Research, design, and fabrication of transmitter high-power, wideband for viba transceiver system at S band

Abstract

Extending the connection distance and increasing system capacity are among the most concerning issues in modern Viba transceiver systems. Above all, the higher the security demand and more complex signal transmission of wideband lead to the requirement of increasing transmission capacity and expanding bandwidth. This paper presents design solutions and fabrication of high-power, wideband signal transmitters at S-band, applied to modern microwave transceiver systems. The proposed transmitter is designed in a series-multistage amplifier structure, the interstage impedance matching solution combined with the wideband impedance matching method (frequency peak offset method) and has achieved such criteria as high gain (60 dB), wide frequency range (2.1-2.23 GHz) with a maximum power of 45 W. Moreover, the transmitter not only shows its superiority by automatically adjusting the gain (and output power) flexibly depending on the input signal power level, the optimization of power consumption but also can continuously run effectively for a long time thanks to the method of thermal stability.