Switched capacitor filters for a 1200 baud FFSK modem
Abstract
The design of two 8th order switched capacitor filters for anFFSKmodem is described. The response of the filters in the passband is not made flat, in order to optimize the signal to noise ratio of the transmission channel. The design of passive prototypes and the criteria for the choice of the best passive and active topologies are described. Computer simulation results of the performances of the SC filters are given.
- Publication:
-
Annals of Telecommunications
- Pub Date:
- May 1985
- DOI:
- Bibcode:
- 1985AnTel..40..235C
- Keywords:
-
- Bandpass Filters;
- Capacitors;
- Frequency Shift Keying;
- Modems;
- Network Synthesis;
- Equivalent Circuits;
- Frequency Response;
- High Pass Filters;
- Radio Attenuation;
- Electronics and Electrical Engineering;
- Circuit design;
- Switched capacitor;
- Band pass filter;
- Modem;
- Mobile radiocommunication;
- Frequency shift keying;
- Optimization;
- Passive filter;
- Active filter;
- Frequency response;
- Conception circuit;
- Capacité commutée;
- Filtre passe bande;
- Radiocommunication service mobile;
- Modulation déplacement fréquence;
- Optimisation;
- Filtre passif;
- Filtre actif;
- Réponse fréquence