A 1.5 V high-linearity CMOS mixer for 2.4 GHz applications

A folded-cascode mixer with a modified class-AB transconductor for 2.4 GHz ISM band applications is presented in this paper. The mixer is composed of a modified class-AB transconductor and a low-voltage design technique. The proposed architecture improves the performance of linearity in the RF front-end. Simulation results for the proposed mixer using TSMC 0.8 /spl mu/m mixed signal CMOS process are: input 1-dB compression point (P -1dB) -1.15 dBm, input third-order intercept point (IIP3) 11 dBm, power conversion gain 1 dB, and single side-band noise figure 17.3 dB. The mixer consumes 5.86 mA of current from a 1.5 V power supply.

[1]  Wes Hayward.  Introduction to Radio Frequency Design , 1982 .

[2]  John B. Shoven,et al.  I , Edinburgh Medical and Surgical Journal.

[3]  Qiang Li,et al.  CMOS RF mixer no-linearity design , 2001, Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257).

[4]  Bumman Kim,et al.  Linearity analysis of CMOS for RF application , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[5]  Ro-Min Weng,et al.  A 1.5 V high gain CMOS mixer for 2.4-GHz applications , 2001, ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196).

[6]  Salvatore Pennisi,et al.  High-linear class AB transconductor for high-frequency applications , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[7]  C.F. Au-Yeung,et al.  CMOS mixer linearization by the low-frequency signal injection method , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[8]  Mohammed Ismail,et al.  Analysis of nonlinearities in RF CMOS amplifiers , 1999, ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357).

[9]  B. Gilbert,et al.  The MICROMIXER: a highly linear variant of the Gilbert mixer using a bisymmetric Class-AB input stage , 1997, IEEE J. Solid State Circuits.

[10]  J.P.K. Gilb.  Bluetooth radio architectures , 2000, 2000 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Digest of Papers (Cat. No.00CH37096).

[11]  Barrie Gilbert,et al.  The multi-tanh principle: a tutorial overview , 1998, IEEE J. Solid State Circuits.

[12]  T. Manku,et al.  A charge-injection method for Gilbert cell biasing , 1998, Conference Proceedings. IEEE Canadian Conference on Electrical and Computer Engineering (Cat. No.98TH8341).

[13]  T. Manku,et al.  A low-voltage design technique for RF integrated circuits , 1998 .

[14]  Wu-Shiung Feng,et al.  A 2.4-GHz CMOS down-conversion doubly balanced mixer with low supply voltage , 2001, ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196).