Title :
Reliable analog bandpass signal generation
Author :
Veillette, Benoît R. ; Roberts, Gordon W.
Author_Institution :
Microelectron. & Comput. Syst. Lab., McGill Univ., Montreal, Que., Canada
Abstract :
A novel method for generating bandpass type signals is introduced. A phase function is turned into a jittery bandpass signal using a delta-sigma modulator and digital phase modulation. This signal can be used to verify the correct operation of a charge-pump phase-locked loop. After validation of this circuit, more complex communication signals such as GMSK may be generated for test purposes. As all components are digital or may be tested digitally, this scheme is amenable to built-in self-test
Keywords :
jitter; minimum shift keying; phase locked loops; phase modulation; sigma-delta modulation; signal generators; GMSK; analog bandpass signal generation; built-in self-test; charge-pump phase-locked loop; communication signals; delta-sigma modulator; digital phase modulation; jittery bandpass signal; phase function; Automatic testing; Built-in self-test; Charge pumps; Circuit testing; Clocks; Frequency; Low-frequency noise; Phase locked loops; Phase modulation; Signal generators;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704198
