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RE40890 |
Temperature compensated high power bandpass filter
A bandpass filter makes use of at least one waveguide cavity that is thermally compensated to minimize drift of a resonant frequency of the cavity with thermal expansion of cavity components. The...
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7573430 |
Microwave components
The present invention relates to a microwave component with an at least partially enclosed cavity, such as a microwave filter, a waveguide or a horn antenna, comprising an outer support structure...
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7551042 |
Microwave pulse compressor using switched oversized waveguide resonator
A microwave pulse compressor has an elongated, cross-sectionally oversized waveguide resonator for decreasing the attenuation of the resonator, thereby increasing the resonator's Q O The increased...
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7538640 |
Waveguide and attenuation pole waveguide bandpass filter
A waveguide and an attenuation pole waveguide bandpass filter with a simple structure without any additional structure such as a negative cross coupling between resonators. The attenuation pole...
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7468641 |
Microwave bandstop filter for an output multiplexer
A microwave bandstop filter comprises a waveguide segment of cross-section that presents longitudinal variation of sinusoidal type modulated by an amplitude function that is continuous, the period...
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7439829 |
RF module
The present invention provides an RF module capable of converting electromagnetic waves in the TE mode to balanced electromagnetic waves in the TEM mode without adjustment and outputting the...
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7397331 |
Coupling structure, resonator excitation structure and filter for coplanar-waveguide circuit
A coupling structure for coupling to a circuit portion ( 6 ) in a coplanar-waveguide circuit ( 1 ) having ground conductors ( 2, 3 ) at both sides is disclosed. A signal input/output line ( 4 ) is...
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7391287 |
Bandpass filter with pseudo-elliptic response
The invention proposes an H-plane filter with inductive irises which exhibits a quasi-elliptic response while retaining the same compactness as a filter having a Chebyshev response. The invention...
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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...
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7358834 |
Transmission line voltage controlled nonlinear signal processors
Waveguide nonlinear signal processors include transmission lines defined on a substrate. A plurality of varactors or pairs of varactors are situated along the transmission line and are in...
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7355496 |
Finline type microwave band-pass filter
The present invention relates to a FINLINE type microwave band-pass filter comprising a waveguide provided with an insulating substrate placed in an E plane of the guide and comprising on at least...
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7332988 |
Frequency filter and its manufacturing process
The invention relates to a frequency filter including a structure with, on one face, two extreme evanescent areas and at least one wave guide area between the evanescent areas. The at least one...
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7323954 |
Dielectric ceramic filter with metal guide-can
A dielectric ceramic filter with a metal guide can is provided. The dielectric ceramic filter includes a metal guide can coupled to and projecting from both input/output ends of the dielectric...
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7304554 |
U-shaped microwave and millimeter wave resonator filter
A filter including a body on which a waveguide groove, whose one surface is open, is formed in a U-shape and a plurarity of inductive resonant windows are provided along a longitudinal direction of...
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7298232 |
Low-loss filter and frequency multiplexer
A waveguide filter with a signal input port at a first end and a signal output port at a second end includes a dielectric core of moldable material where the outer surface of its periphery has a...
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7292123 |
Waveguide E-plane RF bandpass filter with pseudo-elliptic response
The invention relates to RF bandpass filters with pseudo-elliptic response. In a filter comprising a dielectric substrate placed in E position in a rectangular waveguide and comprising inserts on...
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7280011 |
Waveguide and method of manufacture
A hollow waveguide ( 1 ) has a wall ( 3 ) having plural pegs ( 16 ) thereon. The pegs ( 16 ) which project into the hollow interior of the waveguide ( 1 ) such that the waveguide ( 1 ) propagates...
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7274273 |
Dielectric resonator device, dielectric filter, duplexer, and high-frequency communication apparatus
Electrodes ( 2 ) and ( 3 ) are formed on the front face ( 1 A) and the rear face ( 1 B) of a dielectric substrate ( 1 ). Fan-shaped apertures ( 4 A) and ( 4 B) forming a resonator ( 4 ) are formed...
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7263760 |
Method for making a slow-wave ridge waveguide structure
A method of fabricating a ridge waveguide filter having a slow-wave structure. The ridge waveguide is formed of a conductive sidewall-from metallic materials and may be in the form of a hollow...
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7250835 |
Waveguide band-stop filter
A filter includes a waveguide with at least one impedance structure with a resonant frequency. The impedance structure is positioned in the waveguide to reflect signals at the resonant frequency....
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7170373 |
Dielectric waveguide filter
A conductive layer is formed on each of the upper and lower surfaces of a dielectric substrate, and the two conductive layers are connected by rows of via-holes that are formed which a spacing that...
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7148766 |
Transition between a microstrip circuit and a waveguide including a band stop filter and outside transmission reception unit incorporating the transition
The invention proposes a transition between a microstrip technology circuit and a waveguide, the waveguide being furnished with a probe linked electrically to the microstrip circuit. The transition...
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7142074 |
Multilayer waveguide filter employing via metals
A waveguide filter is disclosed. The waveguide filter includes a lower conductive layer; a plurality of dielectric layers stacked on the lower conductive layer; an upper conductive layer formed on...
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7132909 |
Microwave waveguide
A microwave component has a cavity including a plurality of geometrically shaped elements therein wherein the shape profile and position of the elements in relation to the cavity act to define the...
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7132905 |
Input/output coupling structure for dielectric waveguide having conductive coupling patterns separated by a spacer
Disclosed is an input/output coupling structure for coupling a printed circuit board with a dielectric waveguide having a dielectric body and a conductive film covering the dielectric body. The...
