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7570133 Wideband passive amplitude compensated time delay module  
A true time delay (“TTD”) system with wideband passive amplitude compensation is provided. The TTD system includes an input switch, an output switch, a reference delay line disposed between the...
7561007 Switchable phase shifter for providing selectable phase shift paths  
A switchable phase shifter includes an RF coupler arrangement which simultaneously produces 0° and 180° signals, together with controllable switches which select the desired phase of output...
7541894 Phase-shifting circuit and multibit phase shifter  
A phase-shifting circuit includes: a first parallel circuit which is connected across input and output terminals of a high frequency signal, composed of a first inductor and a first switching...
7535320 Phase shifter with flexible control voltage  
The invention provides a phase shifter with flexible control voltage that is useful with all RF systems that phase shift a RF signal. The phase shifter according to the present invention may...
7498999 Circuit board having a peripheral antenna apparatus with selectable antenna elements and selectable phase shifting  
A circuit board for wireless communications includes communication circuitry for modulating and/or demodulating a radio frequency (RF) signal and an antenna apparatus for transmitting and receiving...
7498903 Digital phase shifter  
Digital phase shifter, comprising series connection of controlled phase shifting bits ( 3 a - 3 k ), each of them inserts determinate amount of phase delay of the passing signal, wherein the phase...
7495529 Phase shift circuit, high frequency switch, and phase shifter  
Provided is a small-size phase shift circuit having a broad band characteristic. The phase shift circuit includes: a first switching element for switching between a through path and a capacitance...
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...
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...
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.
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...
7292124 Variable resonator and variable phase shifter  
A variable resonator is provided which comprises signal conductor 13 formed on top side surface of dielectric substrate 12 , ground conductor layer 11 formed on back side surface thereof and...
7289001 Dielectric substrate for oscillator  
An oscillator includes a phase shifter and a power distributor which are disposed in a dielectric substrate comprising a plurality of stacked dielectric layers. The phase shifter comprises a...
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...
7259642 Antenna control unit and phased-array antenna  
A paraelectric transmission line layer and a ferroelectric transmission line layer are laminated through a ground conductor, and plural phase shifters, which are connected via through holes that...
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...
7239220 Adjustable delay transmission line  
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...
7205866 Electronic phase reflector with enhanced phase shift performance  
A varactor based phase shifter that increases phase shift range using an impedance transformer to impart a low characteristic impedance between an input port and a reference node port. The...
7173503 Multibit phase shifter with active and passive phase bits, and active phase bit therefor  
An RF phase shifter includes the cascade of active and passive RF phase shift bits, having different phase increments. The active phase shift bit includes a FET with source and drain. First and...
7170446 Phased array antenna interconnect having substrate slat structures  
A phased array antenna is provided having a plurality of phase shifter devices for phase shifting and beam steering a radiated beam of the phased array antenna. The plurality of phase shifter...
7167064 Phase shift circuit and phase shifter  
A phase shift circuit and a phase shifter are achieved which are small in size and wide in bandwidth. The phase shift circuit includes a capacitor, and a series circuit composed of a switching...
7164330 Broadband phase shifter using coupled lines and parallel open/short stubs  
Provided is a broadband phase shifter using a coupled line and parallel open and short stubs. The broadband phase shifter of the present research has a new switching network structure by forming a...
7154357 Voltage tunable reflective coplanar phase shifters  
A phase shifter includes a substrate, a tunable dielectric film having a dielectric constant between 70 to 600, a tuning range of 20 to 60%, and a loss tangent between 0.008 to 0.03 at K and Ka...
7123115 Loaded line phase shifter having regions of higher and lower impedance  
An embodiment of the present invention provides a phase shifter, comprising: a base dielectric layer; a tunable dielectric layer overlaying at least a portion of the base dielectric layer; and at...
7123116 Phase shifter and multibit phase shifter  
A phase shifter includes an FET 2 a having its drain electrode connected to an input/output terminal 1 a ; and FET 2 b having its drain electrode connected to the source electrode of the FET ...
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...
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...
7015773 Electronic phase shifter with enhanced phase shift performance  
A varactor based phase shifter that increases phase shift range using a lower characteristic impedance between quadrature ports than is used at its input/output ports. The circuit makes use of a...
6989788 Antenna array having apparatus for producing time-delayed microwave signals using selectable time delay stages  
A scanned antenna array includes time delay stages each having at least one time delay sub-circuit. Each time delay sub-circuit includes a sub-circuit input, a sub-circuit output, a first delay...
6985049 Switched coupler type digital phase shifter using quadrature generator  
A switched coupler type digital phase shifter using a quadrature generator is disclosed. A switched coupler type digital phase shifter includes: a coupling unit for receiving one input signal and...
