Accession Number : ADD005990

Title :   Junction-Storage JFET Bucket-Brigade Structure.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Barron,Mark B ; Butler,Walter J

Report Date : 24 Apr 1979

Pagination or Media Count : 5

Abstract : The novel JFET bucket-brigade structure disclosed eliminates the need for the MOS overlap capacitance of a conventional JFET brigade, and thereby greatly reduces the total storage capacitance. In comparison with conventional prior art JFET BBDL structures the novel device herein disclosed provides larger contact areas for gate electrodes, it eliminates the prior need for close spacing between clock electrodes, and the need for thin oxides. The disclosed device is a less complex structure than the prior art and thus provides a higher yield during manufacturing. Typical eighty stage embodiments provide measured transfer efficiencies at 50 MHz that are approximately a factor of five times better than that previously measured for a 10-stage conventional prior art JFET bucket brigade. (Author)

Descriptors :   *Patents, *Junction transistors, *Field effect transistors, *Delay circuits, Solid state electronics, Charge transfer, Capacitance, High frequency, Performance(Engineering), P type semiconductors, Gates(Circuits), Layers, Epitaxial growth

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE