TY - JOUR
AU - Qin, Jinguo
AB - The orthogonal frequency discrimination is achieved by utilizing waveform transformation in the phase-shift multiplier frequency discriminator. Firstly, the constraint relationship is derived between the circuit parameters of the phase shifter and the maximum frequency spectrum of the input FM signal. Subsequently, the demodulation system for the input FM signal is designed using a combination of a phase shifter and multiplier. Finally, the maximum frequency offset range of distortion-free output from the frequency discriminator is analyzed, and the influence of resistance and capacitance parameters in the phase-shift network on the input frequency offset range is researched using parameter scanning analysis. Theoretical derivation analysis and simulation testing confirm that this designed circuit can effectively demodulate FM signals with a wide range of non-distortion when the circuit parameters match those of input signals. This circuit simulation method has been proven to visually demonstrate different output waveforms under various parameter settings, thereby facilitating the visualization of abstract theoretical knowledge.
TI - Performance simulation and analysis of the orthogonal frequency discriminator
JO - Journal of Physics Conference Series
DO - 10.1088/1742-6596/2810/1/012032
DA - 2024-07-01
UR - https://www.deepdyve.com/lp/iop-publishing/performance-simulation-and-analysis-of-the-orthogonal-frequency-LKc4P2eKCQ
VL - 2810
IS - 1
DP - DeepDyve
ER -