Title :
Low expense architectures for a dynamic spectrum analyzer based on SC-filters
Author :
Marschner, Uwe ; Fischer, Wolf Joachim ; Kranz, Emst Georg
Author_Institution :
Lab. of Semicond. & Microsystems Technol., Tech. Univ. Dresden, Germany
fDate :
31 May-3 Jun 1998
Abstract :
In this paper new architectures for a dynamic spectrum analyzer are presented. The basis of the spectrum analyzer is a Switched Capacitor (SC) filter which is periodically reprogrammed or tuned by a change of the clock frequency. For a small reprogramming cycle time, a hyperbolic change of the clock frequency is applied. In the first part of the paper the effects of a stepwise and continuous reprogramming are investigated. In the second part analog and digital hyperbolic clock generators are presented
Keywords :
analogue circuits; clocks; digital circuits; programmable filters; signal generators; spectral analysers; switched capacitor filters; timing; timing circuits; SC-filters; analog hyperbolic clock generators; clock frequency; continuous reprogramming; digital hyperbolic clock generators; dynamic spectrum analyzer; low expense architectures; reprogramming cycle time; stepwise reprogramming; switched-capacitor filter; Band pass filters; Capacitors; Chebyshev approximation; Circuits; Clocks; Frequency; Laboratories; Passband; Q factor; Spectral analysis;
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.1998.706907
