Werlatone, Inc.

Pacific Monolithics

Cuisinarts, Inc.

Other

Hewlett-packard Company

Leland Stanford Junior University

Trw Limited

Varian Associates, Inc.

Atx Networks Inc.

Allen F Podell

Ky-Hien Do

Todd G Brehmer

Mariama Dadhi Barrie

Robert H Benton

Fazal Ali

Gregory J Pflaum

Ravi Ramachandran

Richard S Davis

A Warren Berg

Philip M Robertson

David M Bloom

Alistair D Black

Todd Loeffelholz

Edward Bryant Stoneham

Bruce C Ogren

Zakhary Bluband

James Richard Kerekes

Terry E McClellan

David E Schomaker

Carl G Sontheimer

Joseph Czyscon

Robert A Marsland

Bernard J Werlau

Carl G Schuster

Sanjay B Moghe

John M Wachsman

Louis F Mueller

Laurence M Markowitz, Deceased

Albert W Berg

Christine L Chow

Harishankar Nagarajan

Mohammad S Shakouri

Andrew Kearns

Kang W Lee

Michael J Surovich

William Deering

A transmission-line network includes first, second, third, and fourth transmission lines. Signal conductors of the first and third transmission lines are connected in series and the signal conductors of the second and fourth transmission lines are connected in series. Signal-return conductors of the first and fourth transmission lines are connected in series. The signal-return conductors of the second and third transmission lines are connected in series. A first resistor may be connected between a junction between the signal conductors of the first and third transmission lines and a junction between the signal conductors of the second and fourth transmission lines. A second resistor may be connected between a junction between the signal-return conductors of the first and fourth transmission lines and a junction between the signal-return conductors of the second and third transmission lines.

Two-way splitter with crossover

A combiner/divider and method of designing a combiner/divider providing a single impedance transformation between a sum port and component ports with a determined insertion-loss variation over a determined operating bandwidth. Preferably the lowest number impedance-transformer sections are included that provide impedance transformation between the sum port and the component ports. A junction network preferably electrically connects a junction-network sum node to each of N junction-network component nodes. The junction-network sum node is connected to the sum port through at least a first impedance-transformer section of the ZT impedance-transformer sections. Each junction-network component node is connected to a respective one of the plurality of component ports through at least a respective second impedance-transformer section of the ZT impedance-transformer sections.

Compact impedance transforming combiner/divider and method of making

A transmission-line assembly provides a transition between more coupled and less coupled transmission lines. The more coupled transmission lines may be configured as a dual stripline, and the less coupled transmission lines may be configured as separate striplines or a dual stripline with reduced coupling. In an intermediate section, the transmission conductors transition between the more coupled and less coupled sections and at least one transmission conductor bends. A grounded shield conductor is coplanar with and edge-coupled to the one transmission conductor and extends along the bend in the one transmission conductor. The shield conductor is not connected to either of the transmission conductors, and overlaps the other transmission conductor when viewed normal to the planes of the transmission conductors, whereby the shield conductor is broadside coupled to the other transmission conductor. Capacitive coupling between the transmission conductors and the shield conductor reduce capacitive coupling between the transmission conductors.

Capacitive shields and methods for coupled transmission lines

In a four-port transmission-line network, a first transmission line is connected to a first port, second and third transmission lines are connected to a first component port, fourth and fifth transmission lines are connected to a second component port, and a sixth transmission line is connected to a fourth port. The transmission lines are connected as baluns to the ports with the unbalanced signal on the port side and the balanced signals interconnecting with others of the transmission lines. In another example, two or more baluns are connected serially. Each balun includes two transmission lines having signal-return conductors connected together at the ends. One end of a signal conductor on the first balun forms a sum port. One end of the signal-return conductors of the second balun forms a difference port, and a capacitor connects the other end of the signal-return conductors to circuit ground.

Divider/combiner-based four-port transmission line networks

First ends of a plurality of sub-networks of an exemplary transmission-line network are connected together electrically in series. First ends of a plurality of transmission lines of one subnetwork are connected together in parallel and second ends are connected together in series. The one sub-network has a first-end impedance value that is different than a second-end impedance value. The second-end impedance value of the one sub-network is different than a second-end impedance value of another sub-network. A respective transmission line connects each sub-network to a common circuit node and a respective resistor interconnects each adjacent pair of the second ends of the sub-networks.

Transformer having series and parallel connected transmission lines

Balun-based four-port transmission-line networks

A power sampler may include a sampling circuit interposed in one leg of a differential-signal circuit. An input balun may convert a single-ended signal from a signal source into a differential signal on first and second differential-signal input ports. An output balun may convert an output differential signal to a single-ended output signal to a signal load. The sampling circuit may include an inductance and a coupling circuit. The inductance may be an inductor and have an impedance higher than a source impedance. The coupling circuit, which may be a balun, is connected to the inductance and outputs a single-ended sample signal having a magnitude proportional to the inductance impedance at the design frequency. A second coupling-circuit output conducts an output differential signal and may be connected to the output balun.

