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7606294 Channel quality estimation method and receiving apparatus  
Channel quality can be detected accurately in a wireless transmission system such as an HSDPA method. In the case of estimating a channel quality of a signal transmitted by a Code Division...
7595546 Printed circuit board  
Impedance mismatching points such as a VIA and a connector on a differential line between a differential driver element and a differential receiver element are arranged in predetermined positions....
7469017 Multimodulation transmitter  
The present invention discloses a double TRU (Transceiver Unit) ( 45 ). The output signals from the power amplifiers ( 64, 84 ) are combined to one common output signal provided to an antenna...
7372897 Portable information communication terminal, program, and recording medium  
The number of times for averaging operation for averaging a correlation value of a received signal and a reference signal is properly controlled. When the correlation value is not averaged, since a...
7352800 Method of partial parallel interference cancellation  
A method of Partial Parallel Interference Cancellation (PPIC) is provided for recursively eliminating the Multiple Access Interference from a received signal. Such method is to use a recursion way...
7053524 Surface acoustic wave sensor or identification device with biosensing capability  
A surface acoustic wave sensor or identification device has a piezoelectric material, and an interdigitated transducer (IDT) input/output mounted on the piezoelectric material for receiving a radio...
6967428 Selectable reflector arrays for SAW sensors and identification devices  
A surface acoustic wave sensor or identification device has a piezoelectric substrate, an interdigitated transducer (IDT) input/output mounted on a substrate for receiving a radio frequency (RF)...
6815867 Substrate usable for an acoustic surface wave device, a method for fabricating the same substrate and an acoustic surface wave device having the same substrate  
A base material made of C-faced sapphire single crystal is set on a susceptor installed in a reactor arranged horizontally. Then, a trimethyl-aluminum and an ammonia are introduced as raw material...
6683515 Surface-acoustic-wave filter providing outputs with different delay times and communications unit  
A surface-acoustic-wave filter has a piezoelectric substrate; and a plurality of transversal surface-acoustic-wave (SAW) filters set on the piezoelectric substrate and respectively having at least...
6545567 Programmable analog tapped delay line filter having cascaded differential delay cells  
Method and system for a programmable analog tapped delay line filter are disclosed. One embodiment of the present invention is a programmable analog tapped delay line filter comprising an input...
6229409 Surface acoustic wave matched filter  
An output side electrode of a surface acoustic wave matched filter with portions having different delay times between taps. The output side electrode may be provided by arranging parallelly a...
6075898 Reflective array compressor  
A reflective array compressor for a fast pattern recognition system. The system includes a combination of digital and analog processing circuitry which allows the system to achieve super computing...
6025762 Delay line incorporating a surface acoustic wave ladder filter and method of providing same  
A method (100) of providing a time delay to a signal utilizing a surface acoustic wave ladder filter includes a first step (102) of providing a piezoelectric substrate. A second step (104) includes...
5841214 Identification mark operating with acoustic surface waves  
An identification mark operating with acoustical surface waves includes at least one reflector having higher reflectivity than a reflectivity of other reflectors.
5691698 Identification and/or sensor system  
An identification and/or sensor system includes an identification and/or sensor configuration having resonators for determining at least one parameter to be interrogated. The resonators have a...
5530410 Acoustic frequency mixing devices using potassium titanyl phosphate and its analogs  
Acoustic frequency mixing devices for controlling high frequency signals by the generation of acoustic waves are disclosed. The devices include (a) a crystalline substrate of MTiOXO 4 (wherein M...
5519365 Waveguide for an acoustic charge transport device  
A waveguide for surface acoustic waves comprises a substrate for supporting propagation of surface acoustic waves along a direction at a substrate velocity and a dielectric structure disposed above...
5353304 Surface acoustic wave device, and demodulating apparatus and communication system using the surface acoustic wave device  
In a surface acoustic wave device, there are arranged a piezoelectric substrate, an input electrode and an output electrode. The input electrode is formed on the substrate, and generates a surface...
5319326 Surface-wave-type reflective delay line  
A surface-wave-type reflective delay line includes an input/output interdigital converter, and a plurality of surface wave reflectors. The surface wave reflectors are disposed at positions...
5274345 Dual function reflector structures for interdigital saw transducer  
A SAW reflector structure located between multiple interdigitated generator/receivers located on a piezo-electric substrate forming a ladder type SAW device is described. The reflector structure...
5189393 Dual technology motion sensor  
A dual technology sensor which uses both ultrasonic and infrared sensors is disclosed. The electronic circuit of the invention requires detection by both sensors to activate the load. Thus, false...
5179309 Surface acoustic wave chirp filter  
A surface acoustic wave (SAW) chirp signal processor having a piezoelectric substrate, an array of input transducers and an array of output transducers. In its chirp compression mode, the device...
5138215 Saw reflective array correlator with amplitude error compensating polymer reflective array grating  
Amplitude error compensation is provided for a surface acoustic wave (SAW) reflective array correlator (RAC) device having a first reflective array grating fed by an input interdigital transducer...
5130597 Amplitude error compensated saw reflective array correlator  
An amplitude error compensated surface acoustic wave reflective array corator is provided having an input interdigital transducer feeding a first slanted reflective array grating, a second slanted...
5126706 Surface wave arrangement with conversion structure for preventing undesirable reflected waves  
A surface device with a conversion structure (12) mounted on the substrate (2) but outside the surface of the substrate provided for surface wave propagation. The conversion structure eliminates...
