Title :
Noise-shaped post-mixer blocker filter for integrated receivers
Author :
Tekin, Ahmet ; Elwan, Hassan ; Pedrotti, Kenneth ; Dogan, Numan S.
Author_Institution :
Baskin Sch. of Eng., Univ. of California Santa Cruz, Santa Cruz, CA, USA
Abstract :
In this paper, analysis and design of a frequency dependent negative resistance (FDNR) based noise-shaping elliptic blocker filtering technique is presented. Due to its noise shaping characteristics, the circuit can provide a third-order low-pass elliptic response with an input referred noise density of 7.2nV/sqrtHz. The proposed circuit relaxes the noise-linearity trade-off a receiver chain by providing blocker rejection with a minimal area and noise cost. The design occupies a die area of 350 ¿m by 700 ¿m in a 65-nm CMOS process covering a frequency band of 700-KHz to 5.2 MHz as a universal direct-conversion base-band filtering solution.
Keywords :
filters; mixers (circuits); receivers; CMOS process; direct-conversion base-band filtering; elliptic blocker filtering; frequency 700 kHz to 5.2 MHz; frequency dependent negative resistance; noise density; noise-shaping filtering; post-mixer blocker filter; receivers; size 350 mum; size 65 nm; size 700 mum; third-order low-pass elliptic response; Circuit noise; Circuit topology; Design engineering; Filtering; Filters; Frequency dependence; Lakes; Noise shaping; Resistors; Transfer functions; Frequency Dependent Negative Resistance (FDNR); Low-Noise Receivers; Noise-Shaping Filtering;
Conference_Titel :
Microelectronics, 2008. ICM 2008. International Conference on
Conference_Location :
Sharjah
Print_ISBN :
978-1-4244-2369-9
Electronic_ISBN :
978-1-4244-2370-5
DOI :
10.1109/ICM.2008.5393771
