A matched lumped element five-port which is based on the comparator circuit

Author

Riblet, Gordon P.

Author_Institution

Microwave Dev. Labs. Inc., Natick, MA, USA

Volume

35

Issue

10

fYear

1988

fDate

10/1/1988 12:00:00 AM

Firstpage

1307

Lastpage

1311

Abstract

Recently, a very broadband matched lumped element symmetrical five-port was described. The synthesis of this circuit required 23 ideal transformers. An alternate lumped element broadband matched five-port is described that requires only four frequency invariant 180° hybrids for its synthesis. The linear S matrix element-S matrix eigenvalue relations for this nonsymmetrical five-port are derived. These are used to design a broadband lumped element five-port which is matched at each port. A practical realization using four flatpack 180° hybrids is described and the experimental performance given

Keywords

S-matrix theory; comparators (circuits); impedance matching; linear network synthesis; lumped parameter networks; multiport networks; passive networks; broadband; comparator circuit; flatpack 180° hybrids; frequency invariant 180° hybrids; linear S matrix element-S matrix eigenvalue relations; lumped element five-port; matched multiport network; nonsymmetrical five-port; passive type; Circuit synthesis; Eigenvalues and eigenfunctions; Frequency dependence; Frequency synthesizers; Impedance; Network synthesis; Power dividers; Symmetric matrices; Termination of employment; Transformers;

fLanguage

English

Journal_Title

Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0098-4094

Type

jour

DOI

10.1109/31.7604

Filename

7604