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| Number | Title | Issue Date |
| 7830224 | Compact Magic-T using microstrip-slotline transitions The design of a compact low-loss Magic-T is described. The planar Magic-T incorporates a compact microstrip-slotline tee junction and small microstrip-slotline transition area to reduce slotline radiation. The Magic-T produces broadband in-phase and out-of-phase pow... | 11/09/2010 |
| 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 |
| 7369011 | High order mode electromagnetic wave coupler and coupling method using proportional distributing waves The high order mode electromagnetic wave coupler and coupling method uses one or more Y-shaped bifurcated waveguides to divide the wave to one or more order, so as to divide the target electromagnetic wave proportionally into equal shares. The waveguide is used to i... | 05/06/2008 |
| 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 |
| 7221221 | Power amplifier with pre-distorter Amplifier apparatus comprising a power amplifier (4) having an operating frequency in the radio frequency (‘RF’) or microwave or higher ranges and a pre-distorter (2), the characteristics of the power amplifier (4) comprising a distortion fr... | 05/22/2007 |
| 7026888 | Broadband non-directional tap coupler A high power, non-directional tap coupler having low loss and expanded bandwidth using a novel airline coaxial line structure. Each of the main and secondary conductors forms a concentric structure of constant dimension over a substantial length inside a metallic ho... | 04/11/2006 |
| 7002433 | Microwave coupler A high power, TEM mode directional microwave coupler having low loss and expanded bandwidth uses novel thick suspended substrate conductors to provide multi-octave bandwidth performance in a practical package. Each of two center conductors is formed using metal laye... | 02/21/2006 |
| 6847270 | Waveguide group branching filter The waveguide group branching filter according to the present invention is formed by boring out of two metal blocks constituent circuits including a circular-to-square waveguide multistage transformer 1, the branch waveguide polarizer/branching filter 4 | 01/25/2005 |
| 6803838 | Wideband 180 microwave phase switch The invention relates to a wideband 180° microwave phase switch structure, consisting of microwave or millimetric wave elements such as waveguides, microstrips, striplines or coaxial cables, which are connected in such a way that they can produce a structure with a... | 10/12/2004 |
| 6762653 | Microwave power amplifier An amplifier is provided having an electrically conductive structure. The structure has a waveguide network disposed in an inner region thereof. The network has an input section and an output section. The conductive structure has an amplifier input port and amplifie... | 07/13/2004 |
| 6760572 | Method and apparatus for combining two AC waveforms Two fixed-phase-related signals of arbitrary (unequal) magnitude are combined without incurring combining loss by use of a signal reflection technique wherein the higher magnitude signal is phase-synchronously reinforced along its path through the combining system. ... | 07/06/2004 |
| 6496084 | Split ortho-mode transducer with high isolation between ports An ortho-mode transducer has a common port having a longitudinal axis, a single-polarized back port having a longitudinal axis, a transition element connecting the common port and the single-polarized back port, the longitudinal axis of the single-polariz... | 12/17/2002 |
| 5966058 | Aperture-coupled multiplanar magic-T junction The present invention is a compact, multiplanar magic-T junction that generally consists of four planar waveguides and/or planar transmission lines, with at least one planar waveguide or planar transmission line residing in a different circuit layer from ... | 10/12/1999 |
| 5811961 | Amplitude and phase adjustment circuit An amplitude and phase cancellation circuit for modifying or reducing the phase and amplitude of a signal includes a quadrature hybrid having four ports. A first port receives an input signal and a fourth port outputs an output signal derived from the inp... | 09/22/1998 |
| 5428839 | Planar magic-tee double balanced mixer A broad bandwidth double balanced mixer with all circuitry contained on a single MMIC die is disclosed using planar magic tee hybrids to greatly reduce component quantity and die area. The hybrids comprise a Lange coupler followed by a capacitor and a qua... | 06/27/1995 |
| 5412354 | Single layer double ring hybrid magic-tee A magic-tee hybrid network fabricated as a single conductor layer circuit. The network is fabricated from two ring sections, connected together to provide four magic-tee ports, i.e., sum, difference and two input/output ports. The double ring network with... | 05/02/1995 |
| 5392008 | Orthomode transducer with side-port window A dual mode waveguide orthomode transducer has a section of circular waveguide (12) and a transition (16) from circular waveguide to rectangular waveguide disposed coaxially along a longitudinal axis (38). A terminus of the transition (16) opposite the ci... | 02/21/1995 |
| 5303419 | Aperture-coupled line Magic-Tee and mixer formed therefrom In order to reduce size and facilitate incorporation into planar multi-layer microwave integrated circuits, a microwave hybrid, specifically a Magic-Tee, is formed using microstrip circuit elements and aperture coupling. The Magic-Tee comprises a ground p... | 04/12/1994 |
