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http://dx.doi.org/10.5573/ieie.2014.51.12.090

A VHF/UHF-Band Variable Gain Low Noise Amplifier for Mobile TV Tuners  

Nam, Ilku (Dept. of Electrical Engineering, Pusan National University)
Lee, Ockgoo (Dept. of Electrical Engineering, Pusan National University)
Kwon, Kuduck (Dept. of Electronics Engineering, Kangwon National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.12, 2014 , pp. 90-95 More about this Journal
Abstract
This paper presents a VHF/UHF-band variable gain low noise amplifier for multi-standard mobile TV tuners. A proposed VHF-band variable gain amplifier is composed of a resistive shunt-feedback low noise amplifier to remove external matching components, a single-to-differential amplifier with input PMOS transcoductors to improve low frequency noise performance, a variable shunt-feedback resistor and an attenuator to control variable gain range. A proposed UHF-band variable gain amplifier consists of a narrowband low noise amplifier with capacitive tuning to improve noise performance and interference rejection performance, a single-to-differential with gm gain control and an attenuator to adjust gain control range. The proposed VHF-band and UHF-band variable gain amplifier were designed in a $0.18{\mu}m$ RF CMOS technology and draws 22 mA and 17 mA from a 1.8 V supply voltage, respectively. The designed VHF-band and UHF-band variable gain amplifier show a voltage gain of 27 dB and 27 dB, a noise figure of 1.6-1.7 dB and 1.3-1.7 dB, OIP3 of 13.5 dBm and 16 dBm, respectively.
Keywords
LNA; Mobile; RF; Tuner; TV; Variable gain;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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