Open AccessW‐band dual‐channel receiver with active power divider and temperature‐compensated circuit
Author(s) -
Lee S.,
Lee S.,
Park H.,
Kim W.,
Kwon H.,
Jeong J.,
Kwon Y.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.3781
Subject(s) - gain compression , noise figure , amplifier , electrical engineering , channel (broadcasting) , power dividers and directional couplers , local oscillator , wilkinson power divider , materials science , frequency divider , physics , radio frequency , engineering , cmos
A W‐band dual‐channel receiver is presented for the frequency‐modulated continuous wave radars. In order to improve the isolation between two RF channels, a compact active power divider is implemented by a dual‐output local oscillator (LO) amplifier. The temperature‐compensated circuit also mitigates the gain variation of the receiver according to the ambient temperature. The fabricated receiver integrated circuit shows a conversion gain of 16 dB, a noise figure of 6.4 dB, and an input 1 dB compression point of −13.4 dBm at RF frequency of 76.5 GHz and LO input power of −1 dBm. The channel‐to‐channel isolation is >33 dB and the conversion gain variation is as low as −0.031 dB/°C between −40 and 120°C. This is the first temperature‐compensated multi‐channel receiver demonstration in W‐band.