Communications: radio wave antennas – Antennas – Microstrip
Patent
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.
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Phan Tho
Siemens Aktiengesellschaft
Wimer Micheal C.
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