Title :
A 1.4V, 13.5mW, 10/100MHz 6th order elliptic filter/VGA with DC-offset correction in 90nm CMOS [WLAN applications]
Author :
Elmala, Mostafa ; Carlton, Brent ; Bishop, Ralph ; Soumyanath, Krishnamurthy
Author_Institution :
Intel Res. & Dev., Intel Corp., Hillsboro, OR, USA
Abstract :
This paper presents a complete base-band chain for WLAN applications in 1.4 V 90 nm CMOS. The chain consists of a 6th order elliptic Gm-C 10/100 MHz filter and five VGA stages. The design is DC-offset free and uses optimized transconductance for linearity and low-voltage operation. Moreover, the integrators in the filter are compensated for losses through a frequency transformation. The IIP3 is 2 dBm at 13.5 dB minimum gain, while dissipating 13.5 mW.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; VHF filters; circuit optimisation; elliptic filters; error compensation; integrating circuits; low-power electronics; wireless LAN; 1.4 V; 10 to 100 MHz; 13.5 dB; 13.5 mW; 90 nm; CMOS; DC-offset correction; DC-offset free circuit; Gm-C filters; HP3; WLAN baseband chain; circuit linearity; filter integrators; frequency transformation; high-order elliptic filter; linear transconductance optimization; loss compensation integrators; low-voltage operation; multiple VGA stages; Band pass filters; Capacitors; Frequency; Linearity; Low pass filters; Nonlinear filters; RLC circuits; Transconductance; Transfer functions; Wireless LAN;
Conference_Titel :
Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE
Print_ISBN :
0-7803-8983-2
DOI :
10.1109/RFIC.2005.1489627
