Up converter and signal processing method thereof

A frequency converter, radio frequency signal technology, used in instruments, beacon systems using radio waves, measuring devices, etc.
CN101435862AInactive Publication Date: 2009-05-20BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2009-05-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an up converter and a signal processing method thereof. The up converter mainly comprises a local frequency synthesizer, a quadrature modulator, a power automatic gain control module and a power attenuation module. The signal processing method mainly comprises: based on received frequency scale input signal and set frequency allocation data, the local frequency of various frequency points is generated, a radio frequency local signal having the local frequency and baseband signals of I and Q ways are mixed in the quadrature modulation mode to obtain a single side band radio frequency modulation signal; and the power of the single side band radio frequency modulation signal is subjected to automatic gain control, and then to accurate power control. The up converter can output the signals (such as navigation signal) compatible with a plurality of frequency points, and the frequency by which the signals are outputted can be conveniently changed in real time by a user during operation.
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Description

technical field

[0001] The invention relates to the field of electronic applications, in particular to an up-converter with real-time controllable output signal power and carrier frequency and a signal processing method thereof. Background technique

[0002] Satellite navigation systems such as GPS (Global Position System, Global Positioning System), GLONASS (GLobal Orbiting NAvigation Satellite System, Global Orbiting Navigation Satellite System), GALI LEO (Galileo) and CNSS (Chinese Navigation Satellite System, China Navigation Satellite System) are used in military and Civilian fields have been increasingly widely used. Satellite navigation system-level test verification and receiver development and testing are inseparable from high-performance satellite navigation signal simulators.

[0003] The satellite navigation signal simulator is a complex system combining simulation calculation software and signal generator hardware. The up-converter is an important component mod...

Claims

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