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| Number | Title | Issue Date |
| 8179208 | Interconnect for surfing circuits An interconnect for surfing circuits is presented. The interconnect includes at least one control signal line, at least one data signal line, and at least one variable capacitor coupled to the at least one control signal line and the at least one data signal line, w... | 05/15/2012 |
| 7764142 | Series connected bit phase shifter having first and second impedance adjusting circuits A bit phase shifter includes a plurality of phase shifters having phase shift amounts and connected in series through connection paths; and a first adjusting circuit provided in the connection path between every adjacent two of the plurality of phase shifters. The f... | 07/27/2010 |
| 7724107 | Phase shifter having switchable signal paths where one signal path includes no shunt capacitor and inductor A phase shifter includes a first signal path in which a first unit is disposed to advance a phase of a signal; a second signal path in which a second unit with no shunt capacitor is disposed to change the phase of the signal such that the changed phase is delayed th... | 05/25/2010 |
| 7719386 | Phase shifter having components which suppress fluctuations in the phase shifter pass characteristics A phase shifter selectively switches between a low-pass filter 13 and a high-pass filter 12 using single pole double throw switches 10a and 10b provided on the input and output sides, respectively, and operatively linked to ... | 05/18/2010 |
| 7714681 | Reconfigurable phase-shifter A phase shifter device having two bandwidth modes arranged for altering the electrical length of a signal path between at least two different values, which device is adapted for guiding a signal through at least one of at least a first signal path having a first pha... | 05/11/2010 |
| 7456706 | Method and apparatus for electrically adjusting delay in radio-frequency systems An apparatus and method for providing an electrically adjustable RF delay in which a splitter splits an input signal into two signal paths, one signal path providing a delay fixed at an integral number of wavelengths of a desired center frequency and both signal pat... | 11/25/2008 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7358834 | Transmission line voltage controlled nonlinear signal processors Waveguide nonlinear signal processors include transmission lines defined on a substrate. A plurality of varactors or pairs of varactors are situated along the transmission line and are in communication with a signal conductor of the transmission line and one or more... | 04/15/2008 |
| 7355492 | Electronically controlled hybrid digital and analog phase shifter The inventions presented herein provide a electronically controlled phase shifters that incorporate analog and digital phase shift architectures in a novel manner that realizes the best advantages of each architecture. This combination of complementary phase shift a... | 04/08/2008 |
| 7352189 | Time aligned bussed triggering using synchronized time-stamps and programmable delays Techniques for triggering that provide time-aligned triggering of a set of components using a bussed topology. Triggering according to the present teachings includes a set of components that each include circuitry for measuring a propagation delay on a trigger bus o... | 04/01/2008 |
| 7342534 | Phased array radio frequency pulse generator A phased array radio frequency pulse generator includes a plurality of radio frequency pulse generator units (4, 4a, 4b, 4c) each having a non-linear dispersive electrical circuit (1) incorporating at least one non-li... | 03/11/2008 |
| 7336143 | Variable delay line using variable reactance devices to provide reflected delay signals First and second reactance parts are connected with the first and second output terminals of a hybrid coupler. The first and second reactance parts have a substantially identical reactance X. ... | 02/26/2008 |
| 7333733 | Optoelectronic clock generator producing high frequency optoelectronic pulse trains with variable frequency and variable duty cycle and low jitter An optoelectronic pulse generator is provided that includes a thyristor detector/emitter device having an input port and an output port. The thyristor detector/emitter device is adapted to detect an input optical pulse supplied to the input port and to produce an ou... | 02/19/2008 |
| 7332752 | Optoelectronic circuit employing a heterojunction thyristor device to convert a digital optical signal to a digital electrical signal An optoelectronic circuit includes a resonant cavity formed on a substrate and into which is injected an input digital optical signal that encodes bits of information (each bit representing an OFF logic level or an ON logic level). A heterojunction thyristor device,... | 02/19/2008 |
| 7333790 | Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains A radio frequency (RF) phase shifter having an RC-CR circuit that includes a first capacitor having a first capacitor node and a second capacitor node and a first resistor coupled between the first capacitor node and a ground. The RC-CR circuit also includes a secon... | 02/19/2008 |
| 7315225 | Phase shifter providing multiple selectable phase shift states A single-structure, two-bit phase shifter useful for steering the beam of an antenna such as an aeronautical antenna. The phase shifter includes an input line, an output line, a plurality of switched lines such as quarter-wavelength microstrip lines connected direct... | 01/01/2008 |
| 7310038 | Electromechanical device for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 12/18/2007 |
| 7286036 | Method for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 10/23/2007 |
| 7283018 | Variable matching circuit, variable resonance circuit, variable phase-shifting circuit and variable attenuation circuit each having variable-capacitance capacitor In a variable matching circuit including an impedance device and a variable-capacitance capacitor, the variable-capacitance capacitor is formed in a manner that a plurality of variable-capacitance devices using thin film dielectric layers whose dielectric constants ... | 10/16/2007 |
