Four-pole versus five-pole filter comparison

Author

Hayes, Peter S. ; Surette, Robert A.

Volume

36

Issue

1

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

94

Lastpage

98

Abstract

Test results obtained on the prototype five-pole cavity filter as constructed to meet the requirements of the John Hancock Building (Chicago, Illinois) combiner project are presented. A comparison is made of the performance of that prototype filter with the results obtained using the standard four-pole filter. The five-pole filter was designed to use approximately 16-in square aluminum cavities with copper inner conductors and, thus, differs from the standard four-pole filters (which are approximately 24-in on a side) in both size and number of cavities. The size difference will affect some of the parameters that are being compared, as a 16-in four-pole filter is not available. Among the parameters that are compared are match, insertion loss, and group delay

Keywords

cavity resonators; passive filters; radiofrequency filters; 16 in; 24 in; Al; Chicago; Cu; Illinois; John Hancock Building; five-pole cavity filter; four-pole filter; group delay; insertion loss; matching; passive filters; test results; Aluminum; Costs; Delay effects; Design engineering; Filters; Frequency; Impedance; Insertion loss; Propagation losses; Prototypes;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.52369

Filename

52369