| Patent Number |
Title Of Patent |
Date Issued |
| 7213314 |
Method of forming a surface acoustic wave (SAW) filter device |
May 8, 2007 |
| A SAW filter includes a piezoelectric substrate of Lithium Niobate or optionally Lithium Tantalate having a thickness of at least twice an acoustic wavelength. The piezoelectric substrate is bonded to a surrogate substrate of a silicon material. The surrogate substrate is characterized |
| 7105980 |
Saw filter device and method employing normal temperature bonding for producing desirable filter |
September 12, 2006 |
| A SAW filter includes a piezoelectric substrate of Lithium Niobate or optionally Lithium Tantalate having a thickness of at least twice an acoustic wavelength. The piezoelectric substrate is bonded to a surrogate substrate of a silicon material. The surrogate substrate is characterized |
| 6861927 |
Longitudinally coupled leaky surface acoustic wave resonator filter |
March 1, 2005 |
| A longitudinally coupled leaky surface acoustic wave (LSAW) resonator filter has a wide bandwidth, low insertion loss and return loss characteristics, and high power handling capability. The LSAW resonator filter includes a plurality of longitudinally coupled LSAW resonator tracks di |
| 6833774 |
Surface acoustic wave filter |
December 21, 2004 |
| A SAW filter includes a piezoelectric substrate of a single crystal LiNbO.sub.3 and SAW resonators having an electrode thickness ranging from about 8% to about 9% of an acoustic wavelength of a high velocity SAW excited on the surface of the substrate. The piezoelectric substrate has |
| 6798318 |
Hybrid leaky surface acoustic wave resonator filter |
September 28, 2004 |
| A hybrid leaky surface acoustic wave (LSAW) resonator filter has a wide bandwidth, low insertion loss and return loss, and excellent rejection of frequencies outside the passband, and includes one or more longitudinally coupled LSAW resonator filter tracks with chirp-type resonant caviti |
| 6661313 |
Surface acoustic wave devices using optimized cuts of lithium niobate (LiNbO3) |
December 9, 2003 |
| A surface acoustic wave device includes a piezoelectric substrate of a single crystal LiNbO.sub.3 and an electrode pattern provided on a surface of the piezoelectric substrate which forms a resonator having an electrode thickness in a range of about 0.1% to about 8% of an acoustic wavele |
| 6566980 |
Die layout for SAW devices and associated methods |
May 20, 2003 |
| A surface-acoustic-wave die includes a generally rectangular die that comprises a piezoelectric material, atop which is positioned a surface-acoustic-wave electrode pattern. The pattern has a generally rectangular footprint, and the footprint has a top edge that is positioned at an a |
| 6556104 |
Surface acoustic wave devices using optimized cuts of a piezoelectric substrate |
April 29, 2003 |
| A surface acoustic wave device includes a piezoelectric substrate of a single crystal LiTaO.sub.3 and an electrode pattern provided on a surface of the piezoelectric substrate which forms a resonator having an electrode thickness in a range of about 1% to about 15% of an acoustic wavelen |
| 6031315 |
Optimal cut for saw devices on quartz |
February 29, 2000 |
| A quartz single crystal substrate (12), includes a prescribed range of Euler angles for substrate and crystal orientation which improves signal processing for surface acoustic wave (SAW) devices (10). When a voltage is applied to an input inter digital transducer (IDT) (16) of the SAW de |
| 5789990 |
Feedback oscillator circuit using a saw resonator filter |
August 4, 1998 |
| A crystal-controlled oscillator circuit is modified by the present invention by replacing the crystal with the first signal port of a two-port SAW resonator filter that has a low-loss primarily inductive characteristic and taking the oscillation output from the other port of the filt |
| 5081389 |
Crystal cut angles for lithium tantalate crystal for novel surface acoustic wave devices |
January 14, 1992 |
| A Lithium Tantalate crystal, defined by the Euler angles lambda (.lambda.) equal to about 0.degree. and mu (.mu.) equal to about 90.degree. with an acoustic wave propagation direction angle theta (.theta.) in the range of plus 130.degree. to plus 150.degree. and preferably equal to about |
