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| Number | Title | Issue Date |
| 8154361 | Communicating over coaxial cable networks A method for communicating over a coaxial cable network is described. The method includes identifying at least one port in the coaxial cable network that provides high mutual isolation among nodes of the coaxial cable network when the port is terminated with an impe... | 04/10/2012 |
| 8076996 | Hybrid balun apparatus A hybrid balun apparatus are disclosed. The hybrid balun apparatus can support both the reception mode and the transmission mode and be advantageous for a high level of integration, by replacing two transformers disposed at a reception path and a transmission path w... | 12/13/2011 |
| 7834719 | Lange-ferrite circulator for simultaneous transmit and receive (STAR) with high isolation and noise suppression A three port circulator capable of simultaneous transmit and receive operations, high frequency, enhanced high isolation, noise suppression at the receive port and broadband performance comprising: an antenna port; a transmission port; a receiving port; wherein each... | 11/16/2010 |
| 7821355 | Waveguide antenna front end In some embodiments of the present invention, an antenna front end includes at least two diplexers. Each of the diplexers is defined with a channel within a single material block. Each channel is shaped to provide a diplexer which includes a coupler, a receive band ... | 10/26/2010 |
| 7808343 | Radio frequency (RF) signal combiner having inverted coupler A radio frequency (RF) communication device may include an RF 90-degree hybrid combiner having stable phase and loss characteristics over greater than one octave of bandwidth, while providing a high degree of isolation between input and isolated port. The structure ... | 10/05/2010 |
| 7746193 | Miniature 180 degree hybrid coupler A 180° hybrid coupler (100) includes a first transmission line transformer (101) and a second transmission line transformer (102). Each of the first and second transmission line transformers is comprised of a coplanar stripline structure dispos... | 06/29/2010 |
| 7592880 | Communicating over coaxial cable networks A method for communicating over a coaxial cable network is described. The method includes identifying at least one port in the coaxial cable network that provides high mutual isolation among nodes of the coaxial cable network when the port is terminated with an impe... | 09/22/2009 |
| 7592881 | Power broadband amplifier A circuit for broadband amplification is provided. The circuit includes an input HF_IN and an output HF_OUT, a first 90° hybrid coupler being connected to the input HF_IN of the circuit and a second 90° hybrid coupler being connected to the output HF_OUT of the ci... | 09/22/2009 |
| 7541890 | Quasi active MIMIC circulator A circulator capable of simultaneous transmit and receive operations, high frequency, and high isolation and broadband performance comprising: an antenna port; a transmission port; a receiving port; wherein each port is connected to a 90 degree combiner/divider for ... | 06/02/2009 |
| 7538635 | Quadrature hybrid circuit having variable reactances at the four ports thereof Four variable reactance means are connected, respectively, to the four ports of a quadrature hybrid circuit which is composed of four ring-linked two-port circuits each composed of a transmission line or multiple lumped reactance elements, so that by changing the re... | 05/26/2009 |
| 7518467 | Dynamic, non frequency dispersive, RF power division by means of variable dielectric material properties A monolithic thin film variable power divider is disclosed for variable power level distribution. The thin film power divider includes a substrate having a main surface, a first stage and a second stage, each formed as thin film networks on the main surface of the s... | 04/14/2009 |
| 7474172 | Capacitively coupled variable power divider A wiper-type variable power divider with capacitive junctions to minimize the creation of passive intermodulation interference (PIM) during adjustment of the power divider. The variable power divider includes an adjustable, wiper-type phase shifter connected to a hy... | 01/06/2009 |
| 7443266 | Variable power coupling device An apparatus and method for providing adaptive control of the output of a radio frequency coupler. Adaptive control may include providing a transmission line having a plurality of branches extending therefrom and terminating, correspondingly, with a plurality of ter... | 10/28/2008 |
| 7403081 | Broadband hybrid junction and associated methods The hybrid junction includes four electrically conductive planar windings, circular or rectangular, arranged so as to lie along an imaginary spherical or cylindrical surface. Each of the four electrically conductive windings is rotated from adjacent windings by abou... | 07/22/2008 |
| 7400214 | Low loss, high power air dielectric stripline edge coupling structure A high power, low loss RF strip transmission line coupling structure is provided. It includes a multi-layer printed circuit board (PCB), a top cover and a bottom cover. The top and bottom covers provide the ground reference for the strip transmission line coupling s... | 07/15/2008 |
| 7397323 | Orthomode transducer A waveguide orthomode transducer. In a first layer a turnstile junction having a main waveguide and four waveguide ports, and four hybrid tees each have an e-port, two opposed side-ports, and an h-port. The hybrid tees are ring-arranged around the turnstile junction... | 07/08/2008 |
| 7385461 | Method of combining signals and device therefor A bias T device (20) and a method for combining a first DC signal with a second RF signal is disclosed. The device (20) is provided with a first signal splitting means (30) in the form of a hybrid 90 degree (quadrature) coupler having at least t... | 06/10/2008 |
| 7375603 | Integrated coupler A non-directional coupler including a semiconductor junction in series with a capacitor, the semiconductor junction being formed so that the threshold frequency short of which it behaves as a rectifier is smaller than the coupler's operating frequency. ... | 05/20/2008 |
| 7345557 | Multi-section coupler assembly A coupler assembly may include first and second electromagnetic couplers connected together. In some examples, the couplers may be connected in cascade configuration, with at least the second coupler including at least third and fourth couplers connected in tandem c... | 03/18/2008 |
| 7342466 | Hybrid coupler having resistive coupling and electromagnetic coupling In some embodiments, a hybrid coupler is provided with a resistive coupler to conductively tap a transmission line and an electromagnetic coupler to be disposed next to the transmission line to electromagnetically tap it. Other embodiments are disclosed herein. ... | 03/11/2008 |
