Short resonant ridge waveguide load under radiation slot

Details Short resonant ridge waveguide load under radiation slot Short resonant ridge waveguide load under radiation slot

2005-11-29

2005-11-29

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Slot type

C343S772000

Reexamination Certificate

active

06970139

ABSTRACT:
A short ridge waveguide load is described which absorbs and cancels non-radiated electromagnetic energy in continuous slot or discrete slotted antennas. The load achieves a small physical size by using a resonant structure which includes an absorbing ferrite front section positioned within the interior of the waveguide antenna below the slot and a back section of ferrite material also positioned in the interior of the waveguide antenna. This allows for energy to be radiated from the slot while absorbing and canceling the non-radiated energy using a relatively small size load. In a rectangular ridge waveguide configuration, the front section consists of a pair of posts having a trapezoidal, rectangular or triangular shape.

REFERENCES:
patent: 3530479 (1970-09-01), Waldron
patent: 3978485 (1976-08-01), Bonnaval
patent: 4124851 (1978-11-01), Aaron et al.

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