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Class Information
Number: 333/195
Name: Wave transmission lines and networks > Coupling networks > Electromechanical filter > Using surface acoustic waves > With wave-modifying means (e.g., reflectors, resonators, diffractors, multistrip couplers, etc.)
Description: Subject matter including structure for modifying the amplitude, phase velocity, or propagation path of surface acoustic wave energy along the wave propagation path.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6828878 |
Surface acoustic wave device and communication apparatus utilizing a resonator with a dummy electrode |
Dec. 7, 2004 |
| 6828879 |
Longitudinal coupled multiple mode surface acoustic wave filter |
Dec. 7, 2004 |
| 6819203 |
Surface acoustic wave filter device |
Nov. 16, 2004 |
| 6816034 |
Electronic part such as dielectric filter or duplexer and method of forming an electrode of such an electronic part |
Nov. 9, 2004 |
| 6816036 |
Surface acoustic wave filter and communication apparatus |
Nov. 9, 2004 |
| 6812812 |
Longitudinally coupled surface acoustic wave resonator filter |
Nov. 2, 2004 |
| 6809614 |
Surface acoustic wave device having balanced and unbalanced terminals and a delay line |
Oct. 26, 2004 |
| 6806619 |
Interdigital transducer, surface acoustic wave filter, and radio communication apparatus |
Oct. 19, 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 |
| 6791437 |
Symmetric dual mode surface acoustic wave filter having symmetric housing connections |
Sep. 14, 2004 |
| 6788204 |
Surface-wave transducer device and identification system with such device |
Sep. 7, 2004 |
| 6781478 |
Longitudinally coupled resonator type surface acoustic wave filter and communication apparatus incorporating the same |
Aug. 24, 2004 |
| 6781483 |
Surface acoustic wave filter |
Aug. 24, 2004 |
| 6781485 |
Surface acoustic wave filter |
Aug. 24, 2004 |
| 6774747 |
Surface acoustic wave device |
Aug. 10, 2004 |
| 6774536 |
Surface acoustic wave device |
Aug. 10, 2004 |
| 6771144 |
Surface acoustic wave filter with a threefold mode filter section and a resonator |
Aug. 3, 2004 |
| 6771145 |
Surface acoustic wave device |
Aug. 3, 2004 |
| 6768397 |
Surface acoustic wave filter with balanced and unbalanced terminals |
Jul. 27, 2004 |
| 6762657 |
Longitudinally coupled resonator-type surface acoustic wave filter |
Jul. 13, 2004 |
| 6759928 |
Surface acoustic wave device with divided interdigital transducers |
Jul. 6, 2004 |
| 6744336 |
Wafer-scale package for surface acoustic wave circuit and method of manufacturing the same |
Jun. 1, 2004 |
| 6744333 |
Surface acoustic wave filter device with balanced and unbalanced terminals |
Jun. 1, 2004 |
| 6737942 |
Surface acoustic wave apparatus and communication apparatus |
May. 18, 2004 |
| 6737936 |
Surface-acoustic-wave duplexer with improved isolation |
May. 18, 2004 |
| 6731188 |
Surface acoustic wave filter device with an unbalanced-to-balanced conversion function |
May. 4, 2004 |
| 6720842 |
Surface acoustic wave filter device having first through third surface acoustic wave filter elements |
Apr. 13, 2004 |
| 6720847 |
Longitudinally-coupled resonator surface acoustic wave filter and communication apparatus using the same |
Apr. 13, 2004 |
| 6717489 |
Longitudinally connected resonator type surface acoustic wave filter |
Apr. 6, 2004 |
| 6717487 |
Surface acoustic wave filter, and communication apparatus using the same |
Apr. 6, 2004 |
| 6700460 |
Surface acoustic wave filter |
Mar. 2, 2004 |
| 6693501 |
Surface acoustic wave apparatus using filters with overlapped propagation paths and communications unit |
Feb. 17, 2004 |
| 6677835 |
Saw filter with an attenuation pole including a band-pass ladder type of saw filter having a saw resonator |
Jan. 13, 2004 |
| 6674345 |
Surface acoustic wave filter and communication device using the filter |
Jan. 6, 2004 |
| 6670868 |
Surface acoustic wave filter device |
Dec. 30, 2003 |
| 6667673 |
Dual-mode surface wave filter with enhanced symmetry and optionally enhanced stop-band attenuation |
Dec. 23, 2003 |
| 6664871 |
Cascaded surface acoustic wave filter system for cancelling time spurious responses |
Dec. 16, 2003 |
| 6661313 |
Surface acoustic wave devices using optimized cuts of lithium niobate (LiNbO3) |
Dec. 9, 2003 |
| 6650207 |
Longitudinally coupled surface acoustic wave filter with linearly weighted reflectors |
Nov. 18, 2003 |
| 6637087 |
Method of producing edge reflection type surface acoustic wave device |
Oct. 28, 2003 |
| 6621380 |
Longitudinally coupled resonator type surface acoustic wave filter having narrow electrode finger pitch sections |
Sep. 16, 2003 |
| 6606016 |
Surface acoustic wave device using two parallel connected filters with different passbands |
Aug. 12, 2003 |
| 6603371 |
Surface acoustic wave device having a small acoustic velocity distribution and method of producing the same |
Aug. 5, 2003 |
| 6597262 |
Surface acoustic wave filter and communication apparatus incorporating the same |
Jul. 22, 2003 |
| 6597261 |
Surface acoustic wave ladder filter using interdigital transducers not involving resonance |
Jul. 22, 2003 |
| 6587016 |
Surface acoustic wave filter with angled reflection by piezoelectric substrate reflection edges, duplexer, and communication device |
Jul. 1, 2003 |
| 6583691 |
Longitudinally coupled resonator type surface acoustic wave filter with an IDT having a narrow pitch portion |
Jun. 24, 2003 |
| 6577210 |
Surface acoustic wave filter having plural propagation paths and a coupler |
Jun. 10, 2003 |
| 6570471 |
Surface acoustic wave ladder filter having at least one resonator with electrode finger pairs in inverted orientation |
May. 27, 2003 |
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