Tuned LNA for RFICs using boot-strapped inductor

In this paper, the principle of operation of a new type of active inductor and its application to a tuned LNA are described. The design is optimized at 1.8 GHz. An integrated transformer in connection with a current amplifier realizes a "boot-strapped" inductor with a L/spl times/Q factor never obtained before at this frequency. This way a selective LNA with a 60 MHz bandwidth, corresponding to a Q of 30, was designed. The circuit exhibits a matched noise figure of 1.8 dB with 25.5 dB transducer power gain while dissipating 20.7 mW from a 3 V power supply.

[1]  J.N. Burghartz,et al.  Multilevel-spiral inductors using VLSI interconnect technology , 1996, IEEE Electron Device Letters.

[2]  Wei Li,et al.  High Q active inductor with loss compensation by feedback network , 1999 .

[3]  Chung-Yu Wu,et al.  The design of a 3-V 900-MHz CMOS bandpass amplifier , 1997 .

[4]  A. Monorchio,et al.  Design and simulation of active spiral inductors for RF integrated circuits , 1999, IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010).

[5]  Luca Fanucci,et al.  High-quality active inductors , 1999 .

[6]  Yannis Papananos,et al.  Novel Si integrated inductor and transformer structures for RF IC design , 1999, ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349).

[7]  Lawrence E. Larson.  Integrated circuit technology options for RFICs-present status and future directions , 1998 .

[8]  Lawrence E. Larson,et al.  Integrated circuit technology options for RFIC's-present status and future directions , 1997, Proceedings of CICC 97 - Custom Integrated Circuits Conference.

[9]  M. Pardoen,et al.  Reducing the substrate losses of RF integrated inductors , 1998 .

[10]  William B. Kuhn,et al.  Q-enhanced LC bandpass filters for integrated wireless applications , 1998 .

[11]  E. Sanchez-Sinencio,et al.  Programmable low noise amplifier with active-inductor load , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).

[12]  Masahiro Muraguchi,et al.  A novel loss compensation technique for high-Q broad-band active inductors , 1996, IEEE 1996 Microwave and Millimeter-Wave Monolithic Circuits Symposium. Digest of Papers.

[13]  A. J. Payne,et al.  A 3-V RF CMOS bandpass amplifier using an active inductor , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).