Constant beamwidth spiral antenna

Details Constant beamwidth spiral antenna Constant beamwidth spiral antenna

1985-04-01

1988-02-16

Yasich, Daniel M.

Communications: radio wave antennas

Antennas

Spiral or helical type

343909, H01Q 136

Patent

active

047258489

ABSTRACT:
A planar two-arm Archimedean spiral antenna has a design of semi-lumped element circuit incorporated in each arm to form serial-inductance, shunt-capacitance, ladder-type Tchebyscheff low pass filters. Energy travelling outward from the center is mostly radiated when a ring of a certain size is reached and whatever remaining unradiated energy is attenuated without giving rise to undesired higher order radiation.

REFERENCES:
patent: 3562756 (1971-02-01), Kuo et al.
patent: 3681772 (1972-08-01), Ingerson
patent: 3956752 (1976-05-01), Phelan et al.
patent: 4243993 (1981-01-01), Lamberty et al.
patent: 4525720 (1985-06-01), Corzine et al.
patent: 4559539 (1985-12-01), Markowitz et al.
patent: 4605934 (1986-08-01), Andrews
patent: 4608572 (1986-08-01), Blakney et al.
"Microwave Filters, Impedance-Matching Networks, & Coupling Structures", Matthaei et al., 1964, pp. 365-374.

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