Title :
Broadband Phase Shifters using RC-Allpass-Networks and Active Balun Circuits
Author :
Menzel, E. ; Schiek, B. ; Gronefeld, A.
Author_Institution :
Ruhr-Universitÿt Bochum, Institut fÿr Hoch- und Höchstfrequenztechnik, Universitÿtsstr. 150, D-4630 Bochum 1, Fed. Rep. of Germany
Abstract :
Synthesis procedures for symmetrically and unsymmetrically loaded RC-allpass bridge circuits are presented. Phase shifters with 900 ± 200 from 1 MHz to 4 GHz are obtained by switching between two RC-allpass networks of second order and a section of line in one of the RC-allpasses. With active balun circuits the overall transmission loss is close to 0 dB.
Keywords :
Admittance; Bridge circuits; Circuit synthesis; Frequency; Impedance matching; Network synthesis; Phase shifters; Poles and zeros; Propagation losses; Scattering parameters;
Conference_Titel :
Microwave Conference, 1988. 18th European
Conference_Location :
Stockholm, Sweden
DOI :
10.1109/EUMA.1988.333846
