Meander delay line having delay-time peaks which are a function

Details Meander delay line having delay-time peaks which are a function Meander delay line having delay-time peaks which are a function

1997-03-26

1999-07-13

Lee, Benny

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333156, H01P 118

Patent

active

059232307

ABSTRACT:
A delay line is produced by firing a laminated body and terminals (an input terminal, an output terminal and grounding terminals) which are formed by printing or another method on the side faces, top and bottom surfaces of the laminated body. The laminated body has four dielectric rectangular sheet layers (dielectric constant .epsilon.r=approximately 6.3) containing mainly barium oxide, aluminum oxide and silica. The laminated body is formed by layering from top to bottom, in the order given, a first sheet layer, a second sheet layer which has a grounding conductor formed on its top surface, a third sheet layer which has a transmission line meanderingly formed on its top surface, and a fourth sheet layer which has another grounding conductor formed on its top surface. The transmission line has a meandering shape which defines a meander width, and has delay time peaks at respective frequencies, wherein the frequency fn at the n-th delay time peak substantially satisfies the formula: ##EQU1## where Co represents the speed of light; .epsilon.r, the dielectric constant of the dielectric layer; A, the meander width of the meanderingly formed transmission line; and n, a natural number. The transmission line may be formed by connecting in series a plurality of meanderingly formed transmission line segments having different respective meander widths. The plurality of transmission line segments may be formed opposite each other with the dielectric layer provided therebetween, the plurality of transmission line segments being connected to each other at ends thereof.

REFERENCES:
patent: 4949057 (1990-08-01), Ishisaki et al.
patent: 5073755 (1991-12-01), Neufeld
patent: 5146191 (1992-09-01), Mandai et al.

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