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| Number | Title | Issue Date |
| 7385460 | Combined electrostatic and optical waveguide based microfluidic chip systems and methods A system for detecting interactions between charged targets and analytes. The system includes a fluid channel, and a waveguide associated with the fluid channel. A detection region is associated with the waveguide, and a biasing element is operatively coupled to the... | 06/10/2008 |
| 7382215 | Image guide coupler switch In one implementation, a method is provided for an image guide coupler. The method includes controlling a coupling between adjacent waveguides of a propagating wave by controlling a coupling through at least one field pick up probe positioned next to the adjacent wa... | 06/03/2008 |
| 7330087 | Microwave switch housing assembly A microwave switch housing assembly for operation in a selected frequency range. The housing assembly includes a housing having ports, a rotor containing at least one waveguide passage, and power absorbing material positioned either in the housing or in the rotor. P... | 02/12/2008 |
| 7292125 | MEMS based RF components and a method of construction thereof A three dimensional waveguide is integrated with a MEMS structure to control a signal in various RF components. The components include switches, variable capacitors, filters and phase shifters. A controller controls movement of the MEMS structure to control a signal... | 11/06/2007 |
| 7288944 | Evanescent waveguide apparatus and method for measurement of dielectric constant A dielectric constant waveguide measuring apparatus preferably comprises a rectangular waveguide aperture on each end with a width a and height b. The waveguide frame is preferably split to permit the waveguide to be opened for insertion of the unknown material into... | 10/30/2007 |
| 7193488 | R switch An R switch with a stator and a rotor with three paths wherein a central, straight interconnection is constructed as step transformers and formed bar-like by recesses incorporated laterally in the in the steps of the transformers in order to lower the low frequency ... | 03/20/2007 |
| 7109823 | Image guide coupler switch In one embodiment, an image guide coupler switch is provided having a dielectric image guide coupler with a coupling control circuit. In this embodiment the coupling control circuit has at least one field pick up probe which extends at least part way across the imag... | 09/19/2006 |
| 6992549 | Shutter switch for millimeter wave beams and method for switching A shutter switch is disclosed and placed in the path of a millimeter beam and is either opaque or transparent to the beam. The shutter switch comprises a number of waveguides placed adjacent to one another to intercept the beam, a portion of the beam passing through... | 01/31/2006 |
| 6917260 | Waveguide directional filter A waveguide directional filter for combining multiple high power UHF television broadcasting transmitters on to a common antenna. The directional filter arrangement includes an input waveguide, an output waveguide and an interconnected cascade assembly of two or mor... | 07/12/2005 |
| 6911941 | Dielectric substrate with selectively controlled effective permittivity and loss tangent A substrate (300) for an RF device includes a plurality of layers (102) of dielectric material cofired in a stack. The plurality of layers (102) is formed from a material having a permittivity. Selected ones of the layers (102) have a pat... | 06/28/2005 |
| 6903624 | Apparatus and method for shorting waveguide using a pivotable vane structure A center-pivoted, conductive vane equipped with contact-enhancing finger stock on the wiping edges rests during normal operation of a modified waveguide section parallel to and equidistant between the broad faces of the waveguide, where it interacts minimally with R... | 06/07/2005 |
| 6833772 | RF switch using conductive fluid An RF switch (100) which includes a waveguide structure (102) having at least a first (104) and second port (106). The RF switch (100) also includes a dielectric structure defining at least a first cavity (136) disposed at a... | 12/21/2004 |
| 6762661 | Shutter switch for millimeter wave beams and method for switching A shutter switch is disclosed the is placed in the path of a millimeter beam and is either opaque or transparent to the beam. The shutter switch comprises a number of waveguides placed adjacent to one another to intercept the beam, a portion of the beam passing thro... | 07/13/2004 |
| 6670865 | Method and apparatus for low loss high frequency transmission A high frequency receiver is provided with improved insertion loss and noise factor. The receiver uses a low loss input stage and interstage noise matching block. The input stage and interstage noise matching block utilize a suspended substrate matching c... | 12/30/2003 |
| 6667671 | Waveguide switch A waveguide switch having a stator and an electrically conducting movable element, the stator having waveguide paths between waveguide terminal pairs, each path being switchable to conducting or nonconducting with the help of the movable element for high-... | 12/23/2003 |
| 6489858 | H-plane offset transitions in a switchable waveguide An apparatus and method for switching waveguides between T switch and a bypass waveguide. The apparatus comprises a housing having a first, second and third housing port and a waveguide rotor, having a first and second rotary position. The waveguide rotor... | 12/03/2002 |
| 6483396 | Microwave system with redundant processing devices and passive switching A redundant microwave system operable to process a microwave signal propagating in a microwave cavity includes a microwave cavity and two microwave processing devices. Each microwave processing device has a transmissive impedance when it is on and a refle... | 11/19/2002 |
| 6448869 | E-plane offset transitions in a switchable waveguide An apparatus and method for switching waveguides between a junction waveguide and a bypass waveguide among a plurality of housing ports. The apparatus comprises a housing having a first, second and third housing port and a waveguide rotor, having a first ... | 09/10/2002 |
| 6359530 | Switching waveguide directional coupler and method A switchable directional coupler in which a three position switch partitions the coupler into three distinct coupling paths among its four ports according to the status of a pair of quadrature phase input signals of amplitudes A and B. In one position wit... | 03/19/2002 |
| 6252473 | Polyhedral-shaped redundant coaxial switch A three dimensional microwave switch having a plurality of waveguide transmission lines configured in an octahedral shape having microwave I/O ports at the corners. Individual actuators selectively move respective reeds within the waveguide transmission l... | 06/26/2001 |
