1/2 Wavelength side coupled filter

Details 1/2 Wavelength side coupled filter 1/2 Wavelength side coupled filter

1988-07-28

1989-07-25

Nussbaum, Marvin L.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333204, 333246, H01P 1203, H01P 1213

Patent

active

048517976

ABSTRACT:
In a 1/2 wavelength side coupling filter, a plurality of resonance lines (4) are arranged on a board (20) in parallel to each other in a staggered manner so that respective ends thereof have step portions. An input coupling line (3) is arranged in parallel to the plurality of resonance lines, with an input end (5) formed opposed to an intermediate position of the adjacent resonance line and one end portion (6) formed aligned with one end portion of the adjacent resonance line. An adjusting line (7) is formed extending from one end portion (6) on the input coupling line, and the filtering characteristics adjusted by the adjusting line.

REFERENCES:
patent: 4168479 (1979-09-01), Rubin
patent: 4757286 (1988-07-01), Konishi et al.
IEEE Transactions on Microwave Theory and Techniques, Oct. 1972, pp. 696-699, MTT-20.
IEEE Transactions on Microwave Theory and Techniques, MIT-13, (1965.01), pp. 91-95.

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