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Class Information
Number: 333/133
Name: Wave transmission lines and networks > Plural channel systems > Having branched circuits > For providing frequency separation > Utilizing electromechanical transducer
Description: Subject matter wherein an electrical wave driven mechanical vibrator determines the frequency characteristic of the branched circuit.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
6943645 Surface acoustic wave duplexer and communication apparatus having the same Sep. 13, 2005
6937113 Branching filter package Aug. 30, 2005
6933810 Surface acoustic wave device with lithium tantalate on a sapphire substrate and filter using the same Aug. 23, 2005
6933803 Surface acoustic wave filter, branching filter, and communication apparatus Aug. 23, 2005
6927649 Component working with acoustic waves and having a matching network Aug. 9, 2005
6924715 Band reject filters Aug. 2, 2005
6919777 Surface acoustic wave filter device Jul. 19, 2005
6919778 Duplexer with an impedance matching circuit and an electronic device using the same Jul. 19, 2005
6917138 Method and subsystem for processing signals utilizing a plurality of vibrating micromechanical devices Jul. 12, 2005
6917258 High frequency switch Jul. 12, 2005
6911878 Acoustic wave branching filter having transmitting filter with optimal power handling Jun. 28, 2005
6911708 Duplexer filter having film bulk acoustic resonator and semiconductor package thereof Jun. 28, 2005
6909338 Ladder-type filter, branching filter, and communication device Jun. 21, 2005
6906600 Surface acoustic wave device and branching filter with specified signal terminal locations Jun. 14, 2005
6903626 Surface acoustic wave element and duplexer having the same Jun. 7, 2005
6903631 SAW filter and electronic device including SAW filter Jun. 7, 2005
6897740 Duplexer and composite module having a package with an electroconductive lid electrically connected to a shield May. 24, 2005
6894586 Radial bulk annular resonator using MEMS technology May. 17, 2005
6891449 Antenna duplexer May. 10, 2005
6891450 Surface acoustic wave filter, balanced type filter and communication device May. 10, 2005
6885260 Filter using film bulk acoustic resonator and transmission/reception switch Apr. 26, 2005
6882250 High-frequency device and communication apparatus Apr. 19, 2005
6876273 Front end module Apr. 5, 2005
6873229 In line structure for agitation of fluid dielectrics in RF devices Mar. 29, 2005
6873227 Surface acoustic wave filter, surface acoustic wave device using the filter, and communication device using the filter or the device Mar. 29, 2005
6873226 Edge-reflection surface acoustic wave filter Mar. 29, 2005
6870441 Method for transforming bandpass filters to facilitate their production and resulting devices Mar. 22, 2005
6870440 Saw branching filter with a branching filter circuit formed on the package Mar. 22, 2005
6870442 High-frequency device Mar. 22, 2005
6867667 Piezoelectric filter, communication device, and method for manufacturing communication device Mar. 15, 2005
6861925 Surface acoustic wave filter Mar. 1, 2005
6861924 Duplexer with improved transmission/receiving band separation Mar. 1, 2005
6856213 High frequency composite switch module Feb. 15, 2005
6856187 High frequency switch module Feb. 15, 2005
6853270 Surface acoustic wave filter with split center IDT and specific weighting and communication apparatus Feb. 8, 2005
6828878 Surface acoustic wave device and communication apparatus utilizing a resonator with a dummy electrode Dec. 7, 2004
6819203 Surface acoustic wave filter device Nov. 16, 2004
6809611 Composite filter, antenna duplexer, and communication apparatus Oct. 26, 2004
6801100 Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same Oct. 5, 2004
6798318 Hybrid leaky surface acoustic wave resonator filter Sep. 28, 2004
6791433 Signal processing by means of resonators Sep. 14, 2004
6784765 Multilayer ceramic device Aug. 31, 2004
6781479 Surface acoustic wave duplexer and communication apparatus Aug. 24, 2004
6781478 Longitudinally coupled resonator type surface acoustic wave filter and communication apparatus incorporating the same Aug. 24, 2004
6778038 Piezoelectric resonant filter, duplexer, and method of manufacturing same Aug. 17, 2004
6771144 Surface acoustic wave filter with a threefold mode filter section and a resonator Aug. 3, 2004
6768397 Surface acoustic wave filter with balanced and unbalanced terminals Jul. 27, 2004
6765456 Surface acoustic wave duplexer and portable communication device using the same Jul. 20, 2004
6762657 Longitudinally coupled resonator-type surface acoustic wave filter Jul. 13, 2004
6759925 Radio-frequency hybrid switch module Jul. 6, 2004

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