EP0279349A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Complementary acoustic charge transport devices and method
Assignee: Electronic Decisions Inc
•
Filing: 1988-02-11
•
Granted: —
•
Expires: 2008-02-11
Abstract
Abstract A complementary acoustic charge transport circuit element comprises first and second buried channels. Each of the channels is comprised of a piezoelectric semiconductor and each channel has a source through which charge is injected and a drain through which charge is extracted. A transducer [32] propagates an acoustic wave through each channel and the propagated waves transport the charge between the sources and the drains. A source and/or a drain of one channel is connected in parallel with the corresponding source and/or drain of the other channel. The waves are complementary at the interconnected ones of the sources and/or the drains.
Inventors
- 👤 Billy J. Hunsinger
- 👤 Michael J. Hoskins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 19:51
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02535; H03H9/0296; H03H9/02976
Claims Analysis
Total Claims: 67
Claim 1
Independent Claim
95 words
A circuit element, comprising: a) first and second buried channels, each of said channels comprised of a piezolectric semiconductor and each channel having a source through which charge is injected and a drain from which charge is extracted; b) means for propagating an acoustic wave through each of said channels, the propagated waves for transporting charge between the associated sources and drains; c) means interconnecting one of said sources and said drains; and, d) means for assuring that the waves are complementary at each one of said interconnected one of said sources and said drains.
Claim 2
Dependent Claim
95 words
A circuit element, comprising: a) first and second buried channels, each of said channels comprised of a piezolectric semiconductor and each channel having a source through which charge is injected and a drain from which charge is extracted; b) means for propagating an acoustic wave through each of said channels, the propagated waves for transporting charge between the associated sources and drains; c) means interconnecting one of said sources and said drains; and, d) means for assuring that the waves are complementary at each one of said interconnected one of said sources and said drains.
Claim 3
Dependent Claim
11 words
The element of Claim 1, wherein: a) said sources being interconnected.
Claim 4
Dependent Claim
11 words
The element of Claim 1, wherein: a) said drains being interconnected.
Claim 5
Dependent Claim
11 words
The element of Claim 3, wherein: a) said sources being interconnected.
Claim 6
Dependent Claim
62 words
The element of Claim 1, wherein: a) said propagating means including transducer means; b) said transducer means being common to said channels; and, c) said assuring means includes the interconnected ones of said interconnected one of said sources and said drains being offset from said transducer means a distance sufficient to assure that the propagated waves are N-phase complementary at that point.
Claim 7
Dependent Claim
27 words
The element of Claim 5, wherein: a) said transducer means including a first and a second transducer, each of said transducers associated with one of said channels.
Claim 8
Dependent Claim
43 words
The element of Claim 6, wherein: a) said transducers being spaced a common distance from the associated channels; and. b) the interconnected ones of said interconnected one of said sources and said drains being disposed in staggered relation relative to the associated transducers.
Claim 9
Dependent Claim
15 words
The element of Claim 6, wherein: a) said transducers being offset from the associated channels.
Claim 10
Dependent Claim
21 words
The element of Claim 5, wherein: a) said transducer means including a plural phase transducer, the phases thereof being N-phase complementary.
Claim 11
Dependent Claim
44 words
The element of Claim 5, wherein: a) said channels being integrated onto a common piezoelectric substrate; and, b) means being associated with said substrate for defining said channels, said defining means being transparent to the propagated waves and electrically isolating one channel from another.
Claim 12
Dependent Claim
143 words
An integrated device, comprising: a) a piezoelectric semiconductor substrate; b) means associated with said substrate for defining a plurality of buried channels therein, said defining means being transparent to an acoustic wave and electrically isolating one channel from another; c) a source associated with each of said channels for injecting charge therein; d) a drain associated with each of said channels for extracting charge therefrom; e) transducer means associated with each of said channels for propagating an acoustic wave therethrough and the propagated waves for transporting charge from a source to the associated drain; f) one of said sources and said drains being interconnected; and, g) said transducer means and said interconnected ones of said sources and said drains being disposed so that the propagated waves are complementary at the corresponding interconnected ones of said interconnected one of said sources and said drains.
