Receiver, in particular for mobile radio
First Claim
Patent Images
1. A receiver, comprising:
- a mixer having an input for receiving a reception signal and an output for tapping an intermediate frequency signal;
a phase locked loop for receiving a mixer clock and connected to said mixer;
an analog/digital converter connected to said output of said mixer and receiving a converter clock;
a reference generator for generating a reference clock, the reference clock being an integral multiple of the mixer clock, and the converter clock being an integral multiple of the reference clock; and
a multiplier module coupled to said reference generator and multiplying the reference clock by an integer to provide the converter clock.
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Abstract
A receiver, in particular for mobile radio, includes a receiver branch with a mixer, downstream of an analog/digital converter. A reference generator generates a reference clock, which is fed to the converters or PLL synthesizers of the mixer by integral multiplication or division. As a result, a particularly energy-saving and space-saving circuit configuration is realized, which has a low level of mutual interference between the signals and is suitable (in particular for Universal Mobile Telecommunication System, UMTS). In a preferred embodiment, the receiver is developed into a transceiver by providing a transmission path.
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Citations
13 Claims
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1. A receiver, comprising:
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a mixer having an input for receiving a reception signal and an output for tapping an intermediate frequency signal;
a phase locked loop for receiving a mixer clock and connected to said mixer;
an analog/digital converter connected to said output of said mixer and receiving a converter clock;
a reference generator for generating a reference clock, the reference clock being an integral multiple of the mixer clock, and the converter clock being an integral multiple of the reference clock; and
a multiplier module coupled to said reference generator and multiplying the reference clock by an integer to provide the converter clock. - View Dependent Claims (2, 3, 4)
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5. A transmitter, comprising:
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a mixer having an input for receiving an intermediate signal and an output for tapping a transmission signal;
a phase locked loop for receiving a mixer clock and connected to said mixer;
a digital/analog converter connected to said input of said mixer for receiving a converter clock;
a reference generator for generating a reference clock, the reference clock being an integral multiple of the mixer clock, and the converter clock being an integral multiple of the reference clock; and
a multiplier module coupled to said reference generator and multiplying the reference clock by an integer to provide the converter clock. - View Dependent Claims (6, 7, 8)
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9. A transceiver, comprising:
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a receive path, including;
a first mixer having an input for receiving a reception signal and an output for tapping a first intermediate frequency signal;
a first phase locked loop for receiving a first mixer clock and connected to said first mixer;
an analog/digital converter connected to said output of said first mixer for receiving a first converter clock;
a transmit path, including;
a second mixer having an input for receiving a second intermediate signal and an output for tapping a transmission signal;
a second phase locked loop for receiving a second mixer clock and connected to said second mixer;
a digital/analog converter connected to said input of said second mixer for receiving a second converter clock;
a reference generator for generating a reference clock, the reference clock being an integral multiple of the first mixer clock and of the second mixer clock, the first converter clock being an integral multiple of the reference clock, the second converter clock being an integral multiple of the reference clock; and
a multiplier module for multiplying the reference clock by an integer to provide the first converter clock and the second converter clock.
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10. A method for receiving a reception signal, which comprises the steps of:
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receiving a mixer clock in a phase locked loop;
mixing the reception signal and providing an intermediate frequency signal in response to the mixer clock;
analog/digital converting the intermediate frequency signal using a converter clock;
generating a reference clock, the reference clock being an integral multiple of the mixer clock; and
providing the converter clock in response to the reference clock using an integer multiplier module. - View Dependent Claims (11)
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12. A method for transmitting a transmit signal, which comprises the steps of:
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receiving a mixer clock in a phase locked loop;
mixing an intermediate frequency signal and providing the transmit signal in response to the mixer clock;
digital/analog converting an input signal using a converter clock and providing the intermediate frequency signal;
generating a reference clock, the reference clock being an integral multiple of the mixer clock; and
providing the converter clock in response-to the reference clock using an integer multiplier module. - View Dependent Claims (13)
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Specification