6972727 One-dimensional and two-dimensional electronically scanned slotted waveguide antennas using tunable band gap surfaces  
An electronically scanned slotted waveguide antenna radiates an RF signal as a scannable beam. The antenna has radiation waveguides positioned in an array. Radiation slots in the radiation...
6965269 Microwave phase shifter having an active layer under the phase shifting line and power amplifier using such a phase shifter  
A phase shifter according to this invention includes a circuit board having a semi-insulating layer. An active layer is formed in a transmission line forming portion on one surface side of the...
6958663 In-band group delay equalizer and distortion compensation amplifier  
An in-band group delay equalizer is formed in a simple circuit configuration so as to have a flat group delay characteristic over a wide frequency band without having a peak of group delay near...
6958665 Micro electro-mechanical system (MEMS) phase shifter  
A micro electro-mechanical system (MEMS) phase shifter for shifting the phase of a radio frequency (RF) signal. The phase shifter includes a quadrature coupler having an input port, an output port,...
6917265 Microwave frequency surface mount components and methods of forming same  
A microwave frequency device includes: a first substrate having a dielectric layer and a conductive film disposed on opposing first and second sides of the dielectric layer, the conductive film on...
6856216 Sample-and-hold phase shifter control voltage distribution in a phased array utilizing voltage-controlled phase shift devices  
A phase shift control voltage distribution scheme for a phased array utilizing voltage-proportional phase shift devices employs a digital-to-analog converter that supplies respectively different...
6806792 Broadband, four-bit, MMIC phase shifter  
A broadband, 4-bit MMIC phase shifter for use in a phased array antenna is provided. The four bit selectable phase shifter for use in a phased array antenna of the present invention, which...
6774745 Activation layer controlled variable impedance transmission line  
Techniques enabling electronic control of propagation constant associated with meanderline loaded antennas and phased arrays are disclosed. An activation layer can be electronically stimulated to...
6744334 Phase shifter capable of miniaturizing and method of manufacturing the same  
A phase shifter for switching passing phase of a high-frequency signal by means of ON/OFF control of a micro-machine switch, the micro-machine switch comprising cantilevers ( 11 a ), ( 11 b ) with...
6741207 Multi-bit phase shifters using MEM RF switches  
An RF phase shifter circuit includes first and second RF ports, and a switch circuit comprising a plurality of micro-electro-mechanical (“MEM”) switches responsive to control signals. The...
6710679 Analog rat-race phase shifters tuned by dielectric varactors  
A phase shifter includes a first rat-race ring having four ports, an input coupled to a first one of the ports, an output coupled to a second one of the ports, a first resonant circuit coupled to a...
6686814 Voltage tunable varactors and tunable devices including such varactors  
A voltage tunable dielectric varactor includes a substrate having a low dielectric constant and having generally planar surface, a tunable ferroelectric layer positioned on the generally planar...
6674341 Phase shifter and multibit phase shifter  
A miniaturized phase shifter and a multi-bit phase shifter are provided, in which filters are constructed using capacitors at FET pinch-off and pass phase can be shifted by turning the FET on and...
6674340 RF MEMS switch loop 180° phase bit radiator circuit  
A switched loop RF radiator circuit, comprising a radiator element, a RF input/output (I/O) port, and a balun coupled between the radiator element and the (I/O) port. The balun includes a 180°...
6664869 Delay line filters using multiple in-line four-input couplers  
A delay circuit for the secondary path of a feed-forward high power amplifier is disclosed. A first 3 dB quadrature hybrid coupler is coupled to first and second resonator circuits that are...
6664870 Compact 180 degree phase shifter  
A phase shifter for changing the phase of a signal fed thereto. The phase shifter includes an inductive reactance element and a capacitive reactance element having one electrode connected to either...
6630874 Phase shifter and communication device using the same  
A phase shifter includes a comb-line defined by first and second transmission lines that are electromagnetically coupled with each other and a plurality of variable-capacitance diodes connected to...
6600388 Electronic variable delay line filters using two in-line varactor-controlled four-input couplers allowing variable delay  
A delay circuit for the secondary path of a feed-forward high power amplifier is disclosed. A first 3 dB quadrature hybrid coupler is coupled to first and second resonator circuits that each...
6587017 Method and apparatus for calibrated phase-shift networks  
An apparatus comprising a first calibration circuit and a phase shift network stage. The first calibration circuit may be configured to generate a control signal. The phase shift network stage may...
6545563 Digitally controlled monolithic microwave integrated circuits  
A transmit/receive module including digitally controlled analog circuits is described. The digital circuits use a logic family adapted for use with analog monolithic integrated circuits. The...
Matches 1 - 50 out of 242 1 2 3 4 5 >