Abstract
The non-linear behavior of PLL FM demodulators were investigated theoretically and experimentally. A test circuit with a complete receiver, a PLL FM demodulator, and measurement system was devised in order to excite an second order type II PLL with arbitrary FM waveforms. Phase error and/or VCO tuning voltage variation were recorded in order to generate a range of parameters using Matlab, Poincaré sections, phase-plane portraits, VCO spectra and bifurcation diagrams. An optimum waveform was derived, which was capable of causing a non-linear response with minimum peak deviation.
Original language | English |
---|---|
Pages (from-to) | 23-28 |
Number of pages | 6 |
Journal | IEE Colloquium (Digest) |
Issue number | 102 |
Publication status | Published - 5 May 1999 |
Externally published | Yes |