Multilayered, planar antenna with annular feed slot, passive res

Communications: radio wave antennas – Antennas – Slot type

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343700MS, H01Q 138

Patent

active

055394205

ABSTRACT:
A plane antenna suitable for space applications in particular comprises a passive resonator coupled to a feedline by a looped slot.

REFERENCES:
patent: 3665480 (1972-05-01), Fassett
patent: 4208660 (1980-06-01), McOwen
patent: 4443802 (1984-04-01), Mayes
patent: 4710775 (1987-12-01), Coe
patent: 4719470 (1988-01-01), Munson
patent: 4792810 (1988-12-01), Fukuzawa et al.
patent: 4958165 (1990-09-01), Axford et al.
Patent Abstracts of Japan, vol. 13, No. 232 (E-765)(3580) May 29, 1989; & JP-A-13 9102 (Matsushita Electric Works) Feb. 9, 1989.
L'Onde Electrique vol. 69, No. 2, Mars/Avril, 1989, pp. 15-21, Paris, France, by Albert Papiernik "Les activites du Groupement de Recherche microantennes du CNRS(.sup.1)".
Nurie et al, "Crossover Performance of Annular-Ring Microstrip Antenna With Novel Mode Suppression", Electronics Letters, vol. 25, No. 10 11 May 1989 pp. 656-657.

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