Frequency mixer for a doppler radar module

Details Frequency mixer for a doppler radar module Frequency mixer for a doppler radar module

1996-12-18

1998-06-02

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455330, 342104, H04B 126

Patent

active

057616167

ABSTRACT:
A frequency mixer for a Doppler radar module with directional recognition, can be operated with a single transmitting and receiving antenna. It is thereby possible to create a Doppler radar module with low space requirements even for transmitting and receiving frequencies below 5 GHz. In the frequency mixer, a first microstrip line is coupled to a first terminal of a first diode and a second microstrip line is coupled to a first terminal of a second diode. The two microstrip lines are connected to each other through a capacitor. An antenna is coupled to the first microstrip line and an oscillator is coupled to the second microstrip line. Second terminals of each of the diodes are connected to a fixed potential in an electrically conductive manner. A phase comparator is coupled to the two microstrip lines.

REFERENCES:
patent: 5262783 (1993-11-01), Philpott et al.
patent: 5497163 (1996-03-01), Lohninger et al.
patent: 5596325 (1997-01-01), Maas

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