Doppler radar module

Details Doppler radar module Doppler radar module

1996-09-18

1998-06-09

Wimer, Micheal C.

Communications: radio wave antennas

Antennas

Microstrip

343846, 333246, H01Q 138

Patent

active

057641897

ABSTRACT:
A Doppler radar module, having an operating frequency of about 2.45 GHz, is constructed in microstrip line technology and has a very small construction size. The Doppler radar module includes a planar antenna, a multilayer circuit board having a circuit for the transmission and reception of microwaves, and a housing made of metal. The planar antenna has a planar dipole whose radiating edges are shorter than their spacing from one another, and a substrate whose thickness is greater than 3 mm. This combination of the antenna and the multilayer circuit board on which the antenna is fastened, makes possible the small construction size with simultaneous excellent functional characteristics, such as high sensitivity with low transmission power and low emission of harmonics.

REFERENCES:
patent: 4260988 (1981-04-01), Yanagisawa et al.
patent: 4967201 (1990-10-01), Rich, III
patent: 5068669 (1991-11-01), Koert et al.
patent: 5153600 (1992-10-01), Metzler et al.
patent: 5270722 (1993-12-01), Delestre
patent: 5453754 (1995-09-01), Fray
patent: 5455594 (1995-10-01), Blasing et al.
patent: 5497163 (1996-03-01), Lohninger et al.

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