Title :
A 1.2 GHz semi-digital reconfigurable FIR bandpass filter with passive power combiner
Author :
Flament, Axel ; Frappé, Antoine ; Kaiser, Andreas ; Stefanelli, Bruno ; Cathelin, Andreia ; Ezzeddine, Hilal
Author_Institution :
IEMN - ISEN, Lille
Abstract :
This paper presents a reconfigurable semi-digital RFFIR filter suitable for digital transmitters using 1-bit DeltaSigma signal generation. A transmission line based 5-channel power combiner allows both increase of output power and programmable filtering of the signal. A prototype has been built with 65 nm CMOS and Integrated Passive Devices (IPD) technologies. The system exhibits a 14 dB power gain for a peak power of 17 dBm at 1.2 GHz and an attenuation of out-of band noise of up to 15 dB. CMOS and IPD chip size are respectively 2.05 mm2 and 17.78 mm2.
Keywords :
CMOS integrated circuits; FIR filters; UHF filters; band-pass filters; delta-sigma modulation; power combiners; transmission lines; transmitters; CMOS technology; DeltaSigma signal generation; digital transmitters; frequency 1.2 GHz; integrated passive devices; passive power combiner; programmable filtering; semidigital reconfigurable FIR bandpass filter; size 65 nm; transmission line; word length 1 bit; Band pass filters; Digital filters; Filtering; Finite impulse response filter; Power combiners; Power filters; Power generation; Power transmission lines; Signal generators; Transmitters;
Conference_Titel :
Solid-State Circuits Conference, 2008. ESSCIRC 2008. 34th European
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-2361-3
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2008.4681881
