H - Electricity – 03 – D
Patent
H - Electricity
03
D
329/14
H03D 3/00 (2006.01) H03D 3/16 (2006.01)
Patent
CA 1065420
IMPROVED MULTIPLE ELECTRODE CRYSTAL FREQUENCY DISCRIMINATOR CIRCUIT ABSTRACT An improved multiple electrode crystal frequency dis- criminator is disclosed which is especially suited for inter- facing with integrated circuits and the attendant high capacitive and relatively low resistive terminations presented. The crystal discriminator includes a central electrode tuned to a reference frequency and serving as the input resonator. Two additional electrode pairs on either side thereof function as output res- onators tuned for resonance at slightly lower and slightly higher frequencies as compared to the reference frequency. These output signals within the designated passband are suit- ably detected and subtractively combined to recover the desired modulation at audio frequencies. In addition, the electrode pairs of the discriminator of the present invention have selected surface areas to precisely and independently match the impedance of the terminations to which connected. Further, freedom from undesired spurious response is assured by selective adjustment of the aspect ratio of each electrode pair while maintaining the same surface areas for optimized impedance matching.
247663
Dailing James L.
Wakat Emory A.
LandOfFree
Multiple electrode crystal frequency discriminator circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiple electrode crystal frequency discriminator circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple electrode crystal frequency discriminator circuit will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-18879