Integrated circuit for mobile radio transceivers
First Claim
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1. An integrated circuit for a mobile radio transceiver, comprising:
- a radio-frequency assembly configured to produce a radio-frequency mobile radio signal in a mobile radio frequency range; and
a modulator configured to convert transmission data into an analogue modulated transmission signal in a frequency band outside the mobile radio frequency range, wherein the modulator comprises a PLL frequency synthesizer, and wherein the PLL frequency synthesizer comprises;
a voltage-controlled oscillator configured to output the analogue modulated transmission signal;
a phase detector configured to determine a phase difference between a feedback signal, derived from the analogue modulated transmission signal, and a reference signal, and take the determined phase difference as a basis for controlling the voltage-controlled oscillator; and
a feedback loop configured to provide the feedback signal, wherein the feedback loop comprises a frequency divider that is controlled by the transmission data.
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Abstract
The invention relates to an integrated circuit in a mobile radio transceiver. This circuit includes a radio-frequency assembly for producing a mobile radio signal and a modulator for converting transmission data into an analogue, modulated transmission signal which is broadcast in a frequency band outside the mobile radio frequency range.
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Citations
30 Claims
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1. An integrated circuit for a mobile radio transceiver, comprising:
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a radio-frequency assembly configured to produce a radio-frequency mobile radio signal in a mobile radio frequency range; and a modulator configured to convert transmission data into an analogue modulated transmission signal in a frequency band outside the mobile radio frequency range, wherein the modulator comprises a PLL frequency synthesizer, and wherein the PLL frequency synthesizer comprises; a voltage-controlled oscillator configured to output the analogue modulated transmission signal; a phase detector configured to determine a phase difference between a feedback signal, derived from the analogue modulated transmission signal, and a reference signal, and take the determined phase difference as a basis for controlling the voltage-controlled oscillator; and a feedback loop configured to provide the feedback signal, wherein the feedback loop comprises a frequency divider that is controlled by the transmission data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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producing a radio-frequency mobile radio signal lying in a mobile radio frequency range in an integrated circuit comprising a mobile radio transceiver; converting transmission data into an analogue modulated transmission signal using a modulator implemented in the integrated circuit, wherein converting the transmission data is performed using the modulator comprises using a PLL frequency synthesizer; and broadcasting the analogue modulated transmission signal in a frequency band that is outside the mobile radio frequency range, wherein converting the digital audio data by the PLL frequency synthesizer comprises; outputting the analogue modulated transmission signal at an output of a voltage-controlled oscillator; determining a phase difference between a feedback signal, derived from the analogue modulated transmission signal and a reference signal; controlling the voltage-controlled oscillator based on the determined phase difference; providing the feedback signal by a feedback loop which comprises a frequency divider; and controlling the frequency divider by the transmission data. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. An integrated circuit for a mobile radio transceiver, comprising:
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a radio-frequency assembly configured to produce a radio-frequency mobile radio signal in a mobile radio frequency range; and a modulator configured to convert transmission data into an analogue modulated transmission signal in a frequency band outside the mobile radio frequency range, wherein the modulator comprises a PLL frequency synthesizer, and wherein the PLL frequency synthesizer is configured to clock components of the mobile radio transceiver during mobile radio operation of the mobile radio transceiver.
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29. An integrated circuit for a mobile radio transceiver, comprising:
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a radio-frequency assembly configured to produce a radio-frequency mobile radio signal in a mobile radio frequency range; and a modulator configured to convert transmission data into an analogue modulated transmission signal in a frequency band outside the mobile radio frequency range, wherein the modulator comprises a PLL frequency synthesizer, and wherein the PLL frequency synthesizer is configured to produce phase-modulated mobile radio signals during mobile radio operation of the mobile radio transceiver.
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30. An integrated circuit for a mobile radio transceiver, comprising:
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a radio-frequency assembly configured to produce a radio-frequency mobile radio signal in a mobile radio frequency range; and a modulator configured to convert transmission data into an analogue modulated transmission signal in a frequency band outside the mobile radio frequency range, wherein the modulator comprises an IQ vector modulator, and wherein the IQ vector modulator comprises a mixing stage that is configured to operate as a mixing stage for the mobile radio signal during mobile radio operation of the mobile radio transceiver.
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Specification