Circuit arrangement for frequency conversion and mobile...

Details Circuit arrangement for frequency conversion and mobile... Circuit arrangement for frequency conversion and mobile...

2007-07-10

2007-07-10

Trinh, Sonny (Department: 2618)

Telecommunications

Transmitter

Angle modulation

C455S118000, C455S323000

Reexamination Certificate

active

10939278

ABSTRACT:
The invention is directed to a frequency conversion circuit arrangement a mobile radio containing such circuit which provide frequency conditioning with a frequency mixer. In this context, a feedback path from the output of the frequency mixer to a further input on the frequency mixer is provided which has a frequency divider. Particularly if the frequency divider is in the form of a divide-by-two frequency divider, the frequency conversion circuit exhibits low power and has a small chip area and permits the circuit to be operated without reaction on a frequency generator in order to actuate a frequency converter for a useful signal in a transceiver.

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patent: 7030667 (2006-04-01), Grewing et al.
patent: 2001/0054919 (2001-12-01), Wang
patent: 35 33 104 (1987-04-01), None
patent: 197 10 490 (1998-10-01), None
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“A Novel Frequency Divider Configuration for Micro- and Millimeter-Wave Signals”, P Nüchter and W. Menzel, IEEE Microwave and Guided Wave Letters, vol. 6, No. 7, Jul. 1996, 3 pgs.

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