| US 7,573,420 B2 | ||
| RF front-end for a radar system | ||
| Hans Peter Forstner, Steinhoering (Germany); and Rudolf Lachner, Ingolstadt (Germany) | ||
| Assigned to Infineon Technologies AG, Neubiberg (Germany) | ||
| Filed on May 14, 2007, as Appl. No. 11/803,343. | ||
| Prior Publication US 2008/0287085 A1, Nov. 20, 2008 | ||
| Int. Cl. G01S 13/00 (2006.01) | ||
| U.S. Cl. 342—175 [342/70; 342/71; 342/72] | 14 Claims |
| 1. A mixer arrangement comprising:
an oscillator terminal for receiving an oscillator signal,
an RF terminal for connecting an antenna,
a base-band terminal for providing a base-band signal,
a mixer having a first input operably coupled to the oscillator terminal, a second input, and an output operably coupled to
the base-band terminal,
a directional coupler operably coupled to oscillator terminal and the RF terminal for coupling the oscillator signal to the
antenna and for coupling a signal received from the antenna to the second input of the mixer,
a disconnecting device configured to interrupt the signal flow from the oscillator terminal to the RF terminal.
|