Receiver, in particular for mobile radio
First Claim
Patent Images
1. A transceiver, comprising:
- 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 mixer for receiving a first converter clock;
a reference generator for generating a reference clock, the reference clock being an integral multiple of the first mixer clock, and the first converter clock being an integral multiple of the reference clock;
a second mixer having an input for receiving a second intermediate frequency 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; and
a digital/analog converter connected to said input of said second mixer for receiving a second converter clock, the reference clock being an integral multiple of the second mixer clock, and the second converter clock being an integral multiple of the reference 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.
29 Citations
9 Claims
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1. A transceiver, comprising:
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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 mixer for receiving a first converter clock; a reference generator for generating a reference clock, the reference clock being an integral multiple of the first mixer clock, and the first converter clock being an integral multiple of the reference clock; a second mixer having an input for receiving a second intermediate frequency 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; and a digital/analog converter connected to said input of said second mixer for receiving a second converter clock, the reference clock being an integral multiple of the second mixer clock, and the second converter clock being an integral multiple of the reference clock. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A transceiver for mobile radio, comprising:
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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 mixer for receiving a first converter clock; a reference generator for generating a reference clock, the reference clock being an integral multiple of the first mixer clock, and the first converter clock being an integral multiple of the reference clock; a second mixer having an input for receiving a second intermediate frequency 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; and a digital/analog converter connected to said input of said second mixer for receiving a second converter clock, the reference clock being an integral multiple of the second mixer clock, and the second converter clock being an integral multiple of the reference clock.
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Specification