Wideband RF Signal Generator Implementation for Demodulator/Receiver Testing in Systems of SDR
نویسندگان
چکیده
In this paper, the design of a wideband RF signal generator for demodulator/receiver testing is presented. The design of test generator is based on direct digital synthesizer (DDS) and voltage-controlled oscillator (VCO), controlled by microprocessor. It provides generation of arbitrary waveform signal up to 4.5 GHz. Output signal level is adjustable with precision of 0.5 dB. Dynamic range of RF test signal generator is 130 dB. Generation of octal frequency shift keying, quadrate phase shift keying and amplitude modulation is described in this work. Results of spectrum measurements are presented.
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