Microwave radiating applicator with reduced sensitivity to...

Details Microwave radiating applicator with reduced sensitivity to... Microwave radiating applicator with reduced sensitivity to...

2008-06-17

2008-06-17

Leung, Philip H (Department: 3742)

Electric heating

Microwave heating

Waveguide applicator

C219S695000, C219S746000, C219S750000, C333S034000

Reexamination Certificate

active

07388179

ABSTRACT:
A microwave energy applicator radiating uniformly all around the applicator that maintains high efficiency Voltage Standing Wave Ratio (V.S.W.R.) for surrounding media of dielectric constants varying from about 1 to about 80. In a particular embodiment, the high efficiency V.S.W.R. is less than about 1.3:1. The applicator can include a circular polarizer connectable to a dielectric waveguide radiator. The radiator can be substantially solid and include a substantially circular outer cross-section that tapers to an end. In one embodiment, the radiator includes a conical void formed in a dielectric entry section.

REFERENCES:
patent: 2480682 (1949-08-01), Stiefel
patent: 2811624 (1957-10-01), Haagensen
patent: 4684776 (1987-08-01), Heard
patent: 4853507 (1989-08-01), Samardzija
patent: 6034362 (2000-03-01), Alton
patent: 6274858 (2001-08-01), Alton
Rueggeberg, W., “A Multislotted Waveguide Antenna for High-Powered Microwave Heating Systems”,IEEE Transactions on Industry Applications, vol. 1A-16, No. 6, pp. 809-813 Nov./Dec. 1980.

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