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US 7,398,074 B2Granted
Integrated transceiver circuit with low interference production and sensitivity
AssigneeInfineon Technologies AG
InventorsPeter Pfann, Zdravko Boos
Life of this patent
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Abstract
An integrated transceiver circuit has a reception path, which in turn has a mixer unit for demodulation of a received signal. An analog/digital converter unit is connected in the reception path downstream from the mixer unit. A first frequency divider is connected between the mixer unit and a voltage controlled oscillator in order to predetermine the demodulation frequency. A second frequency divider is connected between the oscillator and the analog/digital converter unit in order to predetermine the sampling frequency.
Claims22
An integrated transceiver circuit, comprising:
- a reception path comprising:
- a mixer unit configured to demodulate a received signal;
- an analog/digital converter unit connected downstream from the mixer unit;
- a first voltage controlled oscillator;
- a first frequency divider connected between the first voltage controlled oscillator and the mixer unit, and configured to obtain a demodulation frequency for use by the mixer unit;
- and
- a second frequency divider connected between the first voltage controlled oscillator and the analog/digital converter unit, and configured to obtain a sampling frequency for use by the analog/digital converter unit;
- and
- a transmission rath comprising:
- a modulator configured to modulate a signal to be transmitted;
- a second voltage controlled oscillator;
- a third frequency divider connected between the second voltage controlled oscillator and the modulator, and configured to obtain a modulation frequency for use by the modulator;
- a digital/analog converter unit connected upstream of the modulator;
- and
- a fourth frequency divider connected between the second voltage controlled oscillator and the digital/analog converter unit, and configured to obtain a sampling frequency for use by the digital/analog converter unit.
12 more elements
A method for processing a signal, comprising:
- obtaining a demodulation frequency for use by a mixer unit in a reception path of an integrated transceiver circuit with a first frequency divider connected between a first voltage controlled oscillator and the mixer unit;
- demodulating a received signal with the mixer unit and the obtained demodulation frequency;
- obtaining a sampling frequency for use by an analog to digital converter unit with a second frequency divider connected between the first voltage controlled oscillator and the analog to digital converter unit;
- performing a digitizing operation on the demodulated received signal with the analog to digital converter and the obtained sampling frequency;
- obtaining a modulation frequency for use by a modulator in a transmission path of the integrated transceiver circuit with a third frequency divider connected between a second voltage controlled oscillator and the modulator;
- modulating a signal to be transmitted with the modulator and the obtained modulation frequency;
- obtaining a sampling frequency for use by a digital to analog converter unit with a fourth frequency divider connected between the second voltage controlled oscillator and the digital to analog converter unit;
- and
- performing a de-digitizing oreration on the modulated received signal with the digital to analog converter and the obtained sampling frequency.
6 more elements
Dependencies are inferred from the claim text.