Patents in Class 333/133

Matches 1 - 50 out of 351

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Match	Document	Document Title
1	7639103	Piezoelectric filter, antenna duplexer, and communications apparatus employing piezoelectric resonator A piezoelectric filter comprises a substrate and a plurality of piezoelectric resonators provided on the same substrate. Each piezoelectric resonator comprises a cavity formed in the substrate, a...
2	7629866	Method for manufacturing surface acoustic wave device and surface acoustic wave device A method for manufacturing a surface acoustic wave filter device includes a step of forming grooves in one principal surface of a piezoelectric substrate, a step of embedding a metallic film in the...
3	7629864	Filter including acoustic wave filters connected in parallel A filter includes: a first acoustic wave filter having acoustic wave filters cascaded, an input stage of the acoustic wave filters including a first multimode filter; a second acoustic wave filter...
4	7629863	Filter and duplexer A duplexer includes: a first filter that is connected to a common terminal and a first terminal, and includes a first series-arm resonator; a second filter that is connected to the common terminal...
5	7623007	Device including piezoelectric thin film and a support having a vertical cross-section with a curvature An acoustic resonator includes a substrate, a support section provided on the substrate, a lower electrode provided on the support section, a piezoelectric body provided on the lower electrode, and...
6	7619494	Ladder type piezoelectric filter In a ladder-type piezoelectric filter, the attenuation in the stop bands on a low frequency side and a high frequency side are increased while the pass band is widened. The ladder-type...
7	7619491	Elastic wave duplexer An elastic wave duplexer includes a transmission filter chip and a reception filter chip each defined by an elastic wave filter chip and flip-chip bonded to a laminated board. A coil-shaped line...
8	7612634	High frequency module utilizing a plurality of parallel signal paths A high frequency module incorporates a layered substrate. The layered substrate has a bottom surface and a top surface. Terminals are disposed on the bottom surface. SAW filters and inductors are...
9	7609129	Surface acoustic wave device, surface acoustic wave apparatus, and communications equipment A second substrate 21 composed of a material having a lower dielectric constant than that of a piezoelectric substrate 2 having a transmission-side filter region 12 and a receiving-side...
10	7602264	Filter device, multiband filter, duplexer and communications equipment using the filter device A filter device includes a circuit board having a pattern electrode; a substrate having a filter to which a signal line for inputting or outputting a signal and a reference potential line having a...
11	7602263	Branching filter package A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing...
12	7602262	Elastic wave device and manufacturing method of the same An elastic wave device formed by bonding at least two surface acoustic wave devices by filling a resin therebetween is disclosed. Each of surface acoustic wave (SAW) devices includes a substrate; a...
13	7588960	Nanotube device structure and methods of fabrication Nanotube device structures and methods of fabrication. A method of making a nanotube switching element includes forming a first structure having at a first output electrode; forming second...
14	7586389	Impedance transformation and filter using bulk acoustic wave technology A system, apparatus and method for providing filtering functionality and impedance transformation within a BAW resonator network are disclosed. In particular, a BAW resonator network is designed to...
15	7586388	Filter module and communication apparatus In a filter module, a common input/output portion of a switch circuit is set as a first port. A first filter arranged to pass a signal in a first frequency band is connected between a first...
16	7583161	Surface acoustic wave device and boundary acoustic wave device A piezoelectric substrate is joined to a cover with a support layer disposed therebetween and with a space maintained therebetween. A transmission surface acoustic wave filter and a reception...
17	7583936	Circuit with reduced insertion loss and component comprising one such circuit An electrical circuit has at least two parallel signal paths connected to one another on the antenna side and for which a band reject filter corresponding to the transmission range is implemented...
18	7579927	Duplexer A duplexer includes: a transmission filter and a reception filter that have different band center frequencies from each other; a phase matching circuit that performs phase matching on the...
19	7579931	Surface acoustic wave filter element, surface acoustic wave filter and communication device using the same A surface acoustic wave filter element has a piezoelectric substrate; and a plurality of inter-digital transducer (IDT) electrodes formed on the piezoelectric substrate, wherein at least one...
20	7579926	FBAR band pass filter, duplexer having the filter and methods for manufacturing the same A duplexer including an FBAR band pass filter that can be easily embodied in single chip, and a method for manufacturing the same are disclosed. The duplexer of a mobile communication device...
21	7579928	Surface acoustic wave device and communication device A surface acoustic wave device includes front stage and rear stage surface acoustic wave elements, a signal wiring connecting between the front stage and rear stage surface acoustic wave elements,...
22	7573354	Duplexer and ladder type filter A duplexer includes an antenna terminal, a first filter connected to the antenna terminal, and a second filter connected to the antenna terminal. At least one of the first filter and the second...
23	7567148	Frequency shunt A frequency separating unit includes an antenna unit, a first signal path, a second signal path, first band-pass filter in the first signal path, a second band-pass filter in the second signal...
24	7565116	High frequency module A high frequency module comprises a layered substrate. Inside the layered substrate, a reception diplexer for processing reception signals and a transmission diplexer for processing transmission...
25	7561005	High frequency front-end module and duplexer A high frequency front-end module includes an antenna terminal ANT, a diplexer, high frequency switches, LC filters, and SAW duplexers. The SAW duplexer is defined by SAW filters and high-pass...
