Gary Kevin Montress

8610517, Dec 17, 2013

Nov 2, 2010

12/917738

Roger L. Clark - Windham NH, US
Seth A. Berman - Marblehead MA, US
Robert E. Kozlowski - Concord MA, US
Gary K. Montress - Westford MA, US

Raytheon Company - Waltham MA

H03H 9/05
H03H 9/205
H03H 9/25
H03B 5/32

333193, 333195, 310313 B, 331107 A

A device, comprising a substrate having opposing first and second surfaces, a first surface acoustic wave resonator disposed on the first surface of the substrate, a second surface acoustic wave resonator disposed on the second surface of the substrate, a first adhesive layer sandwiched between the first surface acoustic wave resonator and the substrate, and a second adhesive layer sandwiched between the second surface acoustic wave resonator.

48719846, Oct 3, 1989

Jun 24, 1988

7/210907

Richard W. Laton - Lexington MA
Charles E. Chase - Needham MA
Gary K. Montress - Westford MA

Raytheon Company - Lexington MA

H03B 512

331107A

A microwave surface acoustic wave resonator stabilized oscillator includes an amplifier having an input terminal and an output terminal and a feedback circuit disposed around said amplifier for providing a closed loop about said amplifier having an integral multiple of 2. pi. radians of phase shift and excess small signal gain at a frequency f. sub. o. The SAW resonator is disposed in the feedback means and is selected to operate in a fundamental mode of operation and provides a resonant circuit having a resonant frequency f. sub. o. The feedback circuit around the amplifier causes the loop to oscillate at a frequency at which the phase shift is an integral multiple of 2. pi. radians and which has excess small signal gain. As the circuit starts to oscillate, the overall gain in the loop is compressed and the loop amplifier is forced to operate in a non-linear region. Operation in non-linear region causes the amplifier to generate harmonics of the fundamental frequency and thus, by providing a circuit which extracts the harmonics of the fundamental frequency, rather than the fundamental frequency itself, the frequency range of the amplifier can be extended.

51266946, Jun 30, 1992

Jul 11, 1991

7/728664

Gary K. Montress - Westford MA
Mark E. Russell - Londonderry NH

Raytheon Company - Lexington MA

H03L 706
H03L 7085
H03L 7099

331 18

A SAW stabilized oscillator includes a phase locking circuit which is phase locked to a lower frequency reference signal having an odd order difference with respect to the fundamental frequency of the SAW oscillator. A mixer is disposed in the phase locking circuitry and is used as a sub-harmonic phase detector by mixing the fundamental with an odd harmonic of the reference signal.

50399578, Aug 13, 1991

May 7, 1990

7/520012

James A. Greer - Andover MA
Thomas E. Parker - Framingham MA
Gary K. Montress - Westford MA

Raytheon Company - Lexington MA

H01L 4104
H03B 532
H03H 9145

331107A

A surface acoustic wave device having interdigitated transducers comprised of an improved metalization system including copper and titanium doped aluminum transducers. A method of producing the interdigitated transducers includes deposition of the metals on a quartz substrate and subsequent heat treatment. The metalization system provides SAW devices having improved long-term frequency stability, particularly when operated at high power levels. The surface acoustic wave device may be incorporated in a feedback loop of an amplifier to form an oscillator circuit.