Title :
Low cost microwave X-band generator
Author :
Matuszczak, Piotr ; Kulas, Lukasz ; Nyka, Krzysztof
Author_Institution :
Fac. of Electron., Telecommun. & Inf., Gdansk Univ. of Technol., Gdańsk, Poland
Abstract :
A low cost microwave X-band generator for educational purposes was designed and built. Its simple construction and user´s interface makes it suitable for student laboratory. The generator is based on single frequency conversion concept. It uses a digitally tunable PLL chip for intermediate frequency generation and active frequency multiplier for frequency conversion. The generator covers 9,7 - 11 GHz part of X frequency band. The frequency tuning may also be done automatically in a slow frequency sweep mode, which saves a lot of manual work. The output signal is amplitude modulated in order to match with VSWR meters used in microwave laboratory. The signal level is stabilized by the automatic gain control unit comprising a dedicated MCU, digitally controlled attenuator and power detector, which reduces power fluctuations over whole frequency band.
Keywords :
frequency multipliers; microwave frequency convertors; microwave generation; phase locked loops; VSWR; active frequency multiplier; automatic gain control unit; frequency 9.7 GHz to 11 GHz; frequency conversion; frequency tuning; intermediate frequency generation; microwave x-band generator; tunable PLL chip; Attenuators; Frequency conversion; Frequency synthesizers; Laboratories; Microwave amplifiers; Monitoring; Synthesizers; Automatic Gain Control; Generator; PLL; X-Band;
Conference_Titel :
Information Technology (ICIT), 2010 2nd International Conference on
Conference_Location :
Gdansk
Print_ISBN :
978-1-4244-8182-8
