Title :
A wideband CMOS LNA design approach
Author :
Molavi, Reza ; Mirabbasi, Shahriar ; Hashemi, Majid
Author_Institution :
Dept. of Electr. & Comput. Eng., British Columbia Univ., Vancouver, BC, Canada
Abstract :
A methodology for designing wideband CMOS LNAs is proposed. This is an extension to the existing narrowband power-constrained simultaneous noise-input matching (PCSNIM) LNA design technique. To demonstrate the application of the proposed method, two wideband single-ended cascode LNAs are designed in a 0.18 μm CMOS technology to operate in the frequency bands of 1.5-2.5 GHz and 3.2-4.8 GHz, respectively. Based on simulation results, these LNAs achieve: maximum forward gain of 15.4 dB (17.9 dB) with 3 dB bandwidth of 1.6 GHz (2.7 GHz); maximum in-band noise figure of 0.9 dB (1.6 dB); worst case 1dB compression point of -13 dBm (-15 dBm); IIP3 of better than -2.5 dBm (-4.5 dBm) over the entire bandwidth. The LNAs draw 7.5 mA (8.8 mA) from a 1.5 V supply.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; integrated circuit design; microwave amplifiers; microwave integrated circuits; wideband amplifiers; 0.18 micron; 0.9 dB; 1.5 V; 1.5 to 2.5 GHz; 1.6 GHz; 1.6 dB; 15.4 dB; 17.9 dB; 2.7 GHz; 3.2 to 4.8 GHz; 7.5 mA; 8.8 mA; CMOS technology; IIP3; compression point; forward gain; in-band noise figure; power-constrained simultaneous noise-input matching design technique; single-ended cascode LNA; wideband CMOS LNA design; Bandwidth; CMOS technology; Design methodology; Impedance matching; Narrowband; Noise cancellation; Noise figure; Power engineering and energy; Semiconductor device modeling; Wideband;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465783