| 7276993 | Analog phase shifter using cascaded voltage tunable capacitor A circuit topology is configured to flatten out a phase- and amplitude-response over a specified range of frequencies. The circuit topology also provides a large cumulative phase-shift. In one embodiment, the circuit topology cascades a plurality of all-pass section... | 10/02/2007 |
| 7271692 | Slider for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 09/18/2007 |
| 7263330 | Validation of the presence of an electromagnetic transponder in the field of a phase demodulation reader A terminal for generating an electromagnetic field adapted to communicating with at least one transponder, and a method for controlling such a terminal including: an oscillating circuit adapted to being excited by a remote supply signal of the transponder; a phase d... | 08/28/2007 |
| 7247892 | Imaging array utilizing thyristor-based pixel elements An improved imaging array (and corresponding method of operation) includes a plurality of heterojunction thyristor-based pixel elements disposed within resonant cavities formed on a substrate. Each thyristor-based pixel element includes complementary n-type and p-ty... | 07/24/2007 |
| 7239218 | Phase shifter having switchable high pass filter and low pass filter paths and impedance adjustment circuits A phase shifter with a low insertion loss in which impedance mismatch at a point in rear of a high-pass filter or a low-pass filter in the signal flow direction is reduced and difference in insertion loss or phase shifting error across a high-pass filter- low-pass f... | 07/03/2007 |
| 7199665 | Single to dual non-overlapping converter A converter includes an input circuit to receive a single-ended input signal to generate a number of control signals. The control signals have a delay different from one another relative to the single-ended input signal. The converter also includes a first output ci... | 04/03/2007 |
| 7164285 | Directional power detection by quadrature sampling Power measurement and control in transmission systems are affected by changes in load conditions. A method and system are provided for detecting and controlling power levels independent of such load conditions. ... | 01/16/2007 |
| 7164329 | Tunable phase shifer with a control signal generator responsive to DC offset in a mixed signal The present invention provides a phase shifting filter and a phase compensating direct downconversion receiver. A DC offset detector detects a DC offset in a received baseband signal and provides a feedback signal. A tunable filter phase shifts a local oscillator si... | 01/16/2007 |
| 7154440 | Phase array antenna using a constant-gain phase shifter A constant-gain phase shifter is provided, comprising a first tank circuit with a first node to accept an input signal, a first inductor connected between the first node and a reference voltage, and a first capacitor connected in parallel with the first inductor. Th... | 12/26/2006 |
| 7132872 | Apparatus and method for generating a phase delay An apparatus for generating a phase delay is disclosed. The apparatus includes a buffer utilized for buffering an input signal and then outputting an output signal; a digital to analog converter (DAC) utilized for converting a digital value representative of phase d... | 11/07/2006 |
| 7126442 | Phase shifter A phase shifter comprises: a phase shift unit including a reactance unit having a first variable capacitance device, and a susceptance unit having a second variable capacitance device, T-connected to the reactance unit; and a control unit for outputting a control si... | 10/24/2006 |
| 7123116 | Phase shifter and multibit phase shifter A phase shifter includes an FET 2a having its drain electrode connected to an input/output terminal 1a; and FET 2b having its drain electrode connected to the source electrode of the FET 2a and its source elect... | 10/17/2006 |
| 7123676 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 10/17/2006 |
| 7062357 | Multiple region convolver with tapering A multiple region convolver includes tapering between successive models of a physical system. The tapering is performed during a transition period. ... | 06/13/2006 |
| 7057474 | Adjustable delay transmission lines A transmission line includes a signal conductor and at least one varactor diode capacitively coupled to the signal conductor. The transmission line's signal path delay is a function of its shunt capacitance, and the varactor's capacitance forms a part of the transmi... | 06/06/2006 |
| 7053732 | Multi-bit time delay adjuster unit for high RF applications and method A multi-bit time-delay adjuster with Radio Frequency (RF) MicroElectroMechanical (MEM) switches may be used in MultiCarrier Power Amplifiers (MCPAs) with a feed-forward linearization technique. The multi-bit time-delay adjuster makes it possible to automatically con... | 05/30/2006 |
| 7050388 | Method and system for crosstalk cancellation Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can co... | 05/23/2006 |
| 7049907 | System and method for adjusting group delay A group delay adjusting circuit. The group delay adjusting circuit comprises an electronically adjustable variable capacitance, and an electronically variable virtual inductor coupled in parallel to the electronically variable capacitance at a node. ... | 05/23/2006 |
| 7034631 | Symmetric microwave filter and microwave integrated circuit merging the same A microwave filter is disposed on a substrate. The microwave filter is adapted for connecting a first microwave transmission line to a second microwave transmission line, configured such that a signal propagates from the first to second microwave transmission lines.... | 04/25/2006 |
| 7034619 | Monolithic array amplifier with periodic bias-line bypassing structure and method A bias-line bypassing structure comprises a plurality of bias-line bypass circuits forming a periodic structure at least partially around each of a plurality of amplification units to reduce RF current flow between the amplification units and a grid-bias network. Ea... | 04/25/2006 |
| 7023292 | Polar modulation using amplitude modulated quadrature signals Polar modulators include a phase splitter, a controller, variable current sources, transistor circuits, and a combiner. The phase splitter splits a RF carrier signal into quadrature component signals that are 90 degrees out of phase with each other. The controller g... | 04/04/2006 |
