Reception circuit for a wave modulated at one time in frequency

Details Reception circuit for a wave modulated at one time in frequency Reception circuit for a wave modulated at one time in frequency

1984-10-09

1986-04-15

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329110, 329134, 329145, 455207, 333193, H03D 300

Patent

active

045830479

ABSTRACT:
The circuit comprises a surface acoustic wave device. On the substrate (32) f the surface acoustic wave device, are provided two pairs of input transducers (33, 34, 35, 36) connected, in parallel, to the input of the circuit. The transducers (33, 34, 35, 36) initiate surface acoustic waves corresponding to the signals applied on two pairs of paths (41, 42, 43, 44) ending at two pairs of reception transducers (37, 38, 39, 40). The outputs of the output transducers of the first pair (37, 38) are connected to the two inputs of a mixer (28) whose output yields the received digital signal. The outputs of the second pair of transducers (39, 40) are connected to the inputs of two limiters (26, 27) whose outputs are connected to the two inputs of a mixer (29) whose output yields the analog signal. The difference in path lengths of the first pair (41, 42) introduces a delay of the order of one bit and the difference in path lengths of the second pair (43, 44) introduces a delay equal to the inverse of twice the bandwidth between the peaks of the discriminator thus constituted.

REFERENCES:
patent: 3835422 (1974-09-01), Hartemann
patent: 3936751 (1976-02-01), Holmes et al.
patent: 3980962 (1976-09-01), Scotter
patent: 3987367 (1976-10-01), Hartemann
patent: 4169286 (1979-09-01), Uzunoglu
patent: 4234930 (1980-11-01), Campbell

Affiliated with

Also associated with

Rating

Reception circuit for a wave modulated at one time in frequency does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reception circuit for a wave modulated at one time in frequency , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reception circuit for a wave modulated at one time in frequency will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1441559