Abstract
Software defined radio (SDR) has been identified as one potential method to enhance the flexibility of wireless communication systems. This paper proposes an SDR receiver platform based on new substrate integrated waveguide (SIW) six-port structure. The proposed receiver operates from 22GHz to 26GHz for QPSK and QAM16 modulation. It is found that the combination of SDR and six-port technology can provide a great flexibility in system configuration, a significant reduction in system development cost, and also a high potential for software reuse. Such receiver shows a possible application of direct demodulator for future SDR terminals in various low cost communication systems.
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