Claim 13
Dependent Claim
143 words
An integrated device, comprising: a) a piezoelectric semiconductor substrate; b) means associated with said substrate for defining a plurality of buried channels therein, said defining means being transparent to an acoustic wave and electrically isolating one channel from another; c) a source associated with each of said channels for injecting charge therein; d) a drain associated with each of said channels for extracting charge therefrom; e) transducer means associated with each of said channels for propagating an acoustic wave therethrough and the propagated waves for transporting charge from a source to the associated drain; f) one of said sources and said drains being interconnected; and, g) said transducer means and said interconnected ones of said sources and said drains being disposed so that the propagated waves are complementary at the corresponding interconnected ones of said interconnected one of said sources and said drains.
Claim 14
Dependent Claim
11 words
The device of Claim 11, wherein: a) said sources being interconnected.
Claim 15
Dependent Claim
11 words
The device of Claim 11, wherein: a) said drains being interconnected.
Claim 16
Dependent Claim
11 words
The device of Claim 13, wherein: a) said sources being interconnected.
Claim 17
Dependent Claim
71 words
The device of Claim 11, wherein: a) said transducer means including an interdigital SAW transducer and a SAW grating reflector for generating a unidirectional SAW; b) said transducer means being common to each of said channels; and, c) said interconnected ones of said interconnected one of said sources and said drains being offset from said transducer means and from each other a distance sufficient to assure that the SAWs are N-complementary.
Claim 18
Dependent Claim
15 words
The device of Claim 11, wherein: a) said channels being disposed in spaced parallel relation.
Claim 19
Dependent Claim
29 words
The device of Claim 15, wherein: a) said channels being disposed in spaced parallel relation; and, b) said transducer means being a common distance from each of said channels.
Claim 20
Dependent Claim
13 words
The device of Claim 11, wherein: a) said substrate comprised of gallium arsenic.
Claim 21
Dependent Claim
181 words
An acoustic charge transport assembly, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor overlayed with a barrier material and each of said channels being bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and disposed generally at one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and disposed at another end thereof so that the associated barrier materials is disposed between the sources and the drains; d) transducer means associated with each of said channels for propagating an acoustic wave therethrough for transporting charge between a source and the associated drain; e) means for establishing parallel connection between said first and second sources and / or said first and second drains; and, f) said transducer means and said connected ones of said sources and/or drains disposed so that the waves are N-complementary at each of said connected ones of said sources and/or drains.
Claim 22
Dependent Claim
181 words
An acoustic charge transport assembly, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor overlayed with a barrier material and each of said channels being bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and disposed generally at one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and disposed at another end thereof so that the associated barrier materials is disposed between the sources and the drains; d) transducer means associated with each of said channels for propagating an acoustic wave therethrough for transporting charge between a source and the associated drain; e) means for establishing parallel connection between said first and second sources and / or said first and second drains; and, f) said transducer means and said connected ones of said sources and/or drains disposed so that the waves are N-complementary at each of said connected ones of said sources and/or drains.
Claim 23
Dependent Claim
11 words
The assembly of Claim 19, wherein: a) said sources being connected.
Claim 24
Dependent Claim
11 words
The assembly of Claim 19, wherein: a) said drains being connected.
Claim 25
Dependent Claim
11 words
The assembly of Claim 21, wherein: a) said sources being connected.
Claim 26
Dependent Claim
33 words
The assembly of Claim 19, wherein: a) said transducer means including an interdigital transducer and a grating reflector for generating a unidirectional acoustic wave b) said transducer means being common to said channels.
Claim 27
Dependent Claim
26 words
The assembly of Claim 23, wherein: a) there being first and second transducer means, each of said transducer means being associated with one of said channels.
Claim 28
Dependent Claim
27 words
The assembly of Claim 19, further comprising: a) a piezoelectric substrate; and, b) said channels being integral with said substrate and disposed in spaced parallel relation therein.
Claim 29
Dependent Claim
29 words
The assembly of Claim 20, wherein: a) each of said sources being a preselected distance from said transducer means so that the waves are N-complementary at any one source.
Claim 30
Dependent Claim
29 words
The assembly of Claim 21, wherein: a) each of said drains being a preselected distance from said transducer means so that the waves are N-complementary at any one drain.
Claim 31
Dependent Claim
37 words
The assembly of Claim 22, wherein: a) each of said sources and drains being a preselected distance from the associated transducer means so that the waves are N-complementary at any one source and at any associated drain.
