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A six-port demodulator in homodyne direct conversion receiver is presented in this paper. The direct-IF or zero-IF conversion process is performed by several circuit designs in the demodulator such as six-port correlator and proposed power detector circuit. They are able to produce baseband signals and constellation diagram of QPSK operation. Six-port correlator contains double-stage Wilkinson power...
In this paper, the design and operation of a compact six-port correlator operating as a QPSK modulator/demodulator in a UWB transceiver has been presented. A microstrip-slot technique has been used to obtain full integration of the correlator. The design has been accomplished with the use commercially available full-wave CAD package, CST Microwave Studio. The signal analysis at receiver and transmitter...
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