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7623003 |
Drive method for driving element having capacity impedance, drive device, and imaging device
Three devices such as electric charge-coupled devices are each included in one of three phase impedance circuits composing a 3-phase LC resonance circuit as a device having a capacitive impedance....
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7596699 |
Battery authentication system
An authentication process for authenticating a battery to a cellular telephone includes the step of receiving a challenge from the cellular telephone at the battery over a single wire conductor. In...
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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....
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7594105 |
Multilayer print circuit board
This invention effectively prevents potential fluctuation in the power supply terminal of a semiconductor device, that is, noise from flowing out to a main power supply wiring. A multilayer print...
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7586389 |
Impedance transformation and filter using bulk acoustic wave technology
A system, apparatus and method for providing filtering functionality and impedance transformation within a BAW resonator network are disclosed. In particular, a BAW resonator network is designed to...
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7586384 |
Integrated load impedance sensing for tunable matching networks
An impedance matching system may be used, for example, for impedance matching between a transmitter/receiver front-end and an antenna in a mobile communication device. In a tuneable impedance...
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7579924 |
Dual-frequency matching circuit
The connection topology of input terminals ( 2 ), elements ( 4 a , 4 b , 4 c and 4 d ) and load ( 5 ) is designed similarly to a “seven-segment display” that is often used to display numerals...
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7573352 |
Dual-frequency matching circuit
The connection topology of input terminals ( 2 ), elements ( 4 a , 4 b , 4 c and 4 d ) and load ( 5 ) is designed similarly to a “seven-segment display” that is often used to display numerals...
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7573350 |
Resonator matching network
An input-matching network including an acoustic resonator providing a virtual impedance to match impedance between a first component and second component. As an example, the first component may be...
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7573349 |
Antenna balun
The present antenna system includes a balun for coupling an antenna to a feed line. The balun has at least two transmission line transformers, such that the transmission line transformers are...
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7570130 |
Apparatus and methods for a fixed impedance transformation network for use in connection with a plasma chamber
In certain embodiments, an apparatus for providing a fixed impedance transformation network for driving a plasma chamber includes a pre-match network adapted to couple between an Active RF match...
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7564695 |
Circuit connection structure and printed circuit board
While gradually increasing the widths of signal lines ( 104 a, 104 b, 105 a, 105 b ) of first and second groups of differential signal lines ( 104, 105 ) to suppress attenuation in the lines,...
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7554417 |
Circuit and method for adjusting impedance
An impedance adjusting circuit includes a semiconductor device accommodated in a semiconductor device case which has case pins and having a folded conductive line; an external reference resistor...
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7554334 |
Matching network characterization using variable impedance analysis
Embodiments of a method of calculating the equivalent series resistance of a matching network using variable impedance analysis and matching networks analyzed using the same are provided herein. In...
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7535312 |
Adaptive impedance matching apparatus, system and method with improved dynamic range
An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more...
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7528674 |
Mobile radio apparatus capable of adaptive impedance matching
There is provide a mobile radio apparatus capable of suppressing a mismatching loss, and increasing a transmission/reception sensitivity by means of instantly and adaptively matching the impedance...
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7518466 |
Methods and apparatus for symmetrical and/or concentric radio frequency matching networks
Apparatus and methods are provided that are adapted to match the impedance of an electrical load to an impedance of an electrical signal generator. The invention includes providing a plurality of...
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7515016 |
Reconfiguring impedance matching for high power circuits
A method and an apparatus are provided for impedance matching using an analog circuit. The method comprises providing the analog circuit to substantially match a start impedance to an end impedance...
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7515014 |
Method for determining cable termination resistances in communication networks and a corresponding communication network
The invention relates in general to a method for determining cable termination resistances in communication networks and a corresponding communication network, and is applicable especially to...
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7501914 |
Bias circuit
A bias circuit that supplies bias voltage or bias current to one end of a transmission line includes an inductor that prohibits a high frequency component of a baseband signal transmitted on the...
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7479844 |
Method to improve characteristics of PIN diode switches, attenuators, and limiters by control of nodal signal voltage amplitude
A method to improve characteristics of PIN diode switches, attenuators, and limiters via the control of nodal signal voltages by local impedance control.
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7461188 |
Capacitive multidrop bus compensation
The signal integrity of a high speed heavily loaded multidrop memory bus is often degraded due the numerous impedance mismatches. The impedance mismatches causes the bus to exhibit a nonlinear...
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7453393 |
Coupler with waveguide transition for an antenna in a radar-based level measurement system
A mechanism for coupling a coaxial waveguide to another waveguide. The mechanism includes a lower or matching waveguide and an impedance transformer. A coaxial port couples the coaxial waveguide to...
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7453328 |
Bandwidth high-power T network tuner
A wide bandwidth high-power T network tuner obtains its wide bandwidth operation by connecting a fixed capacitor between the input and ground, with the tuner using large, series connected variable...
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7443264 |
Compact impedance transformation circuit
The present invention relates to an impedance transformation circuit (I 10; 11 a ; 11 b ; 12 ) with a first contact pad ( 51 ) and a second contact pad ( 52 ) being spaced-apart and formed on a...
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7411471 |
High-frequency switch
A high-frequency switch operating in a millimeter wave band that includes a signal path having a λ/4 transmission path, for part of two or more branch signal paths that branch from an input...
