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| Number | Title | Issue Date |
| 8188816 | Compact harmonic impedance tuner Compact high reflection and harmonic frequency impedance tuners use the slide screw principle and new slabline structures, either with three slots arranged at 120° to each other or four slots arranged in a cross form 90° to each other. The tuners comprise up to th... | 05/29/2012 |
| 8159317 | Variable impedance adapter for tuning system performance A variable impedance adapter that has a value of characteristic impedance that is responsive to changes in the configuration of the adapter. In one embodiment, the variable impedance adapter includes an elongated section and a telescoping section that surround a cen... | 04/17/2012 |
| 8022795 | Variable impedance adapter for tuning system performance A variable impedance adapter that has a value of characteristic impedance that is responsive to changes in the configuration of the adapter. In one embodiment, the variable impedance adapter includes an elongated section and a telescoping section that surround a cen... | 09/20/2011 |
| 7646267 | Low frequency electro-mechanical impedance tuner A segmented, electro-mechanical, remotely controlled programmable impedance tuner for the frequency range between 10 and 200 MHz uses a cascade of three continuously variable mechanical capacitors interconnected by a set of two low loss flexible or semi-rigid cables... | 01/12/2010 |
| 7646268 | Low frequency harmonic load pull tuner and method An electro-mechanical harmonic load pull tuner uses three variable and adjustable shunt air capacitors and three variable and adjustable series phase shifters and creates independently controllable impedances at three harmonic frequencies in the frequency range betw... | 01/12/2010 |
| 7595709 | Multiple-carriages high gamma tuner The present invention discloses a class of independent or linked facing tuning elements to be used in loadpull high gamma slide-screw tuner consisting of a radio-frequency (RF) transmission media comprising impedance tuning elements such as probes, corrugated probes... | 09/29/2009 |
| 7358830 | Compact segmented stub A segmented stub has at least one serpentine signal path that increases the effective electrical length of the stub without increasing the overall physical length or area of the stub. This permits more compact monolithic millimeter-wave and microwave integrated circ... | 04/15/2008 |
| 7348869 | Adjustable coaxial filter device with axially adjustable inner conductor An adjustable filter includes an outer conductor, a first inner conductor, and a second inner conductor. The inner conductors are capacitively coupled on the same axis. The further may further include a third inner conductor capacitively coupled to both the first an... | 03/25/2008 |
| 7283347 | Low cost digital variable capacitor A digital variable capacitor package is provided as having a ground plane disposed on predetermined portion of the top surface of a substrate. An elongated signal electrode may also be disposed on the substrate and including a first end defining an input and a secon... | 10/16/2007 |
| 7280012 | Multi-probes as single RF tuning element for RF slide-screw tuners The present invention discloses a class of RF corrugated probes to be used in load-pull slide-screw tuner consisting of a radio-frequency (RF) or microwave slotted airline (slabline) comprising at least one RF corrugated probe controlled horizontally and vertically ... | 10/09/2007 |
| 7271681 | Clearance hole size adjustment for impedance control in multilayer electronic packaging and printed circuit boards The present invention provides a technique for adjusting the size of clearance holes for impedance control in multilayer electronic packaging and printed circuit boards. The method comprises: providing parameters for a structure having a clearance hole and at least ... | 09/18/2007 |
| 7212078 | Method and assembly for providing impedance matching network and network assembly An impedance matching network and network assembly employ one or more variable inductive elements, wherein one or more of the variable inductive elements includes a high temperature ferrite core, a helical coil, and a means for physically translating the magnetic co... | 05/01/2007 |
| 7190244 | Reduced size transmission line using capacitive loading A capacitively loaded multilevel transmission line network for operation at a microwave frequency f is disclosed wherein microstrip conductors are disposed over or under a uniplanar transmission line (UTL), electrically connected thereto at or near opposing ends of ... | 03/13/2007 |
| 7168680 | Embedded control valve using electroactive material A microfluidic control valve (100) comprising a dielectric structure (105) defining at least one cavity (260) therein. An electroactive material (305), such as an electroactive polymer, is disposed in a portion of the cavity. The electroa... | 01/30/2007 |
| 7126438 | Circuit and method for transmitting an output signal using a microelectromechanical systems varactor and a series inductive device A circuit and method for transmitting an output signal utilizes an inductive device connected in series with a microelectromechanical systems (MEMS) varactor to increase the potential difference across the MEMS varactor due to the output signal by introducing induct... | 10/24/2006 |
| 7102457 | Mechanically balanced microwave load pull tuner A mechanically balanced automatic microwave tuner is used in on-wafer device testing. Using low loss rigid airlines to connect the tuner and the devices improves the tuning range at the DUT reference plane but causes mechanical movements of the wafer probes, when th... | 09/05/2006 |
| 7053728 | Impedance transformation network, power amplifier and method for efficiently transmitting output signal using a series varactor device An impedance transformation network, power amplifier and method for efficiently transmitting an output signal utilizes a series varactor device to provide a variable impedance transformation. The series varactor device may include a number of stacked ferroelectric v... | 05/30/2006 |
| 7034629 | High frequency, high reflection pre-matching tuners with variable zero initialization Automatic microwave pre-matching tuners with new zero positioning capability allowing for a minimum idle airline section between pre-matching and tuning section, thus minimizing insertion loss and enhancing high reflection tuning capability at high frequencies and t... | 04/25/2006 |
| 7012490 | High frequency signal transmission structure A connection pad, an insulating film, a ground layer a protective film, first to third wirings and posts S0, S1, G, D on the wirings are disposed on a semiconductor substrate. In this case, the first wiring transmits a high frequency signal, an... | 03/14/2006 |
