Matching section for multi-arm spiral antenna

Details Matching section for multi-arm spiral antenna Matching section for multi-arm spiral antenna

1981-10-30

1983-08-02

Moore, David K.

Communications: radio wave antennas

Antennas

Spiral or helical type

333 34, H01Q 326

Patent

active

043969216

ABSTRACT:
A matching section for a spiral antenna used in a monopulse receiver is shown to receive a plurality of coaxial cables at equally spaced points along the circumference of a first circle and to guide the center conductors of such cables to arms of a multi-arm spiral antenna at equally spaced points along the circumference of a second circle, the characteristic impedance along the length of the matching section changing smoothly for the sum and difference modes and impedance matching closely to the antenna sum and difference modes.

REFERENCES:
patent: 2934719 (1960-04-01), Kyhl
patent: 3518691 (1970-06-01), Hallendorff
patent: 3555554 (1971-01-01), Shu Kuo
patent: 4143380 (1979-03-01), Kyle

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