| 6218912 | Microwave switch with grooves for isolation of the passages The microwave switch includes a housing (1) and a rotor (2) having a rotor axis (A). The rotor (2) includes respective plate-shaped parts (10,20) having corresponding ring-shaped outer surfaces (OS, OS') and walls (15 to 18) extending between the plate-sh... | 04/17/2001 |
| 5973577 | Microwave switch A microwave switch having a switch housing with side walls in which waveguide connections are arranged; a switch rotor rotatably arranged in the switch housing; a drive means arranged on the switch housing with a shaft for providing a moment for rotating ... | 10/26/1999 |
| 5936482 | Three dimensional polyhedral-shaped microwave switches A 3D microwave switch having a plurality of waveguide transmission lines configured in a polyhedron and with I/O microwave ports at the corners. An actuator selectively moves respective reeds in the waveguide transmission lines between a signal-attenuatin... | 08/10/1999 |
| 5838218 | Waveguide switch A waveguide switch is provided in which energy such as ultrasonic optical, electromagnetic or infrared waves travel in a first waveguide having fixed length formed in a first member connected to a second member having multiple waveguides of varying length... | 11/17/1998 |
| 5666095 | High power waveguide valve A high power waveguide valve capable of selectively transmitting or sealing the high power without causing its breakdown during a high power operation is disclosed. The inventive high power waveguide valve includes a vacuum chamber, a U-shaped waveguide b... | 09/09/1997 |
| 5635944 | Multi-band antenna feed with switchably shared I/O port A single integrated antenna feed transmits and receives electromagnetic waves in the C, X, and Ku frequency bands. This antenna feed includes an inner metal tube which lies along a central axis, and an outer metal tube which surrounds and is coaxial with ... | 06/03/1997 |
| 5583469 | Dual frequency waveguide switch A dual frequency waveguide switch passes electromagnetic waves in the X-band along one route, and passes electromagnetic waves in the Ku-band along a different route. This switch includes a housing which has first, second, and third openings for the elect... | 12/10/1996 |
| 5446464 | Transceiver module A high frequency transceiver includes a transmit/receive switch which is coupled to a transmission path and to a receive path of the module. The transmit/receive switch includes a 3 dB directional coupler having first, second and third ports, and a decoup... | 08/29/1995 |
| 5347243 | Non-contacting waveguide "T" switch A non-contacting waveguide "T" switch (10) is provided including a stator (12), a rotor (14) mounted for rotation relative to the stator, and a coaxial conductor (64) located at the axis of the rotor for carrying a coaxial transmission. The stator (12) ha... | 09/13/1994 |
| 5206610 | Transfer device for combining and switching microwave signal using a rotary waveguide switching structure A transfer device for selectively combining and switching microwave signals between selective ports in a housing in which is a cylindrical rotor. In a lower portion of the rotor is a first passage having three arms each of which terminates at one of the p... | 04/27/1993 |
| 5155456 | Microwave switch arrangement A microwave switch arrangement for the selective connection of n input lines with n+ a output lines including m microwave switches, where mࣙn, each including a rotor and a stator with at least two waveguide passages in the rotor and waveguide switch inp... | 10/13/1992 |
| 5053732 | Waveguide switching system comprising a single stator and a plurality of rotatable waveguide switches therein A waveguide switch assembly having a common stator in which a network of signal paths are provided inserted by rotors operated by individual motors responsive to a digital computer. An interface including a line receiver the input of which is coupled to t... | 10/01/1991 |
| 5039968 | Rotor setting arrangement A system for setting in particular the rotor (2) of a coaxial or waveguide switch in n possible locking positions S1, S2, S3, . . . has an axially staggered drive on one side and on the opposite side a locking means (6, 7,... | 08/13/1991 |
| 5012292 | Device for setting the rotor of a rotary switch Device for setting the rotor of a rotary switch in one of three possible switching positions (positions 1 to 3). Such rotary switches can be for example wave guide or coaxial switches. The excitation of windings in this device for a rotary direction is ef... | 04/30/1991 |
| 4967170 | Rotary waveguide switch having arcuate waveguides realized by planar faces A waveguide switch with four outputs or inputs (A, B, C, D) normally has one rotor (2) with three passages (3, 4, 5) with which, as appropriate, two waveguide connections can be effected in specific rotor positions. In two switching positions only the cen... | 10/30/1990 |
| 4945320 | Microwave switch having at least two switching positions A waveguide switch selectively connects at least one coaxial input line with at least one of two output lines of which at least one is a coaxial line. The waveguide switch includes a rotor having at least one rectangular waveguide passage which has a heig... | 07/31/1990 |
| 4908589 | Dielectrically loaded waveguide switch A dielectrically loaded waveguide switch is disclosed which provides high power handling capability, small size and low weight. The invention includes first and second dielectrically loaded waveguides selectively connected by a switch. In a specific embod... | 03/13/1990 |
| 4891613 | Transfer device for combining, dividing, and switching microwave signals This microwave transfer device is a hollow body having an internal cavity and lateral input and output openings communicating with the cavity. A post in the cavity divides it into passages extending between input and output openings for passing microwave ... | 01/02/1990 |
| 4780692 | Cableless switching element for waveguide having low loss and fast switching speed An improved switching arrangement 10 for waveguide is disclosed which comprises, in combination, a coaxial switch 12 and a unified, multi-port, waveguide interface 14. The coaxial switch 12 has coaxial connectors of a first type (12a, 12b, 12c) mounted in... | 10/25/1988 |
| 4761622 | Waveguide switching apparatus Waveguide switching apparatus includes a stator and a rotor arranged to rotate relative to it. The rotor includes passages therethrough arranged to make connections between channels in the stator depending on the relative position of the rotor and stator.... | 08/02/1988 |