5113115 Saw slanted array correlator with amplitude error compensating polymer reflective array grating  
Amplitude error compensation is provided for a surface acoustic wave (SAW) lanted array correlator (SAC) device having an input interdigital dispersive slanted array transducer feeding a plurality...
5111168 Real-time, in-situ saw filter delay adjustment  
A method of adjusting the center frequency of a SAW device by providing a substrate capable of propagating a surface acoustic wave thereon having input transducer electrode on one end portion...
5084687 Surface acoustic wave encoder/decoder  
A unitary surface acoustic wave device for continuous quadraphase coding of a high amplitude video impulse with provisions for controlling the rise and fall times of such impulse.
5043620 Surface acoustic wave convolver and convolution integrator using same  
In an SAW convolver composed of a substrate having a multi-layered structure comprising at least a piezoelectric film, self convolution is suppressed by disposing a first and a second array...
5010270 Saw device  
Techniques for adjusting the surface acoustic wave velocity of a packaged SAW device are described. A first technique involves depositing a film from a cover of the device onto a surface wave...
4973875 Surface elastic wave device  
A surface elastic wave filter for processing a supplied signal into a signal with nonlinear-phase frequency characteristics has a piezoelectric substrate for propagating a surface elastic wave...
4965479 Surface transverse wave resonator  
A surface transverse wave resonator comprises a piezoelectric substrate having at least one surface, wherein said substrate includes a crystalline structure that permits the propagation of...
4952833 High density surface acoustic waveguide channelizer  
A surface acoustic wave device is disclosed which performs frequency channelization in a relatively small volume. The invention utilizes a wide band incline step frequency transducer each step...
4943751 Surface acoustic wave element  
In a surface acoustic wave element comprising a semiconductor substrate, a piezoelectric layer formed thereon and at least one interdigital electrode disposed on the surface thereof, a...
4933588 Higher order transverse mode suppression in surface acoustic wave resonators  
A technique for adjusting the frequency of odd mode transverse waves propagating in a SAW device is described. A pair of localized regions of frequency determining trimming material are deposited...
4878036 Surface elastic wave filter  
A surface elastic wave filter has a pair of electrodes on a surface of a piezoelectric body, and at least one of the electrodes is constructed as electrode fingers in the form of comb teeth which...
4837476 Surface acoustic wave resonator having transducers and reflectors of different periods  
A surface acoustic wave resonator comprising at least two interdigital electro-acoustic transducers found between two sets of reflective gratings on a crystalline substrate. The period of the...
4825212 Arrangement for use with a touch control system having a spherically curved touch surface  
A touch control system for a cathode ray tube, or other touch-controlled device capable of recognizing touch positions along a predetermined coordinate axis on a three-dimensionally curved touch...
4803448 Cantilever mount of a substrate lamina of a surface wave device  
A cantilever mount for a substrate lamina of a surface wave device wherein the substrate lamina 42 of the component is attached only at its one end 45 and is a wedge-shaped structure. The tapered...
RE32859 Acoustic surface wave devices  
Acoustic surface wave devices of a novel class characterized by the provision of coupling means comprising at least several spaced filamentary electrical conductors extending over a first region...
4757283 Technique for frequency trimming of a saw device using dielectric layers disposed between a pair of transducers of the saw device  
A surface acoustic wave device includes a substrate which supports surface acoustic wave propagation having a predetermined surface acoustic wave velocity characteristic and a pair of...
4749971 Saw delay line with multiple reflective taps  
A delay line with multiple taps is provided in which a hyperbolically tapered input transducer directs a wave to a plurality of hyperbolically tapered partial reflectors. A plurality of...
4748364 Surface acoustic wave device  
A surface acoustic wave device includes a semiconductor substrate, a piezoelectric film disposed on the semiconductor substrate, at least one pair of comb-shaped electrodes constituting an input...
4746914 Cathode ray tube for use in a touch panel display system  
A cathode ray tube for use in a touch panel system that is capable of recognizing touch positions along a coordinate axis of a touch display surface of the system has a flat glass faceplate capable...
4746830 Electronic surveillance and identification  
An electronic article surveillance and identification system employing a transceiver (10,11) for broadcasting an interrogation signal into a zone to track the location and movement therein of...
4745321 Reflective array surface acoustic wave device  
A reflective array surface acoustic wave signal compressor or expander (RAC) has a piezoelectric substrate (LiNbO 3 ) upon which is deposited an input transducer and an output transducer and etched...
4737743 Single mode waveguide saw dispersive filter  
A single mode waveguide dispersive surface acoustic wave (SAW) delay line is formed by aligning an elongated input transducer, which has a pattern of interdigital electrode fingers which launches a...
4727275 Acoustic surface wave device  
A surface acoustic wave device in which the two ports of an input transducer (2) provided on a piezoelectric substrate (1) are coupled to the two ports of an output transducer (3) via respective...
4689586 Surface elastic wave device  
A surface acoustic wave (SAW) device comprises a piezo-electric surface acoustic substrate, and plural sets of input/output interdigital electrodes disposed on the substrate. A phase shifter is...
4663554 Surface acoustic wave device  
In a surface acoustic wave device including launching and receiving transducers (2, 3) and a reflective multistrip coupler (4), the inner boundaries of the input and output electrode arrays (5, 6)...
Matches 1 - 50 out of 135 1 2 3 >