Title :
A 5-GHz wireless LAN transmitter with integrated tunable high-Q RF filter
Author :
Wiser, Robert F. ; Zargari, Masoud ; Su, David ; Wooley, Bruce A.
Author_Institution :
Center for Integrated Syst., Stanford Univ., Stanford, CA
Abstract :
A tunable high-Q RF filter suitable for wireless transmitters has been implemented in standard CMOS technology. Two stagger-tuned Q-enhanced resonators form a filter that can be tuned across frequency and bandwidth. A 5.145-GHz filter with 200-MHz bandwidth and 0.8-dB of ripple is demonstrated in an 802.11a sliding-IF transmitter. The transmitter provides spectral mask and EVM-compliant output power of -8.26 dBm for a 54-Mb/s OFDM signal. At lower output power, an EVM of -32.3 dB is achieved.
Keywords :
CMOS integrated circuits; OFDM modulation; radio transmitters; radiofrequency filters; resonator filters; wireless LAN; 802.11a sliding-IF transmitter; CMOS technology; EVM; OFDM; bandwidth 200 MHz; frequency 5.145 GHz; integrated tunable high-Q RF filter; stagger-tuned Q-enhanced resonators; wireless LAN transmitter; Bandwidth; CMOS technology; Power generation; Power harmonic filters; Radio frequency; Resonator filters; Signal to noise ratio; Transmitters; Tunable circuits and devices; Wireless LAN;
Conference_Titel :
Custom Integrated Circuits Conference, 2008. CICC 2008. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-2018-6
Electronic_ISBN :
978-1-4244-2019-3
DOI :
10.1109/CICC.2008.4672159
