狅狊狋狕犲狉狅犐犉狅狉犾狅狑犐犉犪狆 狆犾犻犮犪狋犻狅狀狊． 犜犪犫犾犲２ 犘犲狉犳狅狉犿犪狀犮犲狊狌犿犿犪狉狔犪狀犱犮狅犿狆犪狉犻狊狅狀 犚犲犳犲狉犲狀犮犲 犓犻犿［７］ 犓犾狌犿狆犲狉犻狀犽［９］ 犞犻犱狅犼犽狅狏犻犮［１０］ 犔犻狌［１１］ 犜犺犻狊狑狅狉犽 犉狉犲狇狌犲狀犮狔／犌犎狕 ２．４ １ ２．４ １．６３ ０９１５ 犆犌／犱犅 １６．５ １２ １５．７ ６．６３ １２．５ 犐犐犘３／犱犅犿 ９ ５ １ １．５ １０ 犛犛犅犖犉／犱犅 １７．２ ２２．３ １２．９ ２１．４ １７．６ 犘狅狑犲狉／犿犠 ５．４ ４ ８．１ 犖／犃 ２．７ 犉犗犕／犱犅 １８．１８ １０．９８ ７．６２ 犖／犃 １８．１９ 犘狉狅犮犲狊狊 ０．１８μ犿 犆犕犗犛 ０１８μ犿 犆犕犗犛 ０１８μ犿 犆犕犗犛 ０１８μ犿 犆犕犗犛 ０．１８μ犿 犆犕犗犛 犃犮犽狀狅狑犾犲犱犵犿犲狀狋狊 犜犺犲犪狌狋犺狅狉狊狑狅狌犾犱犾犻犽犲狋狅狋犺犪狀犽 犔犲犲 犢犪狀犵，犇狌狅 犡犻狀狕犺狅狀犵狅犳犛犕犐犆 （犛犺犪狀犵犺犪犻）犳狅狉 犮犺犻狆犳犪犫狉犻犮犪狋犻狅狀，犪狀犱 犎狌 犎犪犻狔犪狀犵，犔狌 犎狅狀犵犾犻犪狀犵狅犳 犃犵犻犾犲狀狋犜犲犮犺狀狅犾狅犵犻犲狊犆狅．，犔狋犱．，犛犺犪狀犵犺犪犻犅狉犪狀犮犺犳狅狉 犮犺犻狆狋犲狊狋犻狀犵． 犚犲犳犲狉犲狀犮犲狊 ［１］ 犈犘犆犜犕 犚犪犱犻狅犉狉犲狇狌犲狀犮狔犐犱犲狀狋犻狋狔犘狉狅狋狅犮狅犾狊犆犾犪狊狊１犌犲狀犲狉犪狋犻狅狀２ 犝犎犉犚犉犐犇犘狉狅狋狅犮狅犾犳狅狉犆狅犿犿狌狀犻犮犪狋犻狅狀狊犪狋８６０犕犎狕～９６０犕犎狕 犞犲狉狊犻狅狀１．０．９，犈犘犆犵犾狅犫犪犾犐狀犮．，２００５ ［２］ 犚犪狕犪狏犻犅．犚犉犿犻犮狉狅犲犾犲犮狋狉狅狀犻犮狊．犝狆狆犲狉犛犪犱犱犾犲犚犻狏犲狉，犖犲狑犑犲狉狊犲狔： 犘狉犲狀狋犻犮犲犎犪犾犾犘犜犚，１９９８ ［３］ 犎犪狉狏犲狔犑，犎犪狉犼犪狀犻犚．犃狀犪犾狔狊犻狊犪狀犱犱犲狊犻犵狀狅犳犪狀犻狀狋犲犵狉犪狋犲犱狇狌犪犱狉犪 狋狌狉犲犿犻狓犲狉狑犻狋犺犻犿狆狉狅狏犲犱狀狅犻狊犲，犵犪犻狀，犪狀犱犻犿犪犵犲狉犲犼犲犮狋犻狅狀．犐犈犈犈 犐狀狋犲狉狀犪狋犻狅狀犪犾犛狔犿狆狅狊犻狌犿狅狀犆犻狉犮狌犻狋狊犪狀犱犛狔狊狋犲犿狊，２００１，４：７８６ ［４］ 犔犲犲犜 犎．犜犺犲犱犲狊犻犵狀狅犳犆犕犗犛狉犪犱犻狅犳狉犲狇狌犲狀犮狔犻狀狋犲犵狉犪狋犲犱犮犻狉 犮狌犻狋狊．２狀犱犲犱．犆犪犿犫狉犻犱犵犲犝狀犻狏犲狉狊犻狋狔犘狉犲狊狊，２００４ ［５］ 犜犲狉狉狅狏犻狋犻狊犕犜，犕犲狔犲狉犚犌．犐狀狋犲狉犿狅犱狌犾犪狋犻狅狀犱犻狊狋狅狉狋犻狅狀犻狀犮狌狉狉犲狀狋 犮狅犿犿狌狋犪狋犻狀犵犆犕犗犛犿犻狓犲狉．犐犈犈犈犑犛狅犾犻犱犛狋犪狋犲犆犻狉犮狌犻狋狊，２０００，３５ （１０）：１４６１ ［６］ 犇犪狉犪犫犻犎，犃犫犻犱犻犃 犃．犖狅犻狊犲犻狀犚犉犆犕犗犛犿犻狓犲狉狊：犪狊犻犿狆犾犲狆犺狔狊犻 犮犪犾犿狅犱犲犾．犐犈犈犈犑犛狅犾犻犱犛狋犪狋犲犆犻狉犮狌犻狋狊，２０００，３５（１）：１５ ［７］ 犓犻犿 犜 犠，犓犻犿 犅，犔犲犲犓．犎犻犵犺犾狔犾犻狀犲犪狉狉犲犮犲犻狏犲狉犳狉狅狀狋犲狀犱犪犱狅狆 狋犻狀犵 犕犗犛犉犈犜狋狉犪狀狊犮狅狀犱狌犮狋犪狀犮犲犾犻狀犲犪狉犻狕犪狋犻狅狀犫狔 犿狌犾狋犻狆犾犲犵犪狋犲犱 狋狉犪狀狊犻狊狋狅狉狊．犐犈犈犈犑犛狅犾犻犱犛狋犪狋犲犆犻狉犮狌犻狋狊，２００４，３９（１）：２２３ ［８］ 犓犻犿 犑，犗犺 犎，犆犺狌狀犵犆，犲狋犪犾．犎犻犵犺狆犲狉犳狅狉犿犪狀犮犲狀狆狀 犅犑犜狊犻狀 狊狋犪狀犱犪狉犱犆犕犗犛狆狉狅犮犲狊狊犳狅狉犌犛犕狋狉犪狀狊犮犲犻狏犲狉犪狀犱犇犞犅犎狋狌狀犲狉． 犐犈犈犈犚犪犱犻狅犉狉犲狇狌犲狀犮狔犐狀狋犲犵狉犪狋犲犱犆犻狉犮狌犻狋狊（犚犉犐犆）犛狔犿狆狅狊犻狌犿， ２００６ １１３４