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Design of Interstage Coupling Apertures for Narrow-Band Tunable Coaxial Band-Pass Filters (Correspondence)

1962; IEEE Microwave Theory and Techniques Society; Volume: 10; Issue: 2 Linguagem: Inglês

10.1109/tmtt.1962.1125475

1557-9670

R.M. Kurzrok,

Microwave Engineering and Waveguides

The design technique to be described in this note is applicable to tunable coaxial baud-pass filters having narrow bandwidths (i.e., less than 10 percent). In the frequeucy range of 1500 Mc to about 10,000 Mc, coaxial band-pass filters usually employ coupled /spl lambda//4 resonant cavities. Unlike direct coupled waveguide band-pass filters which are often amenable to a complete paper design, these coaxial band-pass filters require empirical developmental methods to supplement the filter theory customarily employed. The purpose of this note is to present a technique for simplifying the empirical development.