Title :
Suppression of Digital Noise Coupling on LNA in 0.13-μm RFCMOS Technology by Global Guard Rings
Author :
Lee, Seungyong ; Kim, Kihan ; Oh, Tae Hyun ; Song, Ickhyun ; Shin, Hyungcheol ; Kim, Moonil ; Rieh, Jae-Sung
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul
Abstract :
Digital noise coupling on the noise-sensitive RF and analog circuits through substrate continues to grow as a critical issue as the on-chip integration of digital and RF/analog becomes increasingly popular with the advent of SoC approach. In this work, the effect of digital noise coupling on a 5.8-GHz LNA in 0.13 mum RFCMOS technology was investigated in terms of the noise figure. The noise figure degradation was compared for various magnitudes and clock frequencies of the digital signal applied. Further, the suppression of the noise coupling on the LNA by the global guard ring was demonstrated and compared for various guard ring bias schemes.
Keywords :
CMOS integrated circuits; interference suppression; low noise amplifiers; microwave amplifiers; mixed analogue-digital integrated circuits; radiofrequency integrated circuits; system-on-chip; LNA; RF circuits; RFCMOS technology; SoC; digital noise coupling suppression; frequency 5.8 GHz; global guard rings; on-chip integration; size 0.13 mum; Circuit noise; Coupling circuits; Degradation; Integrated circuit noise; Noise figure; Noise level; Noise measurement; Radio frequency; Semiconductor device noise; Substrates;
Conference_Titel :
Silicon Monolithic Integrated Circuits in RF Systems, 2008. SiRF 2008. IEEE Topical Meeting on
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1855-8
Electronic_ISBN :
978-1-4244-1856-5
DOI :
10.1109/SMIC.2008.58
