Title :
A 10~18GHz Wide-band Transformer feedback LNA
Author :
Chiang, Pei-Yuan ; Jou, Christina F. ; Wu, Hui-I ; Huang, Zhe-Yang
Author_Institution :
Nat. Chiao Tung Univ., Hsinchu
Abstract :
A wide-band (10~18 GHz) low noise ampIifier (LNA) is presented . With transformer feedback in the traditional cascode amplifier, good input matching is achieved from 10 GHz to 18 GHz. The noise figure is below 3.5 dB over 10-18 GHz. There is no input-matching elements in the input gate of the cascode amplifier, so that the LNA can achieve lower NF. The LNA is designed based on CMOS TSMC 0.18 mum mixed signal/RF process. With 1.8 V supply voltage and three stage amplifiers to achieve wider gain bandwidth, the LNA can achieve input-matching of -12 dB over the bandwidth; minimum NF 2.4 dB; gain (S21) of 17 dB and 1 dB gain compression (P1 dB) at -22.6 dB. The power consumption is 37.6 mW (exclude buffer).
Keywords :
CMOS integrated circuits; MMIC amplifiers; feedback amplifiers; low noise amplifiers; mixed analogue-digital integrated circuits; transformers; wideband amplifiers; CMOS TSMC; cascode amplifier; frequency 10 GHz to 18 GHz; gain 17 dB; input matching; low noise ampIifier; mixed signal/RF process; noise figure; noise figure 2.4 dB; power 37.6 mW; size 0.18 mum; voltage 1.8 V; wide band transformer feedback LNA; Bandwidth; Broadband amplifiers; Feedback; Gain; Impedance matching; Noise figure; Noise measurement; Radiofrequency amplifiers; Signal design; Wideband; low noise amplifier(LNA); transformer feedback; wide-band;
Conference_Titel :
Radio-Frequency Integration Technology, 2007. RFIT 007. IEEE International Workshop on
Conference_Location :
Rasa Sentosa Resort
Print_ISBN :
978-1-4244-1307-2
Electronic_ISBN :
978-1-4244-1308-9
DOI :
10.1109/RFIT.2007.4443921
