Title :
Synchronization of fractional interval counter in non-integer ratio sample rate converters
Author :
Ketola, Jaakko ; Vankka, Jouko ; Halonen, Kari
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Finland
Abstract :
This paper presents an implementation of a synchronizer circuit used in a fractional interval counter of a non-integer ratio sampling rate converter. The synchronizer enables a continuous-time operation of the sampling rate converter even if the conversion ratio cannot be exactly expressed by a binary frequency control word. A brief introduction to the interpolation for timing adjustment is also given.
Keywords :
analogue-digital conversion; counting circuits; digital circuits; digital filters; interpolation; oscillators; polynomials; software radio; synchronisation; timing; transient response; continuous-time operation; conversion ratio; digital multi-standard modulator circuits; fractional interval counter; fractional interval counter synchronization; interpolation; interpolation filters; noninteger ratio sample rate converters; number-controlled oscillator; polynomial-based impulse response; polynomial-based interpolation; software radios; synchronizer circuit; timing adjustment; Clocks; Counting circuits; Electronic circuits; Filters; Frequency synchronization; Interpolation; Laboratories; Polynomials; Sampling methods; Timing;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205898
