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7605672 |
Inverted style balun with DC isolated differential ports
The present invention is directed to a balun that includes a first coupler structure having a first port of a balanced port pair and an unbalanced port. A second coupler structure includes a second...
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7579929 |
Transmission circuit, antenna duplexer, and radio-frequency switch circuit
A small-sized, high-performance transmission circuit is provided which avoids degradation in transmission line characteristics caused by coupling, due to a transmission line and a leader electrode...
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7541892 |
Three-way splitter including a printed element
According to one exemplary embodiment, a three-way splitter includes a printed element and a resistive network comprising discrete resistors. A first printed branch, second printed branch, and...
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7528675 |
Microstrip-type BALUN, broadcast receiving apparatus using the same and method of forming thereof
Disclosed are a microstrip-type BALUN (BALance to UNbalance transformer), broadcast receiving apparatus using the same, and a method for forming the same. The BALUN includes a board and a...
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7483606 |
Planar power splitter
The present invention provides a splitter. The splitter includes a substrate and a layer formed on the substrate. The layer is patterned such that a signal applied to at least one input port is...
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7456704 |
2D transmission line-based apparatus and method
A power combiner comprising an LC lattice structure is shown, together with a method for generating a planar wave front. The LC structure can comprise constant or voltage dependent capacitors....
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7400215 |
Method and apparatus for increasing performance in a waveguide-based spatial power combiner
A power combining array and method of increasing performance in a power combining array includes a waveguide enclosure having a plurality of slotline modules disposed therein. The slotline modules...
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7324060 |
Power divider having unequal power division and antenna array feed network using such unequal power dividers
An RF power divider circuit unequally divides an input signal into first and second signal components of unequal power. The circuit includes a single input port, first and second output ports, and...
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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...
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7215220 |
Broadband power combining device using antipodal finline structure
A broadband power combining device includes an input port, an input waveguide section, a center waveguide section formed by stacked wedge-shaped trays, an output waveguide section, and an output...
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7205865 |
Power divider and combiner in communication system
Disclosed is a high frequency omni-directional 2-way power divider which includes one input terminal and two output terminals so that a signal inputted through the input terminal is uniformly...
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7200365 |
Composite high frequency component and mobile communication device including the same
The invention provides a composite high frequency component constituting a part of a microwave circuit having plural signal paths corresponding to their respective frequencies, comprising: a...
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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...
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7151423 |
Demultiplexer and multiplexer
A demultiplexer receives a multiplexed signal, in which a plurality of electrical signals with mutually different frequencies are multiplexed together, and divides the multiplexed signal into the...
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7151421 |
Coupler
The present invention provides a coupler having a high degree of coupling. The coupler comprises first and second dielectric substrates each having first and second surfaces which are parallel to...
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7123884 |
RF switch
A radio frequency (RF) switch which is used in an RF unit of a communication apparatus and which has less of an insertion loss during a transmission. A strip line disposed in the RF switch is...
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7030715 |
High-frequency semiconductor device
There is provided a high-frequency GaAs power FET element with high performance, capable of suppressing an abnormal oscillation. Thin film resistors are provided so as to be connected electrically...
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7026889 |
Adjustable antenna feed network with integrated phase shifter
A device for feeding signals between a common line and two or more ports. The device including a branched network of feedlines coupling the common line with the ports. The feedlines have...
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7023295 |
Transmission line having photonic band gap coplanar waveguide structure and method for fabricating power divider using the same
A photonic band gap coplanar waveguide transmission line and a method for fabricating a power divider using the same capable of increasing a characteristic impedance, increasing a signal line width...
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7015772 |
Tunable amplitude unbalance stripline combiner
A tunable amplitude unbalance stripline combiner for RF signals in which the amplitude unbalance can be adjusted in order to minimize the amplitude unbalance. The combiner has an upper printed...
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7005726 |
Semiconductor device with an improved transmission line
A semiconductor device with integrated circuits includes superimposed layers provided at different levels on a substrate, and including a metal strip ( 3 ) formed in a reference layer and through...
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6980066 |
High-frequency module
It is an object of the present invention to provide a high-frequency module whose production yield as a complete module can be prevented from being lowered. The high-frequency module according to...
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6922116 |
Generating arbitrary passive beam forming networks
Disclosed are systems and methods which apply design criteria to beam forming network parameters to arrive at a passive beam forming network design. Preferably a beam forming network approach is...
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6903625 |
Microstrip RF signal combiner
A microwave signal combiner having a dielectric board with a main line on one surface and a plurality of cascaded input lines on a second, and opposite surface. The second surface includes a ground...
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6861923 |
Power divider/combiner with a multilayer structure
The invention relates to a power management arrangement which comprises, formed as a multilayer structure ( 100 ), several insulating layers ( 130, 132, 134, 136 ); several conductive layers ( 124,...
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6847813 |
RF printed circuit board connector with through-hole leads
A radio frequency connector that protrudes through a printed circuit board is comprised of threaded leads. A center conductor is shielded when a shielding connector cap, having a threaded inner...
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6838955 |
Data processing device
The invention relates to methods and structures for connecting circuits and circuit elements processing electrical signals having very fast transition times, including sub-nanosecond transition...
