Title :
A bi-directional quasi-optical lens amplifier
Author :
S. Hollung;A.E. Cox;Z.B. Popovic
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
A 24-element bi-directional quasi-optical lens amplifier array is presented. The lens amplifier array is designed for X-band, and operates in transmission mode. Single-pole double-throw (SPDT) switches are used to switch between transmit and receive amplifiers. The lens amplifier array demonstrates gains of 5.5 dB at 10.1 GHz in receive mode, and 2 dB at 10.2 GHz in transmit mode, with more than 15-dB ON/OFF isolation. Several applications for the lens amplifier array are demonstrated: a quasi-optical transceiver front-end, reduction of multipath fading, and a multiuser frequency reuse application.
Keywords :
"Bidirectional control","Lenses","Switches","Slot antennas","Feeds","Antenna measurements","Circuits","Microstrip antennas","Loss measurement","Impedance"
Journal_Title :
IEEE Transactions on Microwave Theory and Techniques
