DocumentCode :
262035
Title :
3.7 A fully integrated TV tuner front-end with 3.1dB NF, >+31dBm OIP3, >83dB HRR3/5 and >68dB HRR7
Author :
In-Young Lee ; Sang-Sung Lee ; Donggu Im ; Seungjin Kim ; Jeongki Choi ; Sang-Gug Lee ; Jinho Ko
Author_Institution :
KAIST, Daejeon, South Korea
fYear :
2014
fDate :
9-13 Feb. 2014
Firstpage :
70
Lastpage :
71
Abstract :
In TV tuner systems, the RF front-end design has been a challenging issue since it must simultaneously satisfy over 65dB of harmonic rejection (HR), and have high linearity for high-power input and low noise over wide bandwidth (48-to-870MHz). In terms of harmonic rejection, even though the state-of-the-art work reports over 60dB rejections on the 3rd- and 5th- order harmonics with a single mixer [1], higher-than-5th-order harmonic rejections are still required for the low-band channels in TV tuners and thereby RF filters are indispensable at the RF front-end. However, due to the difficulties of integrating RF filters satisfying low noise and high linearity over wide bandwidth, the previous works inevitably had to use external inductors [2-4]. Although a recent work successfully integrates an RF filter satisfying all the stringent specifications by current-domain signal flow from the LNA output to the baseband stage [5], the transconductance stage at the filter input is not linear enough to drive the high-power input and thus the input signal needs to be attenuated at the RF front-end, which eventually degrades system SNR.
Keywords :
low noise amplifiers; mixers (circuits); radiofrequency filters; television; tuning; 3rd-order harmonics; 5th-order harmonics; LNA; RF filters; RF front-end design; TV tuner systems; current-domain signal flow; external inductors; frequency 48 MHz to 870 MHz; harmonic rejection; mixer; noise figure 3.1 dB; transconductance stage; Bandwidth; Harmonic analysis; Noise measurement; Radio frequency; Signal-to-noise ratio; TV; Tuners;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014 IEEE International
Conference_Location :
San Francisco, CA
ISSN :
0193-6530
Print_ISBN :
978-1-4799-0918-6
Type :
conf
DOI :
10.1109/ISSCC.2014.6757342
Filename :
6757342
Link To Document :
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