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6822531 |
Switched-frequency power dividers/combiners
Switchable path length coupler/dividers. Coupler/divider operation over multiple frequency bands is provided by using switchable path lengths. In one implementation, a Wilkinson-style device with...
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6819202 |
Power splitter having counter rotating circuit lines
A power splitter that has a small package size and low cross-talk noise. The power splitter includes a low temperature co-fired ceramic (LTTC) substrate with several layers. Electrical components...
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6803837 |
Power splitter/combiner circuit, high power amplifier and balun circuit
A balun design incorporating the functions of a splitter (combiner) which can be employed in a high power amplifier circuit configuration. The balun is formed of a dielectric multilayer board with...
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6784758 |
Degenerate mode combiner
A wave device for supporting electromagnetic waves, the device including a first pair of inputs for setting up a first standing wave therebetween a second pair of inputs for setting up a second...
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6778037 |
Means for handling high-frequency energy
The invention relates to structures, by which part of the incoming high-frequency energy can be separated to its own path (out 1 ) or energies coming from different paths can be combined to a...
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6703909 |
Covering sheet, triplate line using the sheet, signal bus for computer using the sheet and covering structure of electronic circuit using the sheet
The covering sheet includes at least one magnetic material layer made of a resin compound having an oxide magnetic material or a metal magnetic material mixed therein, a ground conductor layer...
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6690249 |
Power splitter/combiner multi-layer circuit
A high power amplifier has a first balun propagating a half of an input signal to an in-phase output terminal, and also propagating a fourth of the input signal to first and second opposite-phase...
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6686810 |
Coplanar waveguide switch
A device having a capacitor for changing the impedance of a section of a coplanar waveguide is provided, the capacitance of the capacitor being changeable, the signal line of the section of the...
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6642819 |
Method and bend structure for reducing transmission line bend loss
A dielectric transmission line bend structure includes an electrically conductive strip that forms a bend (e.g., a right angle bend). The inner edge of the bend includes a plurality of curved...
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6622370 |
Method for fabricating suspended transmission line
A method for fabricating a suspended transmission line includes supporting a first conductive trace on a first side of a dielectric support layer. A second conductive trace is supported on a second...
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6614325 |
RF/IF signal distribution network utilizing broadside coupled stripline
A Printed Circuit Board (PCB) ( 30, 70, 102 ) and method of manufacturing same. The PCB ( 30, 70, 102 ) includes an embedded shielded conductor structure comprising a dielectric layer ( 42 )...
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6608535 |
Suspended transmission line with embedded signal channeling device
A suspended transmission line with an embedded signal channeling device includes a support layer and a conductor supported by the support layer between first and second plates each having a ground...
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6570466 |
Ultra broadband traveling wave divider/combiner
An ultra broadband traveling wave divider/combiner (TWD/C) with a two section power splitter with an isolation resistor connected in series with a capacitor across the outputs of each set of...
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6549090 |
Inverted coplanar waveguide coupler with integral microstrip connection ports
A coplanar coupler for use with microstrip input and output ports includes a printed circuit substrate in which first and second metal input ports are formed on a top surface and cooperate with a...
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6538528 |
T-circuit produced using microstrip technology with a phase-shifting element
The present invention relates to a T-circuit produced using microstrip technology with two branches ( 2, 3 ) of identical length L 2 comprising a phase-shifting element ( 6 ) producing a given...
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6525631 |
System and method for improved microstrip termination
A microstrip termination is provided with a thin film resistor connecting a transmission line to a tapered edge ground, enabling high frequency performance, such as for optical modulators. The...
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6525623 |
Multi-layer microwave circuits and methods of manufacture
A multi-layer circuit comprises first and second transmission lines. The first transmission line includes vertically stacked bottom and middle dielectric layers. A conductive pattern is disposed...
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6515557 |
Isolating signal divider/combiner and method of combining signals of first and second frequencies
A signal divider/combiner ( 11 ) and method combines first and second frequency signals received by microstrip patch antennas ( 58, 48 ). A first transmission line stub ( 28 ) blocks the second...
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6489859 |
Power divider/combiner
The prior art has a problem in which an isolation between output terminals is deteriorated when a thin film resistor is used as an isolation resistor. Such being the case, in a power...
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6477060 |
Dual channel bus routing using asymmetric striplines
A printed circuit board utilizes asymmetric striplines to accommodate a large number of transmission lines on a six-layer board. The asymmetric striplines are formed from two signal layers that are...
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6441696 |
Balun
The present invention relates to a balun circuit that includes means for transforming a balanced input signal to an unbalanced signal and impedance changing means. The means for transforming the...
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6335664 |
Branch circuit and its designing method, waveguide-microstrip transition, and application to HF circuit, antenna and communication system
A circuit assembly having a thin and large-area dielectric substrate and improved grounding. To make the assembly, a circuit board comprising the substrate, and a circuit pattern and a metal layer...
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6335662 |
Ferroelectric-tunable microwave branching couplers
The invention discloses the utilization of various transmission lines that entail a ferroelectric material as dielectric substrate to introduce an impedance shift by means of an externally applied...
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