H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/30, 343/67
H01Q 13/02 (2006.01) H01Q 1/24 (2006.01)
Patent
CA 1187602
ABSTRACT OF THE DISCLOSURE HORN ANTENNA AND MIXER CONSTRUCTION FOR MICROWAVE RADAR DETECTORS A horn antenna construction, particularly for use in microwave radar detector circuits, comprises a molded horn element that is open at its bottom side, with a ridge molded into its flared top surface, and being electrically conductive at least at microwave frequencies such as in the X-band and K-band. The open bottom of the horn element mates to a conductive upper surface on a mounting board, and the horn is drawn down onto the mounting board so that its upper surface forms the bottom of the horn. Thus, the ridge is brought into physical and electrical contact with a feed strip formed in a microstrip board on the mounting board, that has a mixing diode or diodes associated therewith. by this construction, there is a positive and dimensionally stable association of the throat of the horn and the ridge to the feed strip and the mixing diode(s), without the necessity of any solder, inserted connectors or mounting pins, or the provision of any tuning posts or screws. Moreover, very efficient energy conversion, and thereby increased sensitivity, is assured because the horn, the feed strip and certain matching and terminating stubs on the microstrip board assure good isolation between the mixing ports and low energy loss at the mixer.
444841
Beltronics Usa Inc.
Marks & Clerk
LandOfFree
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