A Full-Duplex Bidirectional Amplifier With Low DC Power Consumption Using Tunnel Diodes

A low-power, switchless, full-duplex bidirectional amplifier operating in the 915 MHz (industrial, scientific and medical band) is proposed. It is composed of two identical reflection amplifiers and one 90°, −3 dB branch line coupler (BLC). The reflection amplifiers are designed using low dc power consumption tunnel diodes and provide a measured reflection gain of 13 dB with consumed power of only <inline-formula> <tex-math notation="LaTeX">$178~\mu \text{W}$ </tex-math></inline-formula> for −30 dBm of incident signal power. These reflection amplifiers are integrated with a miniaturized BLC to form a bidirectional amplifier that provides 9 dB of measured transmission gain and 22 dB of measured return loss.

[1]  Hong-Yeh Chang,et al.  A Broadband Bidirectional Amplifier Using $G_{m}$-Bandwidth Extension Technique , 2016, IEEE Microwave and Wireless Components Letters.

[2]  Cristina Turcu.  Development and Implementation of RFID Technology , 2009 .

[3]  Shahriar Emami.  Parallel battery configuration for coin cell operated wireless sensor networks , 2013, 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).

[4]  Songcheol Hong,et al.  An X-Band Switchless Bidirectional GaN MMIC Amplifier for Phased Array Systems , 2014, IEEE Microwave and Wireless Components Letters.

[5]  Shyh-Jong Chung,et al.  A novel bi-directional amplifier with applications in active Van Atta retrodirective arrays , 2003 .

[6]  Thomas F. Bechteler,et al.  Switchless bidirectional amplifier for wireless communication systems , 2007 .

[7]  Besma Smida,et al.  Full-duplex wireless communication based on backscatter amplifier , 2014, 2014 IEEE International Conference on Communications Workshops (ICC).

[8]  Francesco Amato,et al.  A 45 μW bias power, 34 dB gain reflection amplifier exploiting the tunneling effect for RFID applications , 2015, 2015 IEEE International Conference on RFID (RFID).

[9]  Jeong-Geun Kim,et al.  A Switchless CMOS Bi-Directional Distributed Gain Amplifier With Multi-Octave Bandwidth , 2013, IEEE Microwave and Wireless Components Letters.

[10]  J.W. Archer,et al.  Bi-directional amplifiers for half-duplex transceivers , 1999, GaAs IC Symposium. IEEE Gallium Arsenide Integrated Circuit Symposium. 21st Annual. Technical Digest 1999 (Cat. No.99CH36369).

[11]  R. Lai,et al.  Compact ka-band bi-directional amplifier for low-cost electronic scanning array antenna , 2004, IEEE Journal of Solid-State Circuits.

[12]  Wai-Kei Lo,et al.  Self-phase equalised bidirectional distributed amplifier , 2007 .