Claim 32
Dependent Claim
37 words
The assembly of Claim 19, wherein: a) the connected ones of said sources and said drains being spaced from said transducer means a distance proportional to the wavelength of the waves divided by the number of channels.
Claim 33
Dependent Claim
26 words
The assembly of Claim 19, wherein: a) said transducer means including a multiphase transducer assembly, each of the phases being associated with one of said channels.
Claim 34
Dependent Claim
124 words
A multiplexer, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and disposed generally at one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and disposed generally at another end thereof; d) transducer means associated with each of said channels for propagating acoustic wave therethrough for transporting charge between the associated sources and drains; e) means interconnecting said drains; and, f) said transducer means and said drains being arranged so that the waves are N-complementary at said drains.
Claim 35
Dependent Claim
124 words
A multiplexer, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and disposed generally at one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and disposed generally at another end thereof; d) transducer means associated with each of said channels for propagating acoustic wave therethrough for transporting charge between the associated sources and drains; e) means interconnecting said drains; and, f) said transducer means and said drains being arranged so that the waves are N-complementary at said drains.
Claim 36
Dependent Claim
27 words
The multiplexer of Claim 31, wherein: a) said drains being disposed a preselected distance from said transducer means so that the waves at any drain are N-complementary.
Claim 37
Dependent Claim
26 words
The multiplexer of Claim 31, wherein: a) said transducer means including a multiphase transducer assembly, each of the phases being associated with one of said channels.
Claim 38
Dependent Claim
33 words
The multiplexer of Claim 32, wherein: a) said drains being spaced apart relative to said transducer means a distance proportional to the wavelength of the propagated waves divided by the number of channels.
Claim 39
Dependent Claim
29 words
The multiplexer of Claim 31, further comprising: a) a piezoelectric substrate; b) said channels being integral with said substrate; and, c) said transducer means being common to said channels.
Claim 40
Dependent Claim
24 words
The multiplexer of Claim 35, wherein: a) said isolating means being transparent to the acoustic waves; and, b) said isolating means having common dimensions.
Claim 41
Dependent Claim
128 words
A demultiplexer, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor and being bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and being disposed at generally one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and being disposed at generally another end thereof; d) transducer means associated with each of said channels for propagating acoustic waves therethrough for transporting charge between the associated sources and drains; e) means interconnecting said sources; and, f) said transducer means and said sources being arranged so that the waves are N-complementary at said sources.
Claim 42
Dependent Claim
128 words
A demultiplexer, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor and being bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and being disposed at generally one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and being disposed at generally another end thereof; d) transducer means associated with each of said channels for propagating acoustic waves therethrough for transporting charge between the associated sources and drains; e) means interconnecting said sources; and, f) said transducer means and said sources being arranged so that the waves are N-complementary at said sources.
Claim 43
Dependent Claim
27 words
The demultiplexer of Claim 37, wherein: a) said sources being disposed a preselected distance from said transducer means so that the waves at any source are N-complementary.
Claim 44
Dependent Claim
26 words
The demultiplexer of Claim 37, wherein: a) said transducer means including a multiphase transducer assembly, each of the phases being associated with one of said channels.
Claim 45
Dependent Claim
32 words
The demultiplexer of Claim 38, wherein: a) said source being spaced apart relative to said transducer means a distance proportional to the wavelength of the waves divided by the number of channels.
Claim 46
Dependent Claim
29 words
The demultiplexer of Claim 37, further comprising: a) a piezoelectric substrate; b) said channels being integral with said substrate; and, c) said transducer means being common to said channels.
Claim 47
Dependent Claim
26 words
The demultiplexer of Claim 41, wherein: a) said isolating means being transparent to the acoustic waves; and, b) said isolating means having common channel defining dimensions.
