Title :
Enhanced coupled, even mode terminated baluns and mixers constructed therefrom
Author_Institution :
Avantek Inc., Folsom, CA, USA
Abstract :
A novel mixer circuit technology, based on what the author calls the planar balun, that is appropriate for microstrip or suspended-substrate mixer construction is introduced. The multilayer planar balun is an even-mode-terminated structure which provides coupling in which odd-mode impedance and velocity can be controlled without greatly affecting even-mode characteristics. The planar balun and mixer circuitry are described, and comparisons are made with other baluns. Wideband mixer performance and balun voltage distribution are shown. A planar balun mixer fabricated in a 0.25-in/sup 2/ surface mount package is demonstrated.<>
Keywords :
microwave integrated circuits; mixers (circuits); strip line components; MIC; even mode terminated baluns; even-mode characteristics; microstrip; mixer circuit technology; multilayer planar balun; odd-mode impedance; surface mount package; suspended-substrate; voltage distribution; Appropriate technology; Coupling circuits; Impedance matching; Microstrip; Nonhomogeneous media; Packaging; Surface impedance; Velocity control; Voltage; Wideband;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99627
