Title :
Electronically tunable lumped element 90° hybrid coupler
Author :
Fardin, E.A. ; Holland, A.S. ; Ghorbani, K.
Author_Institution :
Sch. of Electr. & Comput. Eng., RMIT Univ., Melbourne, Vic., Australia
fDate :
3/16/2006 12:00:00 AM
Abstract :
A method for tuning the centre frequency of a 3 dB hybrid coupler using varactor diodes is presented. The circuit is suitable for reconfigurable or multifunction transceivers that switch between several narrow frequency bands. A prototype covering the PCS, DCS and IMT2000 cellular bands (1710-2170 MHz) is demonstrated.
Keywords :
radiofrequency integrated circuits; transceivers; varactors; waveguide couplers; 1710 to 2170 MHz; DCS; IMT2000 cellular bands; PCS; hybrid coupler; lumped element; multifunction transceivers; reconfigurable transceivers; varactor diodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20060129
