A Full-duplex Bidirectional Amplifier with Low DCPower Consumption Using Tunnel Diodes
journal contributionposted on 22.05.2019 by Seiran Khaledian, Farhad Farzami, Danilo Erricolo, Besma Smida
Any type of content formally published in an academic journal, usually following a peer-review process.
A low-power, switchless, full-duplex bidirectionalamplifier operating in the 915 MHz (ISM band) is proposed.It is composed of two identical reflection amplifiers and one90◦,−3dB Branch Line Coupler (BLC). The reflection ampli-fiers are designed using low DC power consumption tunnel diodesand provide a measured reflection gain of 13 dB with consumedpower of only 178μW for -30 dBm of incident signal power. Thesereflection amplifiers are integrated with a miniaturized BLC toform a bidirectional amplifier that provides 9 dB of measuredtransmission gain and 22 dB of measured return loss.