Transmission arrangement for transmitting data continuously in the time domain
AssigneeInfineon Technologies AG
InventorZdravko Boos
Life of this patent
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Abstract
A transmission arrangement is provided for transmitting data continuously in the time domain. The arrangement includes at least one programmable amplifier (7, 14) in the baseband (1) or in the radio frequency path (3) in the signal processing chain for the signal which is to be transmitted. This programmable amplifier is distinguished in that the signal which actuates the programmable amplifier (7, 14) is a discrete-value signal. By dispensing with complex digital/analog converters, the principle described allows markedly reduced power consumption in transmitters which use code multiple access methods.
Claims27
A transmission arrangement for transmitting data continuously in the time domain, having:
- a baseband signal processing unit, designed for complex-value signal processing for a useful signal which is to be transmitted, having an in-phase signal path and a quadrature signal path;
- a quadrature modulator having a first input that is coupled to the in-phase signal path, having a second input that is coupled to the quadrature signal path, and having an output;
- a radio frequency path, which is coupled to the output of the quadrature modulator,
- a control unit that provides a discrete-value control signal for influencing the transmission power of the transmission arrangement;
- a first programmable amplifier that is arranged in the baseband signal processing unit in order to amplify the useful signal which is to be transmitted using an adjustable gain factor, the first programmable amplifier having a control input which is coupled to the control unit in order to transmit the discrete-value control signal, the first programmable amplifier comprising an amplifier component that is arranged in the in-phase signal path and an amplifier component that is arranged in the quadrature signal path;
- and
- a second programmable amplifier that is arranged in the radio frequency path, the second programmable amplifier comprising a control input that is coupled to the control unit in order to transmit a discrete-value control signal.
A communications device comprising:
- a first low pass filter;
- a first programmable amplifier with an input coupled to an output of the first low pass filter;
- a second low pass filter;
- a second programmable amplifier with an input coupled to an output of the first low pass filter;
- a control unit with an output coupled to a control input of the first programmable amplifier and to a control input of the second programmable amplifier;
- a first multiplier with a first input coupled to an output of the first programmable amplifier, the first multiplier having a second input receiving a signal at a first frequency;
- a second multiplier with a second input coupled to an output of the second programmable amplifier, the second multiplier having a second input receiving a signal at a second frequency that is frequency-shifted from the first frequency;
- a summation node having a first input coupled to an output of the first multiplier and a second input coupled to an output of the second amplifier;
- a passive programmable amplifier;
- with an input coupled to an output of the summation node;
- a third programmable amplifier with an input coupled to an output of the passive programmable amplifier;
- a bandpass filter with an input coupled to an output of the third programmable amplifier;
- and
- a power amplifier with input coupled to an output of the bandpass filter.
Dependencies are inferred from the claim text.