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7088060 |
Electron tube for communication
An electron tube for communication is provided with an output waveguide that is directly coupled to an outlet port of a RF (Radio Frequency) wave signal, and at least one of a low-pass filter, a...
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7068129 |
Tunable waveguide filter
A tunable filter includes a waveguide with at least one resonant cavity and a tunable impedance structure coupled to each resonant cavity. Each resonant cavity has a resonant frequency and its...
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7042316 |
Waveguide dielectric resonator electrically tunable filter
A tunable filter which may include at least one resonator. The at least one resonator may comprise a ring resonator made on a dielectric substrate placed in a waveguide, wherein the waveguide may...
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7042315 |
Device for filtering electromagnetic waves
The present invention relates to a device for filtering electromagnetic waves, consisting of a turret element comprising at least one pair of waveguide filters, each filter operating in a specific...
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7030720 |
Floating microwave filter in a waveguide structure
A floating microwave filter in a waveguide structure comprises filtering elements sandwiched between two foam half-bars that are placed inside a waveguide. The filtering elements are metal features...
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7023302 |
Slow-wave structure for ridge waveguide
A ridge waveguide filter having a slow-wave structure. The ridge waveguide has an elongate hollow tube formed of a conductive sidewall. At least a first part of the conductive sidewall periodically...
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7011725 |
High performance embedded RF filters
Embedded, coupled, shaped waveguide resonators having conductive walls sandwiched between two fired green tape stacks, said conductive walls having apertures therein whose size and location...
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7009470 |
Waveguide-type dielectric filter
Disclosed is a waveguide-type dielectric filter, which comprises a dielectric block, a plurality of resonators formed in the dielectric block, and a coupling portion for adjusting the coupling...
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7009469 |
Compact waveguide filter and method
A compact multiple VSWR element filter in which one or more of the VSWR filter elements is a waveguide bend or a waveguide media transition. Methods are also disclosed.
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6992548 |
RF module and method for arranging through holes in RF module
The present invention is directed to optimize arrangement of through holes and enable electromagnetic waves to be efficiently propagated. A cylindrical waveguide has a dielectric substrate, ground...
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6977566 |
Filter and method of arranging resonators
Provided are a filter and a method of arranging resonators, which enable forming an attenuation pole and thus achieving excellent frequency characteristics. The filter includes a plurality of...
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6956447 |
Directional coupler using non-radiative dielectric waveguide
A dictionary coupler using a non-radiative dielectric waveguide is disclosed. Particularly, a millimeter wave band non-radiative dielectric waveguide directional coupler using a multiple-hole...
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6927653 |
Dielectric waveguide type filter and branching filter
A cutoff waveguide path is provided in a part of a dielectric waveguide comprising a pair of main conductive layers formed on an upper and a lower surfaces of a dielectric and groups of conductive...
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6927652 |
Canonical general response bandpass microwave filter
A microwave filter including a plurality of resonator cavities ( 1, 10 ) arranged in more than two adjacent rows and more than two adjacent columns; wherein each resonator cavity is coupled with at...
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6917266 |
Microwave waveguide
A microwave component has a cavity including a plurality of geometrically shaped elements therein wherein the shape profile and position of the elements in relation to the cavity act to define the...
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6879226 |
Waveguide quardruple mode microwave filter having zero transmission
The invention relates to a quadruple mode microwave filter having coupled cavities with a plurality of transmission zeros, said filter comprising at least one rectangular parallelepiped-shaped...
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6876277 |
E-plane filter and a method of forming an E-plane filter
An E-plane filter comprises a housing having a waveguide filter channel and a septum defining a plurality of couplers spaced apart along the length of the filter channel, thereby forming a...
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6809615 |
Band-pass filter and communication apparatus
A band-pass filter includes electrodes formed on both upper and lower surfaces of a dielectric plate, and a plurality of non-electrode portions on the upper and lower surfaces of the dielectric...
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6801789 |
Multiple-beam antenna
A multiple-beam antenna is provided which is capable of receiving radio waves from two satellites by one down converter and readily adjusting a polarization displacement due to a locational...
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6791438 |
Radio frequency module and method for manufacturing the same
A rectangular penetration hole is formed opening in the opposite two main surfaces of a first dielectric substrate. Conductors for grounding are respectively formed on the main surfaces, to cover...
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6750735 |
Waveguide polarizer
The waveguide polarizer is a device for microwave antenna systems consisting of a waveguide section, with circular cross-section, being equipped with two terminal flanges for connection to other...
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6703911 |
Very high frequency (VHF) sharp tuned elliptic filter and method
A sharp-cutoff VHF elliptic filter includes a folded signal path and internally coupled feedback in a conductive enclosure. Sized for the power requirements of commercial television broadcast...
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6677837 |
Dielectric waveguide filter and mounting structure thereof
The present invention provides a dielectric waveguide filter comprising a plurality of dielectric waveguide resonators in the form of rectangular parallelepiped-shaped blocks aligned as a single...
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6657521 |
Microwave waveguide filter having rectangular cavities, and method for its fabrication
A microwave waveguide filter includes a main-line cavity structure with a group of at least two rectangular main-line cavities arrayed along a main propagation path and including a first main-line...
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6657520 |
Waveguide filter
An E-plane waveguide is provided comprising a housing having opposed walls defining a waveguide channel. The waveguide includes at least two elements spaced apart in a direction along the waveguide...
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