26	7554422	Filter module using piezoelectric resonators, duplexer, communication device, and method for fabricating filter module A filter module includes a substrate and a plurality of resonators formed on the substrate and utilizing longitudinal vibration along the thickness of a piezoelectric layer. A plurality of external...
27	7554419	Balanced filter and duplexer A balanced filter includes: a filter that has at least one unbalanced signal terminal; a balun that is a lumped parameter balun that inputs or outputs signals with different phases generated based...
28	7548135	Filter and duplexer A filter includes a filter chip, a laminated portion on which the filter chip is mounted, an input/output terminal provided in the laminated portion, a first U-shaped line pattern provided on a...
29	7535319	Band pass filter and duplexer having the same A band pass filter for improving filtering, realizing high integration, and reducing manufacturing costs, and a duplexer having the band pass filter. The band pass filter comprises a first resonant...
30	7535324	Piezoelectric resonator structure and method for manufacturing a coupled resonator device A method for manufacturing a coupled resonator device includes forming a first part of a plurality of layers, trimming an exposed layer of the first part and forming a remaining part of the...
31	7532090	Acoustic wave filter device and duplexer In an acoustic wave filter device, first and second longitudinally coupled resonator SAW filters are provided on a piezoelectric substrate. The first and second longitudinally coupled resonator SAW...
32	7522894	Radio receiving apparatus A radio receiving apparatus includes two receiving antennas, two upstream RF amplifiers, a SAW filter having two input IDTs and an output IDT, a downstream RF amplifier, and a detector circuit. The...
33	7522016	Tunable surface acoustic wave resonators A tunable SAW resonator circuit is disclosed. The tunable SAW resonator circuit includes a SAW resonator having a Q, a resistor coupled to the SAW resonator to reduce the Q, and a tuning component...
34	7518470	Surface acoustic wave element, surface acoustic wave device and communication device including the same A surface acoustic wave element 1 comprises a piezoelectric substrate 19 , IDT electrodes 3, 4, 5 of an odd number not less than three formed along a propagation direction of surface acoustic...
35	7515018	Acoustic resonator An acoustic resonator is described, the acoustic resonator comprising a stack of a first and a second piezoelectric body, wherein said first and second piezoelectric bodies have substantially the...
36	7515017	Surface acoustic wave device utilizing a terminal routing pattern A surface acoustic wave device having a surface acoustic wave filter having a comb-shaped electrode pattern formed on a piezoelectric element, electrode terminals for inputting and outputting of...
37	7511595	Multi-band filter module and method of fabricating the same A multi-band filter module and a method of fabricating the same are disclosed. At least one upper filter is deposited on an upper surface of a first substrate. The first packaging substrate...
38	7498902	Balanced/unbalanced filter module and communication apparatus A balanced/unbalanced filter module includes a switch including a first port that inputs and outputs unbalanced signals in a first frequency band, a second port that inputs and outputs unbalanced...
39	7498900	System on chip structure comprising air cavity for isolating elements, duplexer, and duplexer fabrication method thereof A duplexer which prevents effects between transmitter and receiver filters. The duplexer include a substrate, a transmitter filter fabricated in a predetermined first area on a surface of the...
40	7498899	Duplexer with filters including film bulk acoustic resonators A duplexer includes: first and second filters including film bulk acoustic resonators (FBARs) arranged in a ladder form; first and second integrated-passive devices (IPDs) provided between a common...
41	7498901	Filter device and transmitter-receiver utilizing beam-structured micro-resonators A filter device configured with a plurality of micro-resonators and having a wide specific bandwidth. The filter device is configured as having a plurality of beam-structured, micro-resonators ( 15...
42	7498898	Surface acoustic wave filter, and saw duplexer A plurality of surface acoustic wave resonators including a comb electrode and a grating reflector are coupled on a piezoelectric substrate. Dielectric film is formed on the surface of at least one...
43	7489210	Surface acoustic wave filter and transmitter-receiver In order to realize low impedance of input and output by introducing unbalanced balanced input/output and reduction of the number of parts, and further in order to improve the...
44	7486158	Branching filter A branching filter suppresses the effect of a ripple at a high frequency side of a first band-pass filter having a relatively low frequency passband and achieves sufficient pass band widths of the...
45	7479845	Branching filter package A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing...
46	7479848	Acoustic wave filter device In an acoustic wave filter device, a first filter circuit portion includes a first inductor provided in a series arm that couples an input terminal and an output terminal is serially connected to a...
47	7479847	Filter using piezoelectric resonator A series piezoelectric resonator 11 is connected in series between an input terminal 15 a and an output terminal 15 b . A first electrode of a parallel piezoelectric resonator 12 a is...
48	7479846	Duplexer A duplexer that includes: a transmission filter and a reception filter that are connected to a common terminal; and a reactance circuit that is connected to at least one of the transmission filter...
49	7477115	Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezoelectric resonator A piezoeletric resonator includes: a substrate; a lower electrode formed on or above the substrate; a piezoeletric body formed on or above the lower electrode; an upper electrode formed on or above...
50	7474174	Ladder-type thin-film bulk acoustic wave filter A ladder filter comprising a plurality of bulk acoustic wave resonators, the resonators comprising a plurality of series resonators series resonators in series between an input terminal and an...

Matches 1 - 50 out of 351

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