Inductive radio frequency power sampler

A transmission-line-based impedance transformer including first and second couplers, with each coupler including respective pairs of coupled signal conductors. The signal conductors are connected sequentially in series between an input port and an output port and may form a single spiral configuration. A signal conductor of one coupler may be connected in series between the two signal conductors of another coupler. The couplers have characteristic impedances between an input impedance and an output impedance. A signal conductor of a coupler may include first and second conductor portions disposed in respective spaced-apart parallel planes, with the other signal conductor of the coupler disposed physically directly between the conductor portions. A signal conductor in the spiral may be shielded from coupled signal conductors by ground conductors disposed in respective spaced-apart parallel planes on opposite sides of the shielded signal conductor. The first and second couplers may have a shared signal conductor.

Transmission-line-based impedance transformer with coupled sections having a common signal conductor

A transmission-line-based impedance transformer including first and second couplers, with each coupler including respective pairs of coupled signal conductors. The signal conductors are connected sequentially in series between an input port and an output port and may form a single spiral configuration. A signal conductor of one coupler may be connected in series between the two signal conductors of another coupler. The couplers have characteristic impedances between an input impedance and an output impedance. A signal conductor of a coupler may include first and second conductor portions disposed in respective spaced-apart parallel planes, with the other signal conductor of the coupler disposed physically directly between the first and second conductor portions. A transmission-line signal conductor in the spiral may be shielded from coupled signal conductors by ground conductors disposed in respective spaced-apart parallel planes on opposite sides of the shielded signal conductor.

Transmission-line-based impedance transformer with coupled sections

A multilayer coupler may include electromagnetically coupled planar first and second signal conductors that are separated by a gap, extend adjacent each other along a ground plane, and change orientation in a bend. A plate may be positioned along the bend between the ground plane and the signal conductors. The ground plane may have an opening extending along the bend and the plate. A multilayer coupler may include two coupled signal conductors formed in a loop having a four-wire section in which different sections of the two signal conductors overlap in a four-wire section. In a transition region in which the coupler transitions from the four-wire section to a two-wire section, an isolating ground plane may separate the two two-wire sections extending from the four-wire section. A bend in the transition region may include a plate between the two signal conductors and the ground plane.

Multilayer coupler having mode-compensating bend

Multilayer loop coupler having transition region with local ground

A multilayer capacitor may include a capacitor stack having pluralities of first and second plate electrodes connected to respective stack face terminals. Two face terminals on different stack sides are connected to the first plate electrodes. Two different face terminals also on different stack sides are connected to the second plate electrodes. Respective base conductors connect to the two sets of face terminals for connecting the capacitor to an external circuit. Three face terminals may be connected to the first or second plate electrodes. The base conductors may connect to the face terminals at the same relative position of the capacitor stack, at different relative positions of the capacitor stack. A capacitor stack may be positioned with a stack end facing a base substrate. Two multilayer capacitors may be mounted electrically in parallel with one or more lossy elements spanning a gap between the capacitors.

Multilayer capacitors

A coupled-line coupler having a coil in one of the coupled lines may include first and second conductors having at least first and second coupled sections in which the first and second conductors are closely coupled. A coil extending around an axis may be formed in the first conductor. At least a portion of the coil may be between the first and second coupled sections. A first portion of the first conductor may cross over a second portion of the first conductor when viewed along the axis. At least a first capacitor may be connected between a circuit ground and the first conductor at a position of the coil between and spaced from the first and second coupled sections.

Coupler with lumped components

A transmission-line network may include a transmission-line sub-network. The sub-network may include at least first and second transmission lines having respective first ends connected electrically in series relative to a first circuit node and respective second ends connected electrically in parallel relative to a second circuit node. A third transmission line may have a first end directly connected to the second circuit node and a second end electrically connected to the second end of the first transmission line. A fourth transmission line may have a first end directly connected to the second circuit node and a second end electrically connected to the second end of the second transmission line. The transmission-line network may further include an impedance assembly disposed relative to the third and fourth transmission lines configured to produce resistance between the second end of the third transmission line and the second end of the fourth transmission line.

Resonance-inhibiting transmission-line networks and junction

A divider may include a first node, a second node, a third node, at least a first divider section, and a first bridging assembly. The first divider section may include associated first and second transmission lines that respectively include first and second conductors that couple the first node to the second and third nodes. The first bridging assembly may include first and second resistors, and third, fourth, fifth, and sixth conductors. First ends of the third and fourth conductors may be respectively connected to the first and second conductors. Second ends of the third and fourth conductors may be grounded. The fifth and sixth conductors may be connected together and their opposite ends may be respectively terminated to ground by the first and second resistors. The third and fifth conductors may be closely inductively mutually coupled, and the fourth and sixth conductors may be closely inductively mutually coupled.

Divider/combiner with bridging coupled section

Growing community of inventors

Palo Alto, CA, United States of America

Allen F Podell