Wave transmission lines and networks – Coupling networks – Delay lines including long line elements
Reexamination Certificate
2007-01-09
2007-01-09
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Coupling networks
Delay lines including long line elements
Reexamination Certificate
active
11059318
ABSTRACT:
A phase shifter which uses Bragg gratings and having tunable phase shift functions with respect to input signals in an RF band without using a separate RF device. The phase shifter includes a dielectric layer, a first conductive layer formed on an upper surface of the dielectric layer lengthwise along the dielectric layer so as to provide a signal path for the input signal, a second conductive layer formed at a first end of a lower surface of the dielectric layer so as to form Bragg gratings lengthwise along the dielectric layer, a third conductive layer formed at a second end of the lower surface of the dielectric layer in line with the second conductive layer so as to form Bragg gratings lengthwise along the dielectric layer, and a moving unit for adjusting a distance between the second conductive layer and the third conductive layer within a predetermined length. The phase of the signal of the RF band is shifted by adjusting the distance between the second and third conductive layers without using a separate RF device, thereby significantly reducing the manufacturing cost for the phase shifter.
REFERENCES:
patent: 5406233 (1995-04-01), Shih et al.
patent: 6208222 (2001-03-01), Sinsky
Lee Benny
Roylance Abrams Berdo & Goodman L.L.P.
Samsung Electronics Co,. Ltd.
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