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7619495 |
Bandpass filter, electronic device including said bandpass filter, and method of producing a bandpass filter
The bandpass filter comprises transmission line comprising a conductor strip ( 2 ), and, in said transmission line, at least one bandpass filter cell, comprising at least one split-rings resonator...
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7616080 |
Bandpass filter
A bandpass filter (BPF) configured in 3-D structures for filtering signals of ultra wide bands is disclosed, the BPF comprising sequentially stacked first to fourth dielectric substrates, wherein...
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7610072 |
Superconductive stripline filter utilizing one or more inter-resonator coupling members
An inter-resonator coupling scheme for a filter is disclosed. An inter-resonator coupling member is located between successive resonators in the filter. By adjusting the length and/or the proximity...
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7592885 |
Stacked dielectric band-pass filter having a wider passband
A stacked dielectric band-pass filter is disclosed, which enables widening of a passband to a side of a high band of 8 GHz or more. Within a stacked dielectric block, a pair of first λ/4 resonator...
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7583165 |
High Q cavity resonators for microelectronics
A cavity resonator is provided which includes a shielded enclosure enclosing a volume and a unitary conductor disposed within the volume, the unitary conductor having a first inductor portion and a...
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7576628 |
Low-pass filter
A low-pass filter ( 10 ) is provided. The low-pass filter includes an input part ( 100 ), an output part ( 120 ), a high impedance part ( 140 ), a first low impedance part ( 160 ), and a second low...
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7573355 |
Integrated bandpass/bandstop coupled line filter
An apparatus and method for attenuating selected frequency bands in a microstrip filter having a plurality of microstrip resonators. The filter comprises plural resonators, a first of the plural...
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7567152 |
Passive part
A dielectric substrate includes a filter unit, a non-balance/balance conversion unit, and a connection unit for electrically connecting the filter unit to the non-balance/balance conversion unit...
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7567143 |
Balanced-unbalanced transformation device and method for manufacturing balanced-unbalanced transformation device
A balanced-unbalanced transformation device includes a plate-like dielectric substrate having a ground electrode and a plurality of major surface electrodes formed thereon. Two of the major surface...
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7561012 |
Electronic device and filter
A pair of balanced terminals is connected to a pair of interdigital-coupled quarter-wave resonators in an electronic device. This electronic device has a first resonance mode that resonates at a...
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7558608 |
Superconducting device, fabrication method thereof, and filter adjusting method
A superconducting device comprises a dielectric substrate, and a plane-figure type resonator pattern made of a superconductive material and formed on a first face of the dielectric substrate. The...
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7551046 |
Band pass filter
A band pass filter ( 10 ) mounted on a base plate ( 20 ) includes a loop-step resonator ( 12 ), an input portion ( 100 ), and an output portion ( 150 ). The input portion is electronically...
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7551045 |
Dual channel band-pass filter
A dual channel band-pass filter ( 10 ) includes an input portion ( 100 ), a first resonator ( 140 ), a second resonator ( 160 ), and an output portion ( 120 ). The input portion is used for...
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7548141 |
High frequency filter
A high frequency filter incorporates: an unbalanced input/output terminal; two balanced input/output terminals; two resonators respectively provided between the unbalanced input/output terminal and...
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7541896 |
Stacked resonator and filter
A stacked resonator and a filter are provided which are capable of achieving miniaturization and minimum loss, and also capable of transmitting a balanced signal with superior balance...
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7541888 |
Dual band coupled-line balanced-to-unbalanced bandpass filter
A dual band balun filter that includes a first coupled-line section pair provided with a first terminal; a second coupled-line section pair configured to be connected to the first coupled-line...
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7538641 |
Fractal and space-filling transmission lines, resonators, filters and passive network elements
A high frequency electromagnetic circuit is disclosed as being patterned on a metallic or superconducting film on top of a dielectric in a plurality of configurations. A part of the circuit such as...
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7538639 |
Low-pass filter
A filter includes an input portion, a low-impedance transmission portion, a high-impedance transmission portion, and an output portion. The input portion receives electromagnetic signals. The...
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7535313 |
Balun
A balun includes an input line for receiving an unbalanced signal, an output line for receiving the unbalanced signal from the input line and outputting a balanced signal, and a ground. The input...
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7532918 |
Superconductive filter having U-type microstrip resonators with longer and shorter parallel sides
The present invention discloses a U-type superconductive microstrip resonator and a filter corresponding to the same. The U-type superconductive microstrip resonator is an asymmetric U-type...
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7532092 |
Grounding strategy for filter on planar substrate
The invention provides a grounding strategy for electronic components. In particular, the present provides ground connections in thin-film electronic components by connecting one group of one or...
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7528687 |
Filtering device and circuit module
A filtering device is disclosed that can be made compact and has wide-band band-pass characteristics. The filtering device includes a first filtering unit that is composed of a distributed constant...
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7528686 |
Tunable filter utilizing a conductive grid
A tunable filter includes a first resonator; a second resonator; and, a conductive grid assembly electrically coupled to the first and second resonators and coupled to ground. The conductive grid...
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7525401 |
Stacked filter
A stacked filter includes an array of resonant sections, the resonant sections adjacent each other being electromagnetically coupled, a first resonator electromagnetically coupled to the resonant...
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7522022 |
Planar filter, semiconductor device and radio unit
A planar filter has first and second U-shaped open transmission line resonators ( 103, 105 ) and a crank-shaped open transmission line resonator ( 104 ), so that it is possible to decrease an area...