| 7323950 | Balanced hybrid coupler network An electrical processing network including a first set of ports and a second set of ports electrically coupled to the first set of ports. The first set of ports are for a first set of signals with approximately 0° and 180° relative phase. The second set of ports a... | 01/29/2008 |
| 7319370 | 180 degrees hybrid coupler A multilayer 180 degree hybrid coupler comprises a cascaded pair of quarter wavelength directional couplers, one of the connections between the directional couplers being made by direct connection and the other connection being made indirectly via a length of transm... | 01/15/2008 |
| 7307493 | Broadband 180° degree hybrid microwave planar transformer A hybrid 180° microwave balun device is provided to convert an unbalanced RF signal at the common port into two radio frequency signals with equal amplitude and 180° phase difference at two differential ports. The hybrid device includes a coplanar waveguide connec... | 12/11/2007 |
| 7301422 | Variable differential phase shifter having a divider wiper arm A variable differential phase shifter including an isolation element providing good isolation between output ports, good return loss and reduced reflections. In one embodiment a Wilkinson divider is incorporated in the wiper arm of a wiper type variable differential... | 11/27/2007 |
| 7298229 | Multi-layered inductively coupled helical directional coupler A coupling device in FIG. 3 consisting of upper and lower connecting plates 100 and 101 with external flanges parallel to transmission line (103) for coupling RF energy for forward power detection. The coupling device (100) incorpo... | 11/20/2007 |
| 7268606 | High-frequency signal switching An electronic signal processing apparatus has a signal switch with a first and a second transistor of normally-on type, having main current channels coupled between an internal node and a switch input and output, respectively. A diode provides a switchable signal co... | 09/11/2007 |
| 7254374 | Switchable multi-transmitter combiner and method A transmitter-combining broadcast system and method is provided that allows IBOC-compatible broadcast with simple analog-to-IBOC upgradeability with high efficiency. At full power, a standard analog signal and an IBOC-compatible digital signal are transmitted by com... | 08/07/2007 |
| 7245192 | Coupler with edge and broadside coupled sections Couplers are disclosed that include first and second mutually coupled conductors. The coupled conductors may be regular or irregular in configuration, and for example, may be linear, including rectilinear or with one or more curves, bends or turns, such as forming a... | 07/17/2007 |
| 7233217 | Microstrip phase shifter A phase shifter adjusts the phase between two segments of an RF feed line that are fed with the phase shifter. Specifically, the phase shifter adjusts the phase between two signals in RF feed line segments by changing the electrical path lengths that RF energy trave... | 06/19/2007 |
| 7221239 | Variable power divider A variable power divider and method can vary the RF power between ports in a high power and multi-carrier RF environment, such as is used in controlling signals sent and received in a base station antenna. The variable power divider can include a single-control phas... | 05/22/2007 |
| 7218187 | Bow tie coupler A wide bandwidth coupler has two outer elements around a center element. The outer elements are rectangular at their outside portions and each have a tapered nose portion next to the center element. A matching network electrically connects the two outer elements and... | 05/15/2007 |
| 7218285 | Metamaterial scanning lens antenna systems and methods The present invention is directed to systems and methods for radiating radar signals, communication signals, or other similar signals. In one embodiment, a system includes a controller that generates a control signal and an antenna coupled to the controller. The ant... | 05/15/2007 |
| 7212960 | Computer program product and method of simulating circuits using a balanced, lossy, transmission line circuit model A computer program product and method of simulation involve the present computer simulation model of a lossy transmission line. The model uses a hybrid model at each end of the transmission line, each hybrid model coupled to a port of the transmission line. Each hyb... | 05/01/2007 |
| 7190240 | Multi-section coupler assembly A coupler assembly may include first and second electromagnetic couplers connected together. In some examples, the couplers may be connected in cascade configuration, with at least the second coupler including at least third and fourth couplers connected in tandem c... | 03/13/2007 |
| 7187251 | DC isolated phase inverter and a ring hybrid coupler including the DC isolated phase inverter A direct current (DC) isolated phase inverter and a ring hybrid coupler including the DC isolated phase inverter is provided. The ring hybrid coupler including the DC isolated phase inverter comprising: a first, second, third and fourth transmission line arm; a firs... | 03/06/2007 |
| 7170466 | Wiper-type phase shifter with cantilever shoe and dual-polarization antenna with commonly driven phase shifters A wiper-type phase shifter with a cantilever shoe that ensures that the electrical contact on the wiper arm remains in electrical communication with the transmission trace located on the antenna backplane without relying to an element, such as a spring-loaded set sc... | 01/30/2007 |
| 7164903 | Integrated N-way Wilkinson power divider/combiner An integrated N-way Wilkinson power divider is described. In one embodiment, the N-way Wilkinson power divider uses a conductor layer with a cross-over (or cross-under) resistor insulated from the conducting layer by an insulating bridge. In one embodiment, the widt... | 01/16/2007 |
| 7151422 | 90° hybrid A 90° hybrid for splitting or interconnecting radio frequency power includes four gate connections, capacitances and inductances for electric capacitive coupling and magnetic inductive coupling, an arrangement of strip conductors that are disposed approximately par... | 12/19/2006 |
| 7138887 | Coupler with lateral extension A coupler is disclosed that includes first and second mutually coupled spirals or loops disposed on opposite sides of a dielectric substrate. The substrate may be formed of one or more layers and the loops may have a number of turns appropriate for a given applicati... | 11/21/2006 |
| 7126439 | Bow tie coupler A wide bandwidth coupler has two outer elements around a center element. The outer elements are rectangular at their outside portions and each have a tapered nose portion next to the center element. A matching network electrically connects the two outer elements and... | 10/24/2006 |
