Signal generator and signal generating method
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsMichael König, Daniel Markert, Gerald Tietscher
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Abstract
The present invention relates to generation of radio frequency signals by digital components. In particular, data for specifying a baseband signal are generated at a centralized processing device, and the data relating to the baseband signal are transmitted to radio frequency transmitters via a digital network. The radio-frequency transmitters digitally generate radio-frequency signals based on the data obtained via the digital network, and the generated radio frequency signals are provided to a connector or an antenna.
Claims18
A signal generator for generating a radio frequency signal, comprising:
- a baseband processing device for generating digital baseband data relating to a baseband signal;
- a number of radio frequency transmitters, each radio frequency transmitter comprising digital radio frequency generation device and a connector or an antenna, said number of radio frequency transmitters being adapted to receive the digital baseband data, and said digital radio frequency generation device is adapted to generate a digital radio frequency signal based on the digital baseband data, and the digital radio frequency signal directly output to the
- connector or the antenna, wherein the generation of the digital radio frequency signal is completely performed in a digital domain by a digital processing device;
- and
- a digital network for communicatively coupling the baseband processing device and the number of radio frequency transmitters,
- wherein said baseband processing device is configured to receive data to be included in the radio frequency signal and apply a modulation of the baseband signal for including the received data in the baseband of the radio frequency signal.
A signal generating method for generating a radio frequency signal, the method comprising:
- receiving, by a baseband processing device, data to be included in the radio frequency signal;
- applying, by a baseband processing device, a modulation of the baseband signal for including the received data in the baseband of the radio frequency signal;
- generating, by the baseband processing device, digital baseband data relating to a baseband signal;
- transmitting, by a digital network, the generated digital baseband data to a number of radio frequency transmitters;
- receiving the digital baseband data by a number of radio frequency transmitters;
- generating a digital radio frequency signal based on the digital baseband data by digital radio frequency generation devices of the number of radio frequency transmitters, wherein the generation of the digital radio frequency signal is completely performed in a digital domain by a digital processing device;
- and
- outputting the digital radio frequency signal directly to a connector or an antenna of the number of radio frequency transmitters.
Dependencies are inferred from the claim text.