Accession Number:

AD0255509

Title:

DESIGN CRITERIA FOR MICROWAVE FILTERS AND COUPLING STRUCTURES

Descriptive Note:

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CA ELECTROMAGNETICS LAB

Personal Author(s):

Report Date:

1961-01-01

Pagination or Media Count:

1.0

Abstract:

Research was concerned, both theoretically and experimentally, with new types of microwave filters and coupling structures, and with developing more precise methods of design for various previously known structures. Among the structures discussed are a wide-band, strip-line, Magic-T a ferrite-loaded nonreciprocal TEM-mode structure for wide-band gyrator and isolator applications and two types of forward-coupling hybrid junction, one in strip-line and one in trough guide. Design data are presented for broadside-coupled strip transmission lines, and for an interleaving, printed-circuit, parallelcoupled, strip-transmission-line construction. Design theory and experimental results are presented for a type of waveguide filter having unusually broad stop bands. A generalized description is given of Cohns method for design of direct-coupled, bnad-pass filters. A method is presented for the design of wide-band, bandpass filters from lumped-element, low-pass prototypes. A mathematical study was made of the design of diplexers. The effects of dissipation loss in filters are presented. The use is discussed of pumped, variable-capacitance diodes in up-converters to form filters whose pass-band frequency is controlled by a voltagetunable pump oscillator. Lumped-element, lowpass prototype data are given for impedancematching networks. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE