The Signal and Noise Analysis of Direct Conversion EHM Transceivers

The Signal and Noise Analysis of Direct Conversion EHM Transceivers

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A Hayward HDF Heater Parts direct conversion modulator-demodulator with even harmonic mixers with emphasis on noise analysis is presented.The circuits consist of even harmonic mixers (EHMs) realized with antiparallel diode pairs (APDPs).We evaluate the different levels of I/Q imbalances and DC offsets and use signal space concepts to analyze the bit error rate (BER) of Folding Ramp the proposed transceiver using M-ary QAM schemes.

Moreover, the simultaneous analysis of the signal and noise has been presented.