Magdy F Iskander, 77152 Polihale Pl, Honolulu, HI 96825

6583394, Jun 24, 2003

Dec 21, 2001

10/034488

Carlos R. Araya - Woodhull NY
Magdy F. Iskander - Salt Lake City UT
Elizabeth M. Vileno - Corning NY

Corning Incorporated - Corning NY

H05B 670

219685, 219691

Apparatus and a method for processing a ceramic material includes placing the ceramic material in a microwave heating apparatus having a microwave cavity; subjecting the ceramic material to a combination of microwave radiation and conventional heat; and controlling the uniformity of the processing of the ceramic material so as to avoid deformations and cracking by applying the microwave radiation to the ceramic material through at least one branched slotted waveguide which substantially uniformly distributes the microwave radiation throughout the microwave cavity.

7079082, Jul 18, 2006

Mar 21, 2005

11/087116

Magdy F. Iskander - Honolulu HI, US
Wayne C. Kim - Mililani HI, US
Jodie M. Bell - Honolulu HI, US

University of Hawaii - Honolulu HI

H01Q 13/00
H01Q 3/00

343772, 343762

An improved continuous transverse stub (CTS) antenna has coplanar waveguide (CPW) feed elements spaced apart aligned in parallel and mounted perpendicular to a planar substrate base made of a low dielectric material. A continuous transverse stub extends perpendicularly through a clearance gap in the CPW feed elements on the ground plane of the substrate base. The antenna is fed with a simple coplanar waveguide transmission line formed by the parallel CPW elements. The antenna employs the coplanar waveguide with CTS technology, preferably in a planar microstrip configuration, to produce a broadside radiation pattern with a maximum in the +z direction, perpendicular to the plane of the antenna. The CPW-CTS antenna offers the advantages of a broadside radiation pattern, low input impedance, high radiation efficiency, low fabrication cost, use of simple coaxial or microstrip transmission line feed, and simple integration with microstrip circuitry in a transceiver front-end. The CPW-CTS antenna may be integrated in a single frequency band or in multiband arrays and could provide radiation beam steering capability when integrated with a substrate of tunable dielectric material such as BSTO.

7417587, Aug 26, 2008

Jan 19, 2006

11/335802

Magdy F. Iskander - Honolulu HI, US
Rory K. Sorensen - Salt Lake City UT, US
Jar J. Lee - Irvine CA, US
Hee Kyung Kim - El Segundo CA, US

Raytheon Company - Waltham MA

H01Q 3/36
H01P 1/19

342375, 333161

A phase shifter comprises a substrate, a ground plane formed on a first surface of the substrate, a support structure positioned on a second surface of the substrate opposite the first surface, three parallel, non-co-planar microstrip lines supported by the support structure above the second surface of the substrate, a ferrite element supported by the support structure between the second surface of the substrate and the three non-co-planar microstrip lines, and means for applying a magnetic field to the ferrite element.

8461851, Jun 11, 2013

Apr 9, 2010

12/757859

Magdy F. Iskander - Honolulu HI, US
Hyoungsun Youn - Honolulu HI, US
Charles Amazeen - Arlington VA, US
Brian Burns - Alexandria VA, US

University of Hawaii - Honolulu HI

G01R 27/04

324637, 324642, 324639

A slotted TEM transmission line and an in-situ TEM transmission line are utilized to determine both complex permittivity and permeability of soil. The permittivity and permeability information may be used by underground sensing techniques such as GPR and EMI to enhance information from these techniques. The in-situ probe provides that both complex permittivity and permeability can be measured simultaneously over a broad frequency range without disturbing the soil conditions.

4396062, Aug 2, 1983

Oct 6, 1980

6/194153

Magdy F. Iskander - Salt Lake City UT

University of Utah Research Foundation - Salt Lake City UT

E21B 4324
E21B 4900
G01R 2702

166248

A novel apparatus and method for time-domain tracking of high-speed chemical reactions. The apparatus of this invention includes a feedback system for controlling the RF frequency of an RF radiator system to thereby provide the optimum RF frequency for heating the reaction. The apparatus and method of this invention are particularly useful in the recovery of products from oil shale wherein the oil shale is heated by RF dielectric heating and the feedback system adjusts the RF frequency as the permittivity of the oil shale changes during the heating process.

6201509, Mar 13, 2001

Nov 5, 1999

9/434886

Zhijun Zhang - Salt Lake City UT
Magdy F. Iskander - Salt Lake City UT
Zhengqing Yun - Salt Lake City UT

University of Utah Research Foundation - Salt Lake City UT

H01Q 904
H01Q 112

343791

A continuous transverse stub element array structure which forms a coaxial geometry formed from a plurality of cylindrical segments, wherein each of the cylindrical segments has a rim at a top end and a bottom end, wherein each rim extends transversely away from the cylindrical segment relative to a longitudinal axis thereof to thereby form a stub element, wherein the individual cylindrical transverse stub elements are aligned end-to-end to thereby form a coaxial cable structure which surrounds a central core material. The series of these stubs form reactive or radiating elements for microwave, millimeter-wave, and quasi-optical filters and antennas. Purely reactive elements are formed by leaving the conductive coating on the terminus of the stub elements, whereas radiating elements are formed when stub elements of moderate radius are opened to free space. For tunability, each of the plurality of cylindrical segments and the central axis materials are coated with a conductive material which is ferro-electrical or liquid crystal in nature. The individual stub elements are separated from each other by air gaps or an appropriate material.

4240445, Dec 23, 1980

Oct 23, 1978

5/954054

Magdy F. Iskander - Midvale UT
Carl H. Durney - Salt Lake City UT

University of Utah - Salt Lake City UT

A61N 140

128804

An apparatus and method for coupling electromagnetic energy into a dielectric material such as tissue while substantially reducing external leakage of the energy. The apparatus may also be used as a receiver for electromagnetic energy transmitted through tissue. The apparatus includes an open transmission line which is inherently non-radiating and may be configurated with a centrally disposed, central strip conductor. A ground plane conductor is placed in spaced relationship to the central strip conductor and on both sides of the central strip conductor. Alternatively, the central strip conductor may be placed in spaced relationship to one side of a ground plane conductor. The central strip conductor is terminated with a resistor of resistance equal to the characteristic impedance of the open transmission line. The spacing and electrical geometry of each of the central strip conductor, ground plane conductor, electrical interconnection points, and the resistor are each selectively predetermined to minimize spurious radiation during coupling of the transmission apparatus. The method includes minimizing external leakage of electromagnetic energy while coupling electromagnetic energy with tissue using the apparatus of this invention.

4510437, Apr 9, 1985

Jul 29, 1983

6/518532

Magdy F. Iskander - Salt Lake City UT

University of Utah - Salt Lake City UT

G01R 2726

324 61R

A novel apparatus and method for time-domain tracking of high-speed chemical reactions. The apparatus of the present invention includes an RF heating system for heating a reaction zone and a probe system in the reaction zone for measuring the complex permittivity in the reaction volume. A feedback system controls the RF source by adjusting the frequency of the RF source as a function of the relaxation frequency as determined by the permittivity measured by the probe system. Advantageously, the novel apparatus and method of this invention is particularly useful for RF dielectric heating to recover products from oil shales since it was found that the optimum RF frequency for heating oil shale changes rapidly as the kerogen is heated to elevated temperatures.