scispace - formally typeset
Search or ask a question
Author

Larry Allan Moore

Bio: Larry Allan Moore is an academic researcher from Motorola. The author has contributed to research in topics: Surface acoustic wave & Surface acoustic wave sensor. The author has an hindex of 2, co-authored 3 publications receiving 21 citations.

Papers
More filters
Patent
02 Jul 1974
TL;DR: In this article, a surface acoustic wave (SAW) structure is disclosed wherein a SAW device is incorporated as an exterior lamina within a composite laminate in order to temperature stabilize the acoustic device.
Abstract: A surface acoustic wave (SAW) structure is disclosed wherein a SAW device is incorporated as an exterior lamina within a composite laminate in order to temperature stabilize the acoustic device. The composite laminate is synthesized to selectively mismatch the thermal expansion characteristics of the piezoelectric material, which is the body of the acoustic device, along the axis of acoustic propagation and simultaneously approximately match the thermal expansion properties along the orthogonal axis. Compressive force is thereby applied to the acoustic device to keep the substrate length constant and thus provide an approximately zero temperature coefficient over a preferred range of temperatures.

16 citations

Patent
08 Aug 1983
TL;DR: In this paper, a composite antenna element formed of a plurality of high modulus, high strength, low density, unidirectional graphite fibers bonded together by a flexible matrix material was formed into a tapered rod.
Abstract: A composite antenna element formed of a plurality of high modulus, high strength, low density, unidirectional graphite fibers bonded together by a flexible matrix material and formed into a tapered rod. The element is stored in a coiled configuration within a groove on the device to which it is attached and uses the strain energy stored within it during coiling to uncoil itself upon release into a vertical cantilever column on the order of eight feet high.

4 citations


Cited by
More filters
Patent
05 Sep 2012
TL;DR: In this article, the authors define a duplexer as a single-input-multiple-output (SIMO)-duplication (D2DM) system with at least two IDTs (Interdigital Transducers).
Abstract: A duplexer includes: a transmit filter that is connected between an antenna terminal and a transmit terminal and has a plurality of acoustic wave resonators; a receive filter that is connected between the antenna terminal and a receive terminal and has a plurality of acoustic wave resonators; and a delay line or a longitudinal coupling type resonator that is connected in parallel with at least one of the plurality of acoustic wave resonators of the transmit filter and the plurality of acoustic wave resonators of the receive filter and has at least two IDTs (Interdigital Transducers).

56 citations

Patent
29 May 1998
TL;DR: In this article, a surface acoustic wave device has a main substrate, a comb-like electrode formed on one of the main surfaces of said main substrate; and a supplementary substrate joined with the other main surface of the substrate, wherein said supplementary substrate has a smaller thermal expansion coefficient and a larger thickness than the main substrate.
Abstract: A surface acoustic wave device has a main substrate; a comb-like electrode formed on one of the main surfaces of said main substrate; and a supplementary substrate joined with the other main surface of said main substrate, wherein said supplementary substrate has a smaller thermal expansion coefficient and a larger thickness than said main substrate.

49 citations

Patent
11 Dec 1991
TL;DR: In this article, a pultruded composite member made of a plurality of small generally circular cross-section conductive fibers in a polymer matrix, the fibers being oriented in the matrix in a direction substantially parallel to the axial direction of the PULSE member, and being continuous from one end of the member to the other to provide an electrical point contacts at each end of a member.
Abstract: An electronic device for conducting electric current has two contacting components at least one of which is a nonmetallic electronic contact in the form of a pultruded composite member made of a plurality of small generally circular cross section conductive fibers in a polymer matrix, the fibers being oriented in the matrix in a direction substantially parallel to the axial direction of the pultruded composite member and being continuous from one end of the member to the other to provide a plurality of electrical point contacts at each end of the member.

41 citations

Patent
16 Mar 1976
TL;DR: In this paper, a multi-layered substrate for a surface-acoustic-wave device which substrate comprises a piezoelectric layer on a base, the temperature coefficient of a phase velocity of the SAW in the layer being different from that of the base, was presented.
Abstract: This invention provides a multi-layered substrate for a surface-acoustic-wave device which substrate comprises a piezoelectric layer on a base, the temperature coefficient of a phase velocity of the surface-acoustic-wave in the piezoelectric layer being different from that of the base, the piezoelectric layer having a thickness less than a wavelength of the SAW. This multi-layered substrate can have a large electromechanical coupling and controlled temperature coefficient of the phase velocity.

38 citations

Patent
06 Jun 2000
TL;DR: In this paper, a surface acoustic wave element includes a laminated substrate where a first substrate made of a piezoelectric material is laminated over a second substrate made from a material different from that of the first substrate, and at least one pair of comb-shaped electrodes formed on one main plane of the substrate.
Abstract: A surface acoustic wave element includes a laminated substrate where a first substrate made of a piezoelectric material is laminated over a second substrate made of a material different from that of the first substrate, and at least one pair of comb-shaped electrodes formed on one main plane of the first substrate. A step or a notch is formed on the periphery of the laminated substrate on the side of the first substrate.

34 citations