Title :
A dual-varactor analog phase shifter operating at 6 to 18 GHz
Author :
Krafcsik, David M. ; Imhoff, Scott A. ; Dawson, Dale E. ; Conti, Anthony L.
Author_Institution :
Westinghouse Electr. Corp., Baltimore, MD, USA
Abstract :
An MMIC analog reflection phase shifter which achieves 120 degrees of phase shift from 6 to 18 GHz is described. The phase shifter uses a dual-varactor reflection circuit which allows varactors with a 3:1 capacitance ratio to achieve the performance that normally requires 10:1 diodes. The varactor diode is a surface-oriented structure with a hyperabrupt doping profile selectively ion implanted to a depth of 0.70 mu m.<>
Keywords :
MMIC; phase shifters; varactors; 6 to 18 GHz; MMIC; SHF; analog phase shifter; dual-varactor reflection circuit; hyperabrupt doping profile; selective ion implantation; surface-oriented structure; Capacitance; Coupling circuits; Diodes; Phase shifters; RLC circuits; Radio frequency; Reflection; Resonance; Tuned circuits; Varactors;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
