MR. CARLOS GONZALEZ, PT.
Physical Therapy at Mountain Ave, Ontario, CA

5312674, May 17, 1994

Jul 31, 1992

7/923409

Carol Haertling - Santa Ana CA
Andrew A. Shapiro - Orange CA
Charles A. Goodman - Garden Grove CA
Ramona G. Pond - Downey CA
Robert D. Washburn - Malibu CA
Robert F. McClanahan - Valencia CA
Carlos H. Gonzalez - La Mirada CA
David M. Lusher - Gardena CA

Hughes Aircraft Company - Los Angeles CA

B32B 900

428210

A ferromagnetic material (18,20) in ink or tape form is sinterable using a same firing profile as and has approximately the same thermal shrinkage characteristics as low-temperature-cofired-ceramic (LTCC) tape, and is chemically non-reactive therewith. The ferromagnetic material (18,20) is applied to the surfaces of LTCC tape sheets (12,14,16) to form desired elements such as cores for inductors (22) and transformers and magnetic shields. Ferromagnetic vertical interconnects (vias) (54) can be formed by punching holes (56) through tape sheets (46) and filling them with ferromagnetic ink. The tape sheets (12,14,16) and ferromagnetic elements (18,20) are laminated together and cofired to form an integral structure (10). Ferromagnetic and non-magnetic components (114) can be fabricated separately and inserted into cavities (104a, 106a,108a) in tape sheets (104,106,108) prior to cofiring. A multi-layer transformer (250) includes primary (254b, 256b,258b,254d,256d,258d) and secondary (254c,256c,258c) coils, each being formed of vertically aligned, arcuate conductors which are printed on separate tape sheets (254,256,258) and vertically interconnected at their ends to form continuous electrical paths therethrough.

5121084, Jun 9, 1992

Mar 29, 1990

7/501649

James A. Anderson - late of Gardena CA
Carlos H. Gonzalez - La Mirada CA
Robert F. McClanahan - Valencia CA
Robert D. Washburn - Malibu CA

Hughes Aircraft Company - Los Angeles CA

H03F 368

330295

A balance circuit for an amplifier circuit having 2. sup. M amplifiers serially biased across a supply potential node and a common potential node, where M is an integer greater than 0, and having respective 2. sup. M -1 interstage bias nodes and voltages between the amplifiers which are driven by respective input drive signals provided by 2. sup. M -1 2-way power splitters. A voltage reference circuit provides as to each power splitter first and second reference potentials respectively associated therewith. A plurality of control circuits are associated with respective power splitters and interstage nodes. Each control circuit is responsive to the associated first and second reference potentials and the interstage bias node for controlling the signal levels of the first and second drive signals provided by the associated 2-way splitter as a function of the associated interstage bias potential relative to the first and second reference potentials.

5532667, Jul 2, 1996

Oct 11, 1995

8/541170

Carol Haertling - Santa Ana CA
Andrew A. Shapiro - Orange CA
Charles A. Goodman - Garden Grove CA
Ramona G. Pond - Downey CA
Robert D. Washburn - Malibu CA
Robert F. McClanahan - Valencia CA
Carlos H. Gonzalez - La Mirada CA
David M. Lusher - Gardena CA

Hughes Aircraft Company - Los Angeles CA

H01F 1704, H01F 2730

336177

A ferromagnetic material (18,20) in ink or tape form is sinterable using a same firing profile as and has approximately the same thermal shrinkage characteristics as low-temperature-cofired-ceramic (LTCC) tape, and is chemically non-reactive therewith. The ferromagnetic material (18,20) is applied to the surfaces of LTCC tape sheets (12,14,16) to form desired elements such as cores for inductors (22) and transformers and magnetic shields. Ferromagnetic vertical interconnects (vias) (54) can be formed by punching holes (56) through tape sheets (46) and filling them with ferromagnetic ink. The tape sheets (12,14,16) and ferromagnetic elements (18,20) are laminated together and cofired to form an integral structure (10). Ferromagnetic and non-magnetic components (114) can be fabricated separately and inserted into cavities (104a,-106a,108a) in tape sheets (104,106,108) prior to cofiring. A multi-layer transformer (250) includes primary (254b,-256b,258b,254d,256d,258d) and secondary (254c,256c,258c) coils, each being formed of vertically aligned, arcuate conductors which are printed on separate tape sheets (254,256,258) and vertically interconnected at their ends to form continuous electrical paths therethrough.

5162963, Nov 10, 1992

Dec 13, 1991

7/807797

Robert D. Washburn - Malibu CA
Jerry C. Sze - San Francisco CA
David M. Lusher - Torrance CA
Carlos H. Gonzalez - La Mirada CA
Robert F. McClanahan - Valencia CA

Hughes Aircraft Company - Los Angeles CA

H02H 904

361 18

A power supply including a source of AC power, a filter including inductive elements, and rectifying circuitry. Where the AC source comprises a sinewave source, the filter includes inductive and capacitive elements; and where the AC source comprises a square wave source, the filter includes only inductive elements.

4980810, Dec 25, 1990

May 25, 1989

7/357400

Robert F. McClanahan - Valencia CA
Robert D. Washburn - Malibu CA
Carlos H. Gonzalez - La Mirada CA
James A. Anderson - late of Gardena CA
by Roger K. Anderson - Sepulveda CA
George Biner - Los Angeles CA
David M. Lusher - Torrance CA
William J. Council - Newbury Park CA
Earl H. Martin - Moorpark CA

Hughes Aircraft Company - Los Angeles CA

H02M 3335

363 16

A DC to DC power supply including an RF driver circuit for providing an RF output drive signal having a frequency greater than about 50 MHz, power amplifier circuitry responsive to the RF output drive signal and a DC voltage supply for providing an amplified AC output, and an impedance transforming circuit such as a balun transformer for transforming the AC amplified output to an impedance transformed AC signal. The transformed AC signal is provided to a rectifying circuit which provides a DC output. A feedback regulation control circuit provides for regulation of the power supply output voltage. The DC to DC power supply is advantageously implemented with printed microstrip or stripline passive components.

4972309, Nov 20, 1990

Mar 14, 1989

7/323531

Jerry C. Sze - San Francisco CA
Carlos H. Gonzalez - La Mirada CA
Robert F. McClanahan - Valencia CA
David M. Lusher - Torrance CA

Hughes Aircraft Company - Los Angeles CA

H02M 7537

363131

A DC to AC sinewave converter having an FET with its gate terminal coupled to a switching signal which turns the FET on and off. A pair of parallel, oppositely conductive diodes couples the drain terminal of the FET to a resonant circuit that is responsive to a source of DC voltage. A clamping diode is connected between the parallel diodes and the source terminal of the FET for preventing the drain and source terminals from being reverse biased.