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7400164 |
Integrated circuit and method of improving signal integrity
An Integrated Circuits (ICs) comprising a first output stage circuit and a second output stage circuit that share common input terminals and an output terminal of the first and second output stage...
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7395028 |
Switching apparatus and satellite antenna switching apparatus
A satellite antenna switching apparatus has LNB ports to which LNBs are connected, receiver ports to which receivers that exchange signals with the LNBs are connected, cascade ports to which...
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7391285 |
Film acoustically-coupled transformer
One embodiment of the film acoustically-coupled transformer (FACT) includes a decoupled stacked bulk acoustic resonator (DSBAR) having a lower film bulk acoustic resonator (FBAR) an upper FBAR...
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7391281 |
Method for suppressing resonant effect between capacitors connected in parallel
A method for suppressing the resonant effect between capacitors connected in parallel is disclosed. By adjusting the length of the transmission line of the shunt capacitors, the performance of the...
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7388455 |
Film acoustically-coupled transformer with increased common mode rejection
The film acoustically-coupled transformer (FACT) has a first and second decoupled stacked bulk acoustic resonators (DSBARs). Each DSBAR has a lower film bulk acoustic resonator (FBAR), an upper...
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7385465 |
Switchable dual-band filter
A switchable dual-band filter comprises first and second switchable resonators, a coupling structure having two ends respectively connecting the first and the second switchable resonators, an input...
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7385459 |
Broadband DC block impedance matching network
An apparatus in one example has: a substrate having a microstrip line; a capacitor at a predetermined location along the microstrip line, the capacitor producing a discontinuity; and a ground plane...
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7378920 |
Methods and apparatus for a high-frequency output match circuit
An output match circuit is coupled between the terminal of a high-frequency device and a ground terminal. The output match circuit includes an LC shunt and an LC notch serially coupled to the LC...
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7376407 |
System and method for dynamic impedance tuning to minimize return loss
A system for tuning an impedance at a node comprises a first component associated with a first impedance when the first component is operating and a second impedance when the first component is not...
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7369834 |
Impedance-matched IQ network for an image rejection circuit
An impedance-matched IQ network includes a phase shift circuit and a back termination. The phase shift circuit includes an in-phase mixer port for receiving the in-phase signal, a quadrature-phase...
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7369019 |
RF backscatter transmission with zero DC power consumption
A method for minimizing power consumption in a wireless device which utilizes backscatter transmission in half-duplex mode, wherein a switching device is interposed between an antenna and a...
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7351905 |
Apparatus for powering an electronic musical instrument
Apparatus for providing electrical power to signal conditioner circuitry inside a musical instrument having a signal output jack mounted thereon to carry a conditioned music signal via a signal...
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7345555 |
Writing pattern structure of differential transmission paths
A wiring pattern structure having differential transmission paths electrically connects an integrated circuit element and a connector, which are arranged on a printed wiring board. Each of the...
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7339444 |
Methods for providing bias to a monolithic microwave integrated circuit
In general, in accordance with an exemplary aspect of the present invention, a method is provided for providing DC bias to an MMIC power amplifier, the method comprising the steps of: attaching a...
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7332980 |
System and method for a digitally tunable impedance matching network
The present disclosure relates generally to digitally tunable impedance matching networks. In one example, a digitally tunable impedance matching network is configured to produce an overall...
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7294791 |
Circuitized substrate with improved impedance control circuitry, method of making same, electrical assembly and information handling system utilizing same
A circuitized substrate designed to substantially eliminate impedance disruptions during passage of signals through signal lines of the substrate's circuitry. The substrate includes a first...
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7288723 |
Circuit board including isolated signal transmission channels
A circuit board including a signal transmission channel includes a dielectric substrate and a signal transmission channel which may be formed on the dielectric substrate. The signal transmission...
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7286026 |
Serial signal injection using capacitive and transformer couplings for power line communications
A coupling network has a first power line interface port and a power line modem interface configured to be coupled to a power line modem transceiver. An inductor-capacitor circuit coupled to the...
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7265731 |
Method and apparatus for improving the performance of a multi-band antenna in a wireless terminal
A method and apparatus for improving the efficiency of a multi-band antenna in a wireless terminal over a wide range of frequencies is described herein. To compensate for the undesirable coupling...
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7253699 |
RF MEMS switch with integrated impedance matching structure
An impedance matching structure for a RF MEMS switch having at least one closeable RF contact in an RF line, the impedance matching structure comprising a protuberance in the RF line immediately...
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7250827 |
Circuitry module
A circuit assembly includes multiple substrate with a regions of embedded signal processing circuitry can be connected to a region of adjustable signal processing circuitry and a cavity formed...
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7248635 |
Method and apparatus for communicating computer data from one point to another over a communications medium
The present invention is directed toward a communications channel comprising a link level protocol, a driver, a receiver, and a canceller/equalizer. The link level protocol provides logic for...
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7245186 |
Bandpass amplifier
The present invention discloses a bandpass amplifier having gain and bandpass performance. The bandpass amplifier includes an input match unit for matching the gain of the amplifier and having a...
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7239165 |
Pulse transport apparatus, systems, and methods
Apparatus and systems, as well as methods and articles, may operate to transmit an initial pulse to a directional coupler, where the initial pulse has an initial amplitude and a timed overshoot of...
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