An Eigenadmittance Condition Applicable to Symmetrical Four-Port Circulators and Hybrids

Recently, an expression for the equivalent admittance of symmetrical three-port circulators has been derived on the basis of symmetry considerations. In this paper, the same technique is extended to the symmetrical four-port circulator. It is shown that a simple relationship must be satisfied by the...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1978-04, Vol.26 (4), p.275-279
Main Author: Riblet, G.P.
Format: Article
Language:English
Subjects:
Admittance
Arm
Circulators
Computer aided software engineering
Equations
Gyrators
Impedance matching
Tuners
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recently, an expression for the equivalent admittance of symmetrical three-port circulators has been derived on the basis of symmetry considerations. In this paper, the same technique is extended to the symmetrical four-port circulator. It is shown that a simple relationship must be satisfied by the eigenadmittances jY/sub 0/, jY/sub -1/, jY/sub 1/, and jY/sub 2/ if perfect circulation is to be obtainable by matching alone. This relationship also applies to recriprocal four-port devices with 2-fold symmetry about two perpendicular axes which are required to be 90/spl deg/ hybrids upon matching, provided that the eigenadmittances jY/sub 1/, jY/sub 2/, jY/sub 3/, and jY/sub 4/ are used. An interesting application of this relation to the construction of a compact stripline hybrid is given.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.1978.1129364