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Class Information
Number: 333/139
Name: Wave transmission lines and networks > Coupling networks > Delay lines including a lumped parameter > Variable parameter
Description: Subject matter including at least one variable parameter for delay adjustment.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8680945 Metamaterial enabled compact wideband tunable phase shifters Mar. 25, 2014
8405466 Wideband low frequency impedance tuner Mar. 26, 2013
8248302 Reflection-type phase shifter having reflection loads implemented using transmission lines and phased-array receiver/transmitter utilizing the same Aug. 21, 2012
8216701 Thin film compositionally stratified multi-layer heterostructure for temperature insensitive low dielectric loss and enhanced tunability OTM communications devices and methods for fabrication Jul. 10, 2012
8212629 Wideband low frequency impedance tuner Jul. 3, 2012
8212632 FET phase shifter for selectively phase shifting signals between different filtering characteristics Jul. 3, 2012
8179208 Interconnect for surfing circuits May. 15, 2012
8149165 Configurable antenna interface Apr. 3, 2012
7928817 Switchable high pass filter/low pass filter phase shifter having a switch circuit with FETs connected in parallel Apr. 19, 2011
7907100 Phased array antenna with extended resonance power divider/phase shifter circuit Mar. 15, 2011
7864000 High frequency switching circuit Jan. 4, 2011
7855611 Delay line calibration Dec. 21, 2010
7843282 Phase shifter with flexible control voltage Nov. 30, 2010
7839237 Phase shifter with flexible control voltage Nov. 23, 2010
7812689 Phase shifter including a resonant type switch with a free region Oct. 12, 2010
7764142 Series connected bit phase shifter having first and second impedance adjusting circuits Jul. 27, 2010
7724107 Phase shifter having switchable signal paths where one signal path includes no shunt capacitor and inductor May. 25, 2010
7719386 Phase shifter having components which suppress fluctuations in the phase shifter pass characteristics May. 18, 2010
7714681 Reconfigurable phase-shifter May. 11, 2010
7646268 Low frequency harmonic load pull tuner and method Jan. 12, 2010
7561007 Switchable phase shifter for providing selectable phase shift paths Jul. 14, 2009
7541894 Phase-shifting circuit and multibit phase shifter Jun. 2, 2009
7535320 Phase shifter with flexible control voltage May. 19, 2009
7498903 Digital phase shifter Mar. 3, 2009
7498999 Circuit board having a peripheral antenna apparatus with selectable antenna elements and selectable phase shifting Mar. 3, 2009
7456706 Method and apparatus for electrically adjusting delay in radio-frequency systems Nov. 25, 2008
7355492 Electronically controlled hybrid digital and analog phase shifter Apr. 8, 2008
7352189 Time aligned bussed triggering using synchronized time-stamps and programmable delays Apr. 1, 2008
7342534 Phased array radio frequency pulse generator Mar. 11, 2008
7336143 Variable delay line using variable reactance devices to provide reflected delay signals Feb. 26, 2008
7333790 Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains Feb. 19, 2008
7315225 Phase shifter providing multiple selectable phase shift states Jan. 1, 2008
7283018 Variable matching circuit, variable resonance circuit, variable phase-shifting circuit and variable attenuation circuit each having variable-capacitance capacitor Oct. 16, 2007
7276993 Analog phase shifter using cascaded voltage tunable capacitor Oct. 2, 2007
7239218 Phase shifter having switchable high pass filter and low pass filter paths and impedance adjustment circuits Jul. 3, 2007
7199665 Single to dual non-overlapping converter Apr. 3, 2007
7164329 Tunable phase shifer with a control signal generator responsive to DC offset in a mixed signal Jan. 16, 2007
7154440 Phase array antenna using a constant-gain phase shifter Dec. 26, 2006
7123116 Phase shifter and multibit phase shifter Oct. 17, 2006
7049907 System and method for adjusting group delay May. 23, 2006
7012482 RF phase delay lines with variable displacement fluidic dielectric Mar. 14, 2006
6864760 Delay line with a parallel capacitance for adjusting the delay time Mar. 8, 2005
6856215 System and method for adjusting group delay Feb. 15, 2005
6806792 Broadband, four-bit, MMIC phase shifter Oct. 19, 2004
6781855 Power diverter Aug. 24, 2004
6674341 Phase shifter and multibit phase shifter Jan. 6, 2004
6587017 Method and apparatus for calibrated phase-shift networks Jul. 1, 2003
6545563 Digitally controlled monolithic microwave integrated circuits Apr. 8, 2003
6531935 Vector modulator Mar. 11, 2003
6400237 Phase compensation circuit, frequency converter device and active phased array antenna Jun. 4, 2002

1 2 3

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