Citation
Abstract
This article presents a class of optimum digital filters for digital phase locked loops of the DSN Advanced Receiver. The filter minimizes a weighted combination of the variance of the random component of the phase error and the sum square of the deterministic dynamic component of phase error at the output of the numerically controlled oscillator (NCO). By varying the weighting coefficient over a suitable range of values, a wide set of filters are obtained such that, for any specified value of the equivalent loop-noise bandwidth, there corresponds a unique filter in this class. This filter thus has the property of having the best transient response over all possible filters of the same bandwidth and type. The optimum filters are also evaluated in terms of their gain margin for stability and their steady-state error performance.
Details
- Volume
- 42-83
- Published
- November 15, 1985
- Pages
- 63–80
- File Size
- 942.3 KB