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Izvestiya Vysshikh Uchebnykh Zavedenii. Elektronika

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Controlled generators are an important component of wide-range measuring equipment. A 10-cm range (2.1-3.7 GHz) wave generator is a part of the X1-55 circuit analyzer. However, there is no data on detecting parasitic parameters of the output signal - tuning nonlinearity, frequency run-out, frequency dependence on the supply voltage, harmonic levels - in technical description of the X1-55 measuring instrument. In this work, experimental characteristics of a 10-cm range wave generator are considered, including modulation characteristic, frequency dependence on the supply voltage, frequency run-out, and output signal spectrum in the near and far zones. The functional diagram of driving part of the generator and the design description are given. The following results were obtained: operating frequency range is 2.1-3.7 GHz; power output is (15.8 ± 0.44) dBm; control voltage is from 2 to 36 V; average gain slope of modulation characteristic is 0.45 MHz/V; positive supply voltage (+12 V); negative supply voltage (-6 V); second harmonic suppression is 31.7 dB; third harmonic suppression is 33.7 dB. The current consumption in the +12 V circuit was 110 mA. Comparison of predetermined and obtained basic values of generator parameters has demonstrated the compliance with basic requirements specified for these devices.
Anatoly N. Zikiy
JSC “Taganrog Scientific Research Institute of Communication” (Russia, 347900, Taganrog, Sedov st., 3)
Alexey S. Kochubey
JSC “Taganrog Scientific Research Institute of Communication” (Russia, 347900, Taganrog, Sedov st., 3)
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