A 0.25/spl mu/m CMOS RF front-end with a low cost patch antenna for GPS receivers

The design of an RF front-end with 0.25 mum CMOS process is presented with a low cost patch antenna for global positioning system (GPS) receivers. The patch antenna is designed on a low cost dielectric material, FR-4, with epsir = 4.2. The antenna is matched to a 50 Omega transmission line that is connected to a 5th order Chebyshev edge coupled band-pass filter with center frequency at 1.57542 GHz, and bandwidth of 20 MHz via a recessed line-feed. A single-ended narrow-band low-noise amplifier (LNA) is designed with a gain of 28 dB, and NF of 3.4 dB. The single balanced mixer gives a gain of 20 dB, and an IF of 178 MHz, with on chip LC tanks. The mixer NF is 8.6 dB. The front-end is an all NMOS design. Total power dissipation is 18 mW, with total gain of 44 dB, an IIP3 -30 dBm, and NF of 3.8 dB

[1]  T. Lee,et al.  A 1.5 V, 1.5 GHz CMOS low noise amplifier , 1996 .

[2]  Qiuting Huang,et al.  A 1.57-GHz RF front-end for triple conversion GPS receiver , 1998 .

[3]  Rinaldo Castello,et al.  Implementation of a CMOS LNA plus mixer for GPS applications with no external components , 2001, IEEE Trans. Very Large Scale Integr. Syst..

[4]  T.H. Lee,et al.  A 1.5 V, 1.5 GHz CMOS low noise amplifier , 1996, 1996 Symposium on VLSI Circuits. Digest of Technical Papers.

[5]  Oscal T.-C. Chen,et al.  A dual-band RF front-end for WCDMA and GPS applications , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[6]  T. Kadoyama,et al.  A complete single-chip GPS receiver with 1.6-V 24-mW radio in 0.18-/spl mu/m CMOS , 2003, 2003 Symposium on VLSI Circuits. Digest of Technical Papers (IEEE Cat. No.03CH37408).

[7]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[8]  Robert G. Meyer,et al.  Analysis and Design of Analog Integrated Circuits , 1993 .