Design and Development of the VHF to S-Band Transverter
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Abstract
This paper presents the design and construction of an S-band Up and Downconverters for LEO satellite and UAV applications. The Up & Down converters are constructed with subsystem modules. The modules are designed and built applying simulation techniques to optimize performance details using automotive grade components. The 140 MHz IF standard is used. The PLL reference clock oscillator in the converters is either locked to a highly stable internal 10 MHz reference or external reference signal. If the proper signal level is present, the LO PLL will automatically lock to the external reference. The spectral purity, low phase noise and stability of the LO signals exceed the requirements of IESS-308/309.
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