| 5132646 | Coaxial planar magic tee A Coaxial Planar Magic Tee in which the tee portion is positioned inside a ridged waveguide. When used in one application the device also includes a load to dissipate power in an arm thereof.... | 07/21/1992 |
| 5075647 | Planar slot coupled microwave hybrid A symmetrical 180° microwave hybrid is constructed by opening a slot line in a ground plane below a conducting strip disposed on a dielectric substrate, creating a slot coupled conductor. Difference signals propagating on the slot coupled conductor are i... | 12/24/1991 |
| 5063365 | Microwave stripline circuitry A broad band microwave stripline magic tee designed for a center microwave frequency is disclosed. The magic tee includes a pair of 3db quadrature couplers connected in tandem to one another through a 90° differential phase shift circuit. Each of the 3db... | 11/05/1991 |
| 5023576 | Broadband 180 degree hybrid A broadband 180 degree hybrid having lumped or semi-lumped elements is comprised of a network of low and high pass filters. A 180 degree phase differential is obtained by splitting an input signal from a first input. A first portion of the split signal is... | 06/11/1991 |
| 4952895 | Planar airstripline-stripline magic-tee A multilayer, multiconductor stripline magic-tee network is disclosed. The device incorporates a stripline balun that is sandwiched within a double-sided airstrip-line 3-port reactive-tee power divider to produce a matched 4-port magic-tee that is physica... | 08/28/1990 |
| 4749969 | 180° hybrid tee A hybrid ring structure 180° phase shifting apparatus or device capable of taking a single electrical input signal of predetermined frequency, splitting said signal into two isolated independent output signals utilizing engraving upon the substrate on on... | 06/07/1988 |
| 4712046 | Quadrature-coupled microwave electrodeless lamp A re-entrant, low-pressure, electrodeless lamp apparatus includes two identical re-entrant center conductors driven in quadrature, resulting in a matched lamp input impedance in both the off and on states nearly independent of incident microwave power.... | 12/08/1987 |
| 4578652 | Broadband four-port TEM mode 180° printed circuit microwave hybrid A broadband TEM mode four-port hybrid in a single-level microwave circuit in a transmission line medium selected from among the stripline, microstrip, airstrip, etc. media. The device employs coupled strip all-pass filter elements to provide a hybrid wher... | 03/25/1986 |
| 4383227 | Suspended microstrip circuit for the propagation of an odd-wave mode A suspended microstrip circuit having a dielectric substrate arranged in parallel between two parallel metal planes. First and second strip conductors are provided on the substrate, the second strip conductor being in parallel with the first strip conduct... | 05/10/1983 |
| 4366454 | Microwave hybrid phase modulators Microwave phase modulators are described utilizing three or more hybrid junctions, two of which are phase quadrature hybrids each having one pair of conjugate terminals terminated with switching means and each having one of the remaining terminals connect... | 12/28/1982 |
| 4310814 | Transmission line hybrid junction A transmission line hybrid junction which provides a power dividing and combining function between a first port and a pair of ports. In one embodiment it provides a well-matched, high-isolation, three-port, equal-power, equal-phase, power dividing junctio... | 01/12/1982 |
| 4288762 | Wideband 180° hybrid junctions Coaxial, impedance-matched, four-port 180° hybrid junctions for multioctave bandwidth operation include a gap in the outer shields of a port and a stub line at their interface for forming a uniform electric field within the gap. This gap and the intercon... | 09/08/1981 |
| 4223283 | Two into three port phase shifting power divider A microwave power divider is formed of a plurality of input ports (one or two pairs) and a plurality of output ports (one or two sets of three) which deliver three properly phased output signals in response to only one input signal at one input port of a ... | 09/16/1980 |
| 4153994 | Ninety degree phase stepper A 90 degree phase stepper is described comprising a tandem array of three, 3 db hybrid couplers where the first and third couplers are of one variety (either 90 degree or 180 degree couplers) and the second is of the other variety. A pair of variable phas... | 05/15/1979 |
| 3956717 | Hybrid diplexing filter A hybrid diplexing filter for use in CATV systems and the like, having a pair of high pass filters and a pair of low pass filters connected in an electrical bridge circuit with a common port, a high pass port and a low pass port connected at appropriate n... | 05/11/1976 |
| 3955156 | Microwave power divider and magic tee each comprising coplanar and slot transmission lines A planar microwave integrated circuit, including features of slot lines and coplanar lines, for use as a magic tee and a power divider.... | 05/04/1976 |
| 3946339 | Slot line/microstrip hybrid A broadband 180° 3 db hybrid coupler useful in mixing, combining and/or splitting circuits, the hybrid including slot line and microstrip hybrid components disposed on opposite planar surfaces of a dielectric substrate, one of the components having three... | 03/23/1976 |
| 3931599 | Hybrid phase inverter A microwave hybrid junction with two of the four terminal pairs terminated with matched switchable impedances driven by interconnected circuitry such that if one of the impedances is in its high impedance state, the other is always in its low impedance st... | 01/06/1976 |
