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Class Information
Number: 333/151
Name: Wave transmission lines and networks > Coupling networks > Delay lines including elastic surface wave propagation means > Spurious signal or mode cancellation means
Description: Subject matter including structure to reduce the effects of spurious mechanical or electric wave signals or modes on the output signal of the delay line.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8138856 High-frequency acoustic wave device Mar. 20, 2012
8009722 Multi-pass parameter estimation for G-Rake receiver Aug. 30, 2011
7889025 Anti-reflective acoustic diffuser for SAW and BAW devices Feb. 15, 2011
7880563 High-frequency acoustic wave device Feb. 1, 2011
7606294 Channel quality estimation method and receiving apparatus Oct. 20, 2009
7469017 Multimodulation transmitter Dec. 23, 2008
7372897 Portable information communication terminal, program, and recording medium May. 13, 2008
7352800 Method of partial parallel interference cancellation Apr. 1, 2008
7180388 Surface acoustic wave device Feb. 20, 2007
7102381 Adaptive termination for optimum signal detection Sep. 5, 2006
6515554 High-frequency circuit device and communication apparatus Feb. 4, 2003
6323740 High-frequency circuit device and communication apparatus Nov. 27, 2001
6057630 Surface acoustic wave device May. 2, 2000
5905449 Radio switching apparatus May. 18, 1999
5475348 Surface wave filter filtering delay transfer function Dec. 12, 1995
5414321 Surface-wave arrangement having a structure for preventing interfering acoustic wave components May. 9, 1995
5387833 Method and device for separating acoustic wave-generated energy from directly coupled electromagnetic interference Feb. 7, 1995
5367216 Surface acoustic wave element and communication system using the same Nov. 22, 1994
5349260 Two track surface wave arrangement with improved selection property Sep. 20, 1994
5306978 Surface acoustic wave unidirectional transducer having floating electrodes Apr. 26, 1994
5173667 Acoustic wave transmission media delay line having internally disposed absorber channels Dec. 22, 1992
5162689 Single-phase uni-directional acoustic wave transducer Nov. 10, 1992
5153476 Acoustic vibrator with variable sensitivity to external acceleration Oct. 6, 1992
5126706 Surface wave arrangement with conversion structure for preventing undesirable reflected waves Jun. 30, 1992
5111167 Surface acoustic wave device and method utilizing plural multi-strip couplers May. 5, 1992
4999535 Saw transducer with improved bus-bar design Mar. 12, 1991
4993000 Surface acoustic wave device Feb. 12, 1991
4960329 Chirp pulse echo ranging apparatus Oct. 2, 1990
4945354 Spurious signal correction for surface acoustic wave (SAW) security devices Jul. 31, 1990
4933588 Higher order transverse mode suppression in surface acoustic wave resonators Jun. 12, 1990
4931752 Polyimide damper for surface acoustic wave device Jun. 5, 1990
4912356 Saw slanted array correlator (SAC) with separate amplitude compensation channel Mar. 27, 1990
4882715 Surface acoustic wave convolver with dielectric film of high non-linear effect Nov. 21, 1989
4870312 Surface wave device having anti-reflective shield Sep. 26, 1989
4859996 Touch control arrangement for graphics display apparatus Aug. 22, 1989
RE32859 Acoustic surface wave devices Feb. 7, 1989
4803448 Cantilever mount of a substrate lamina of a surface wave device Feb. 7, 1989
4801872 Guided-wave acoustooptic spectrum analyzer Jan. 31, 1989
4775846 Unidirectional surface acoustic wave device Oct. 4, 1988
4773138 Method of producing transducer isolation in surface acoustic wave processor Sep. 27, 1988
4764701 Multichannel surface acoustic wave encoder/decoder Aug. 16, 1988
4752709 Surface acoustic wave device Jun. 21, 1988
4736172 Transducer for SAW arrangements Apr. 5, 1988
4694266 Notch filter Sep. 15, 1987
4689586 Surface elastic wave device Aug. 25, 1987
4684841 Saw devices including resistive films Aug. 4, 1987
4672338 Saw filter having response enhanced via dampening Jun. 9, 1987
4647881 Surface acoustic wave device Mar. 3, 1987
4642507 Saw devices with reflection-suppressing fingers Feb. 10, 1987
4623853 Surface acoustic wave dispersive delay lines having a laser irridated focus area for eliminating undesired saw concentrations Nov. 18, 1986

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