Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1994-08-04
1996-03-05
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343846, 343909, H01Q 1910
Patent
active
054971683
ABSTRACT:
A dielectric material having a dielectric constant which varies inversely with frequency, and preferably with the second power of frequency, fills the space between a radiator and a reflecting groundplane. The back-directed wave is reflected back to the radiator in phase with the directly radiated wave over a wide frequency band, increasing the radiator efficiency.
REFERENCES:
patent: 2840820 (1958-06-01), Southworth
patent: 4288337 (1981-09-01), Ota et al.
P. Callaghan, et al., "Influence of supporting dielectric layers on the transmission properties of frequency selective surfaces", IEEE Proceedings-H, vol. 138, No. 5, Oct. 1991, pp. 448-454.
Glaser Jerome I.
Hunter Shane H.
Smalanskas Joseph P.
Thomas Michael D.
Tran Allen M.
Alkov Leonard A.
Denson-Low W. K.
Hughes Aircraft Company
Wimer Michael C.
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