Patent ID: 6154183
Filing Date: 2000-11-28
Classification: H01P,H01Q

Abstract:
Waveguide antenna comprising:a waveguide section having an aperture disposed at an aperture side thereof, and a short-circuit wall with an eccentrically located opening therein;a coaxial feed; anda transition from the coaxial feed to the waveguide section; whereinthe waveguide section of waveguide antenna has a lengthL=L.sub.o +1, wherein L.sub.o =1/4.lambda.; 0.ltoreq.1.ltoreq..lambda.; and .lambda.=operating wavelength;a signal fed from the coaxial feed is coupled through the eccentrically located opening in the short-circuit wall, with the aid of a first capacitatively acting coaxial probe, which probe comprises a pin and a sleeve partially surrounding the pin without contact, and is connected by a terminal with the central conductor of the coaxial feed; anda second probe with an external shape corresponding to an external shape of the first probe is conductively fastened to the short-circuit wall symmetrically relative to a main axis of the waveguide section, an end of the second probe on the aperture side being connected with the end of the first probe on the aperture side by means of a first shorting strap, said first and second probes and said first shorting strap forming a first coupling device.