| 7009463 | Harmonic reflective load-pull tuner The present invention discloses a harmonic reflective tuner system consisting of a radio-frequency (RF) or microwave transmission line having a longitudinal axis, containing two harmonic resonators sliding on the central conductor, where the harmonic resonators are ... | 03/07/2006 |
| 7002432 | Signal transmission structure A signal transmission structure includes at least one reference plane with a non-reference area, and a signal line with a salient protruding over the edge of the signal line and the salient is corresponding to the position of the non-reference area. When a signal pa... | 02/21/2006 |
| 6992550 | Adjustable transmission line stub including a conductive fluid A circuit for processing radio frequency signals that includes an adjustable transmission line stub (104). The adjustable transmission line stub (104) has an input (106) at one end, an electrical length and a termination (112). The circui... | 01/31/2006 |
| 6982610 | Termination impedance tuning circuit An impedance adjustment system comprising current source, a first series and a second series connected string of predetermined number of resistors, a first and second switch network, a first, second and third logic circuit and a comparator. By applying the principle... | 01/03/2006 |
| 6972728 | Horn antenna with dynamically variable geometry An electromagnetic horn antenna (100). The antenna can include a horn housing having a throat portion (102), a tapered portion (106, 104) and an aperture 108. At least one cavity structure (142, 144, 138) can be provided within the... | 12/06/2005 |
| 6917264 | Coaxial line phase stabilization assembly and method An apparatus and method stabilizes a pair of parallel coaxial lines for an antenna having a tower. An upper portion of each coaxial line is suspended from the tower. A lower end of the coaxial lines is free to move vertically relative to the tower. The apparatus has... | 07/12/2005 |
| 6894583 | Variable quarter-wave transformer A continuously variable quarter-wave transformer (103) including a quarter-wave element (110). The quarter-wave transformer has a characteristic impedance and is at least partially coupled to a fluidic dielectric (108). A controller (136)... | 05/17/2005 |
| 6894591 | Fluidically adjustable transmission line stub The present invention relates to a variable tuned transmission line stub (102). The transmission line stub (102) has an input (104) at one end, an electrical length, and a termination at an opposing end (122). A fluid dielectric (108 | 05/17/2005 |
| 6876281 | Variable transmission line transformer A transmission line transformer (102) having an electrical length and a fluid dielectric (108). A fluid control system (150) is also provided for selectively moving the fluid dielectric (108) from a first position to a second position. In... | 04/05/2005 |
| 6870439 | Tunable transmission line stub coupled to a fluid dielectric A circuit for processing radio frequency signals. The circuit is a transmission line stub (110) coupled to a fluidic dielectric (108) and includes a composition processor (101) for selectively varying a composition of the fluidic dielectric. Var... | 03/22/2005 |
| 6859115 | Stub transformer for power supply impedance reduction A computer power supply system for reducing the AC impedance of a DC power supply (52) at inputs pins of a computing device (54) such as a processor. A quarter wavelength transmission line stub (58) is connected to a computing device DC power su... | 02/22/2005 |
| 6677830 | Broadband matching network for an electroabsorption optical modulator A broadband impedance matching circuit for use with an optical device such as an electroabsorption optical modulator comprises a microstrip transmission line, including pairs of like-sized open stubs disposed on opposite sides of the transmission line alo... | 01/13/2004 |
| 6664868 | Shim-tuned coaxial cable impedance transformer A shim-tuned transformer for matching the impedance of a generator and a load coupled to the generator via a transmission line. The transformer includes an outer conductor having an inner surface and an inner conductor positioned within the outer conducto... | 12/16/2003 |
| 6646525 | Microelectro-mechanical system actuator device and reconfigurable circuits utilizing same A microelectro-mechanical device which includes a fixed electrode formed on a substrate, the fixed electrode including a transparent, high resistance layer, and a moveable electrode formed with an anisotropic stress in a predetermined direction and dispos... | 11/11/2003 |
| 6630833 | Measurement by concentration of a material within a structure Systems, methods, and probe devices for electronic monitoring and characterization using absorbent media confined by a metallic mesh. The mesh allows a stream of liquid or gas to pass through the structure, so that the media will adsorb the material to wh... | 10/07/2003 |
| 6624718 | Signal transmission unit A signal transmission unit includes a first transmission line, a second transmission line, and a tapered transmission line coupling the first transmission line to the second transmission line. The tapered transmission line has a width and a length and the... | 09/23/2003 |
| 6504448 | Apparatus and method for transmission line impedance tuning using periodic capacitive stubs A method of tuning transmission line impedance includes the step of determining a desired impedance for a transmission line. A capacitive stub is periodically added to the transmission line. A physical quantity to be removed from each of the capacitive st... | 01/07/2003 |
| 6445256 | Oscillator and radio equipment The present invention provides a small-sized oscillator facilitating the adjustment of a resonance frequency, permitting mass productivity to be improved, sufficiently suppressing a fundamental wave, and permitting cost reduction, and provides radio equip... | 09/03/2002 |
| 6392511 | RF impedance selector and/or RF short switch An impedance selector includes an input port receiving input signals. An outer conductor electrically communicates with the input port. A dielectric material is encircled by the outer conductor. An inner conductive core is encircled by the outer conductor... | 05/21/2002 |
| 6333683 | Reflection mode phase shifter The invention is a mechanically or electro-mechanically driven phase shifter for radio frequencies. It is a device for phase shifting a signal propagating through a transmission line by moving a conductive construct between an active line and a ground pla... | 12/25/2001 |
| 6147501 | Automatic calibration of a network analyzer A radio frequency network analyzer connected to a multi-port test set is calibrated. An initial calibration is performed for each test set port in the multi-port test set. The initial calibration is performed by first performing a measurement calibration ... | 11/14/2000 |
