Patent
1977-07-05
1979-07-24
Richardson, Robert L.
325464, H04B 116
Patent
active
041624513
ABSTRACT:
An improved channel selector for a television receiver includes a metal semiconductor field effect transistor, i.e. MESFET mixer in combination with an acoustic surface wave device filter. The MESFET mixer simultaneously receives a plurality of channels and mixing signals of a selectable frequency, and in response thereto frequency shifts selectable channels to a predetermined center frequency. The MESFET mixer has almost perfect square law characteristics, and accordingly introduces extremely small distortion into the system. The acoustic surface wave device filter has an input coupled to the output of the MESFET mixer. The surface wave device filter provides essentially all of the channel selectivity of the receiver.
REFERENCES:
patent: 3942120 (1976-03-01), Ham
Donaldson Richard L.
Hiller William E.
Richardson Robert L.
Sharp Melvin
Texas Instruments Incorporated
LandOfFree
MESFET-device surface-wave-device channel selector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with MESFET-device surface-wave-device channel selector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MESFET-device surface-wave-device channel selector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1289224