Patent ID: 6166699
Filing Date: 2000-12-26
Classification: H01P

Abstract:
An antenna source for transmitting and receiving microwaves, the antenna source including a transducer (24) for separating transmission signals from reception signals, the transmission signals having frequencies different from frequencies of the reception signals, wherein the transducer (24) comprises a square-section waveguide (26), one end of the square-section waveguide being connected to a radiating element, and another end of the square-section waveguide being connected to a signal transmission path, the transmission path including a circular-section waveguide (32) that terminates inside the square-section waveguide (26);wherein the transmission path is connected to the waveguide of the transducer via filter means passing signals at transmission frequencies and reflecting signals at reception frequencies; andwherein the filter means comprise a ring situated inside the waveguide of the transducer.