Samuel C Kuo

Address:

13594 Old Oak Way, Saratoga, CA 95070

Phone:

4088512562

VIN:

JTHBE1KS5A0049838

Make:

LEXUS

Model:

GS 350

Year:

2010

US Patent:

45062684, Mar 19, 1985

Filed:

Oct 3, 1983

Appl. No.:

6/538353

Inventors:

Samuel C. Kuo - Saratoga CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01Q 1110

US Classification:

3437925

Abstract:

A log-periodic antenna comprises two arrays of dimensionally tapered radiating elements disposed in the E-plane and each fed by a balanced line consisting of the inner conductors of two coaxial cables. In one embodiment the elements of each array are dipoles and in another embodiment are formed of continuous conductive strips in zig-zag patterns on non-conductive support members. Each array preferably have two sets of elements disposed in planes, respectively, which converge toward the smaller end of the array with vertically aligned radiating elements of each set projecting in opposite directions from the array axis. Periodic gain dropout anomalies across the antenna operating band are eliminated by use of a shielded feed line.

US Patent:

47542870, Jun 28, 1988

Filed:

Nov 9, 1987

Appl. No.:

7/118378

Inventors:

Warren M. Shelton - Milpitas CA
Samuel C. Kuo - Saratoga CA

Assignee:

GTE Government Systems Corporation - Stamford CT

International Classification:

H01Q 1110

US Classification:

3437925

Abstract:

The foreshortened dipoles of the antenna described in U. S. Pat. No. 3,732,572 are further substantially shortened without performance impairment with a new construction in which each radiating element comprises a planar rectangular body electrically connected to the feed line by a stem attached to the body remotely from the feed line and spaced slightly from the plane of the body.

US Patent:

47853077, Nov 15, 1988

Filed:

Jun 15, 1987

Appl. No.:

7/061624

Inventors:

Samuel C. Kuo - Saratoga CA

Assignee:

GTE Government Systems Corporation - Stamford CT

International Classification:

H01Q 1110

US Classification:

3437925

Abstract:

A crossed log-periodic dipole antenna having a unique feedline/boom structure providing improved antenna performance. The antenna is assembled from a pair of orthogonally displaced log-periodic antennas each having a pair of half-dipole structures, each structure having a half-dipole assembly and a central feed boom. The half-dipole assembly comprises a single sheet of conducting material formed to provide a central boom portion and a plurality of half-dipole elements projecting radially from opposite sides of the boom. The boom portion has a reduced thickness, a shape which complements that of the outer surface of the boom, and is press-fitted against and bonded to the boom exterior to form an integrated rigid unit. This configuration minimizes the force required to connect each half-dipole assembly with the adjacent boom, decreases the offset distance between the two dipole halves of each antenna, and reduces the electrical shadowing effect of the booms on the antennas. The invention also comprehends a method of making such an antenna.

US Patent:

46300635, Dec 16, 1986

Filed:

Oct 9, 1984

Appl. No.:

6/659054

Inventors:

Samuel C. Kuo - Saratoga CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01Q 1110

US Classification:

3437925

Abstract:

A log-periodic antenna comprises two arrays of dimensionally tapered radiating elements disposed in the E-plane and each fed by a balanced line consisting of the inner conductors of two coaxial cables. In one embodiment the elements of each array are dipoles and in another embodiment are formed of continuous conductive strips in zig-zag patterns on non-conductive support members. Each array preferably has two sets of elements disposed in planes, respectively, which converge toward the smaller end of the array with vertically aligned radiating elements of each set projecting in opposite directions from the array axis. Periodic gain dropout anomalies across the antenna operating band are eliminated by use of a shielded feed line.

US Patent:

40471802, Sep 6, 1977

Filed:

Jun 1, 1976

Appl. No.:

5/691321

Inventors:

Samuel Chung-Shu Kuo - Saratoga CA
William D. Rosser - Los Altos CA

Assignee:

GTE Sylvania Incorporated - Mountain View CA

International Classification:

H01Q 1306

US Classification:

343784

Abstract:

A broadband (8-18 GHz) radomed horn antenna system comprises a conical horn having broadband slots on the inner surface and a radome having a frusto-conical side wall and a spherically shaped transverse wall inserted into the horn. The radome wall is thin relative to operating wavelength. The radome side wall fits snugly against the inner surface of the horn wall so that transverse wall is proximate to the horn feed port with its convex side facing toward the horn aperture. The cylindrical feed guide contains a higher order hybrid mode suppressor which maintains a substantially uniform radiation pattern over the operating band with an acceptable insertion loss.

US Patent:

46739483, Jun 16, 1987

Filed:

Dec 2, 1985

Appl. No.:

6/803699

Inventors:

Samuel C. Kuo - Saratoga CA

Assignee:

GTE Government Systems Corporation - Mountain View CA

International Classification:

H01Q 1110

US Classification:

3437925

Abstract:

A foreshortened log periodic antenna includes variously configured dipole elements which are arranged in four regions along the axis of the array. The first region includes a series of solid, triangular dipoles characterized by substantially constant base/height ratios. The second region similarly includes a series of solid, triangular dipoles. However, these elements are characterized by decreasing base/height ratios so as to afford a gradual transition into the third region, which includes a single linear dipole. The fourth region includes a series of solid or hollow rectangular elements connected by respective stems to the antenna feedline. In a manner set forth in U. S. Pat. No. 3,732,572, entitled "Log Periodic Antenna with Foreshortened Dipoles", the rectangular elements effect a reduction in the width of the array without a substantial affect on electrical performance.

US Patent:

42570492, Mar 17, 1981

Filed:

Oct 15, 1979

Appl. No.:

6/084843

Inventors:

Samuel C. Kuo - Saratoga CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01Q 1110

US Classification:

3437925

Abstract:

A log-periodically loaded monopole antenna comprises a plurality of longitudinally log-periodically spaced longitudinally tapering linear radiating elements in a vertical plane, a meander transmission line (meanderline) in a second plane perpendicular to the vertical plane and extending longitudinally on opposite sides of the plane of the elements and intersecting successive elements at the cross-over points, and a straight transmission line or shunt in the second plane interconnecting the junctions of the elements and the meanderline. The addition of this shunt substantially eliminates the large gain drop-out characteristic of this antenna, the voltage standing wave ratio being reduced from an average of 6:1 to less than 1. 6:1. In one embodiment the elements are pivotally connected to the transmission line for pivoting in the vertical plane to permit collapsing of the elements toward the plane of the transmission line when required due to space limitations.

US Patent:

42862710, Aug 25, 1981

Filed:

Feb 26, 1979

Appl. No.:

6/015493

Inventors:

Normand Barbano - Sunnyvale CA
Samuel C. Kuo - Saratoga CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01A 1110

US Classification:

3437925

Abstract:

A vertically-polarized log-periodic monopole antenna comprises two closely spaced arrays of elements over a ground plane and connected to a balanced feed source, i. e, the arrays are separately excited out of phase by the source. The elements of each array taper from minimum dimensions at the feed end to maximum at the other end in progressive increments of a predetermined ratio. tau. and are open at their inner ends proximate to the ground plane. Each array preferably comprises an electrically continuous wire-like conductor configured to define the profile of the elements and to constitute the interelement connecting lines. Preferred shapes of the elements are trapezoidal, pseudo-trapezoidal and triangular. The antenna provides very broadband (20 to 750 MHz) frequency independent performance at minimum VSWR (