Title :
A tunable low-noise amplifier for digital TV applications
Author :
Takamatsu, Y. ; Fujimoto, R. ; Yasuda, T. ; Sekine, T. ; Hirakawa, T. ; Ishii, M. ; Hayashi, M. ; Itoh, N.
Author_Institution :
Semicond. Co., Toshiba Corp, Kawasaki, Japan
Abstract :
This paper presents a tunable low-noise amplifier (LNA) for digital TV (ISDB-T) applications. To receive all channels from 470 MHz to 770 MHz and to relax distortion characteristics of following circuit blocks such as an RF variable-gain amplifier and a mixer, tunable techniques for LNAs are required. A novel output matching configuration for tunable LNAs is proposed, and an input matching technique is also described. A tunable LNA using the proposed tunable techniques is fabricated using 90 nm CMOS technology. Measured results show the proposed techniques are suitable for the LNAs for the ISDB-T.
Keywords :
CMOS integrated circuits; UHF amplifiers; digital television; low noise amplifiers; mixers (circuits); CMOS technology; ISDB-T applications; RF variable-gain amplifier; circuit blocks; digital TV applications; frequency 470 MHz to 770 MHz; input matching; mixer; relax distortion; size 90 nm; tunable low-noise amplifier; CMOS technology; Communication standards; Data communication; Digital TV; Digital multimedia broadcasting; Impedance matching; Low-noise amplifiers; Multiplexing; Radio frequency; Tunable circuits and devices;
Conference_Titel :
Solid-State Circuits Conference, 2009. A-SSCC 2009. IEEE Asian
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4433-5
Electronic_ISBN :
978-1-4244-4434-2
DOI :
10.1109/ASSCC.2009.5357258