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7518472 |
Transmission line connecting structure and transmission/reception device
A transmission line having a slot line with a slot formed on a front surface electrode on a dielectric substrate, and two such slot lines are positioned with the front surface electrodes separated...
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7508287 |
Band-pass filter
The present invention provides a band-pass filter having: a first substrate; a second substrate; an input line; an output line; a ground layer; and an electromagnetic wave absorptive layer, the...
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7504913 |
DC block with band-notch characteristic using DGS
A DC block with a band-notch characteristic using a defected ground structure (DGS), includes a pair of coupled lines for being formed parallel to each other on one surface of a dielectric and...
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7495531 |
Filter and radio communication apparatus using the same
A filter contains first and second resonators adjacent to each other in a first direction, each of the first resonator and the second resonator comprising a pair of first microstrip lines formed on...
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7495530 |
Dual-band filter
A dual-band filter ( 10 ) is provided. The dual-band filter includes an input line ( 100 ), a first transmission line ( 140 ), a second transmission line ( 160 ), a third transmission line ( 180 ),...
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7492243 |
Planar circuit, high-frequency circuit device, and transmission and reception apparatus
A planar circuit having a conductive film on either main surface of a substrate. The conductive film on one of the main surfaces is patterned with two-dimensionally and repeatedly arranged unit...
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7489214 |
Low-pass filter
A low-pass filter ( 100 ) for reducing harmonic electromagnetic signals includes an input line ( 120 ), an output line ( 140 ), a transmission line ( 160 ), a first coupling line ( 180 ), and a...
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7479856 |
High-frequency filter using coplanar line resonator
A high-frequency filter includes a substrate; a ground conductor disposed on one main surface of the substrate and having an opening; a center conductor making up a coplanar line resonator together...
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7479850 |
Miniaturised half-wave balun
A miniaturised half-wave balun comprises a single-ended I/O port comprising a first signal carrying terminal for connection to a source impedance and a differential I/O port comprising second and...
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7471173 |
Resonator, filter, nonreciprocal circuit device, and communication apparatus
A dielectric substrate is provided with first and second conductor openings communicating with each other via a first slit, and third and fourth conductor openings communicating with each other via...
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7471166 |
Balanced-to-unbalanced transformer embedded with filter
A balanced-to-unbalanced transformer embedded with a filter, the balanced-to-unbalanced transformer being disposed in a multi-layered substrate and comprising vertically coupled transmission lines...
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7468643 |
Bandpass filter and wireless communications equipment using same
Disclosed is a bandpass filter comprising a first resonator 1 to a sixth resonator 6 having lengths of basically ¼ wavelength, an input section IN connected to an ungrounded end of the first...
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7457651 |
Dual mode filter based on smoothed contour resonators
A planar filter has a planar resonator including a conductive region having smoothed contours and supporting a first resonating mode propagating along a first conductive path and a second...
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7444129 |
Comb-line wireless filter
A comb-line wireless filter ( 5 ) includes an input end ( 505 a ), an output end ( 505 b ), a first transmission line ( 501 b ), a second and third transmission line ( 501 a, 501 c ) each having a...
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7443271 |
Ring filter wideband band pass filter using therewith
In order to provide a band pass filter for high wavelength which has a wideband, small insertion loss and flat passband and obtains steep attenuation, a plurality of ring filters, in which, an...
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7443268 |
Bandpass filter within a multilayered low temperature co-fired ceramic substrate
A compact bandpass filter within a multilayered low temperature co-fired ceramic (LTCC) substrate is provided. Each resonator comprises an inductor and a capacitor connected in parallel. A top...
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7437187 |
Superconductive filter with capacitive patches providing reduced cross-coupling
A resonator of a planar circuit type is provided for receiving a signal from an input end and transmitting a signal to an output end. The resonator includes: (a) a dielectric substrate; (b) a...
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7436274 |
Band-pass filter
A band-pass filter ( 10 ) for reducing harmonic electromagnetic signals includes an input line ( 100 ), an output line ( 120 ), at least one first resonator ( 140 ), and at least one second...
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7432786 |
High frequency filter
A high frequency filter incorporates first to third resonators provided inside a layered substrate. The first and third resonators are adjacent to each other and inductively coupled to each other....
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7432784 |
Noise filter and mounted structure of noise filter
A noise filter has an element body, first to fourth terminal electrodes, and a connection conductor. The first to fourth terminal electrodes are disposed on the exterior of the element body. The...
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7423498 |
Compact multilayer circuit
A compact multilayer signal processing system. In the illustrative embodiment, the system is adapted for use with microwave signals. The system includes a first mechanism for receiving an input...
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7417517 |
Method and apparatus for a communications filter
A method and apparatus for a highpass filter structure using transmission line construction which has multiple output tabs for selection of corner frequencies utilizing a plurality of resonators...
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RE40465 |
Dielectric filter, dielectric duplexer, and communication apparatus
A λ/2 resonator comprises an inner conductor formed hole having an inner conductor with both open-ends, formed therein, and λ/4 resonators comprise inner conductor formed holes having inner...
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7411475 |
Superconductor filter
A superconductor filter comprises a plurality of resonance elements arranged between input-output lines formed on a substrate. Metal conductor sections serving to inhibit the spatial coupling...
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7411474 |
Printed wiring board assembly with self-compensating ground via and current diverting cutout
A multi-layer printed circuit board includes a first conductive layer including at least one conductor pattern and a plated through hole extending into the first conductive layer and intersecting...
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