Claim 48
Dependent Claim
118 words
A high speed delay line, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor and being bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and disposed generally at one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and disposed generally at another end thereof; d) transducer means associated with each of said channels for propagating an acoustic wave therethrough for transporting charge between the associated and drains; e) first means interconnecting said sources; f) second means interconnecting said drains; and,
Claim 49
Dependent Claim
118 words
A high speed delay line, comprising: a) first and second buried channels, each of said channels comprised of a piezoelectric semiconductor and being bounded by electrical isolating means; b) first and second sources through which charge is injected, each of said sources associated with one of said channels and disposed generally at one end thereof; c) first and second drains through which charge is extracted, each of said drains associated with one of said channels and disposed generally at another end thereof; d) transducer means associated with each of said channels for propagating an acoustic wave therethrough for transporting charge between the associated and drains; e) first means interconnecting said sources; f) second means interconnecting said drains; and,
Claim 50
Dependent Claim
34 words
The delay line of Claim 43, wherein: a) said sources and said drains being disposed a preselected distance from said transducer means so that the waves at any source and any drain are complementary.
Claim 51
Dependent Claim
66 words
The delay line of Claim 43, wherein: a) each source being spaced from the other relative to said transducer means a distance proportional to the wavelength of the propagated waves divided by the number of channels; and, b) each drain being spaced from the other relative to said transducer means a distance proportional to the wavelength of the propagated waves divided by the number of channels.
Claim 52
Dependent Claim
26 words
The delay line of Claim 43, wherein: a) said transducer means including a multiphase transducer assembly, each phase thereof being associated with one of said channels.
Claim 53
Dependent Claim
30 words
The delay line of Claim 43, further comprising: a) a piezoelectric substrate; b) said channels being integral with said substrate; and, c) said transducer means being common to said substrate.
Claim 54
Dependent Claim
93 words
A circuit element, comprising: a) first and second acoustic charge transport devices, each of said devices comprising a channel buried within a piezoelectric semiconductor substrate, a source through which charge is injected, a drain through which charge is extracted and transducer means for generating a surface acoustic wave which propagates through each channel and transports charge from the associated source to the associated drain; b) means interconnecting the sources and/or the drains of said devices; and. c) means for establishing complementary phase relationship between the propagated waves at the interconnected sources and/or drains.
Claim 55
Dependent Claim
93 words
A circuit element, comprising: a) first and second acoustic charge transport devices, each of said devices comprising a channel buried within a piezoelectric semiconductor substrate, a source through which charge is injected, a drain through which charge is extracted and transducer means for generating a surface acoustic wave which propagates through each channel and transports charge from the associated source to the associated drain; b) means interconnecting the sources and/or the drains of said devices; and. c) means for establishing complementary phase relationship between the propagated waves at the interconnected sources and/or drains.
Claim 56
Independent Claim
111 words
The method of operating interconnected transport devices, comprising the steps of: a) providing a first and a second buried channel, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means and each channel having a source and a drain and the source and/or the drain of one channel being connected in parallel with the corresponding source and/or drain of the other channel; b) propagating an acoustic wave through each channel, the waves being complementary at the connected sources and/or drains; c) applying a charge to each of said sources and thereby transporting the charge from a source to an associated drain; and, d) extracting the transported charge.
Claim 57
Independent Claim
111 words
The method of operating interconnected transport devices, comprising the steps of: a) providing a first and a second buried channel, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means and each channel having a source and a drain and the source and/or the drain of one channel being connected in parallel with the corresponding source and/or drain of the other channel; b) propagating an acoustic wave through each channel, the waves being complementary at the connected sources and/or drains; c) applying a charge to each of said sources and thereby transporting the charge from a source to an associated drain; and, d) extracting the transported charge.
Claim 58
Dependent Claim
22 words
The method of Claim 47, including the step: a) propagating the waves through each channel by means of a common transducer means.
Claim 59
Dependent Claim
27 words
The method of Claim 47, including the step of: a) propagating the waves through each channel by means of a transducer means unique to the specific channel.
Claim 60
Independent Claim
116 words
The method of operating an integrated device, comprising the steps of: a) providing a piezoelectric semiconductor substrate having first and second buried channels and each channel bounded by electrical isolating means and each channel having a source and a drain and the source and/or the drain of one channel being connected in parallel with the corresponding source and/or drain of the other channel; b) propagating an acoustic wave through said substrate and thereby through each of said channels, said connected sources and/or drains being arranged so that the waves are complementary thereat; c) applying a charge to said sources and thereby transporting the charge from a source to a drain; and, d) extracting the transported charge.
Claim 61
Independent Claim
116 words
The method of operating an integrated device, comprising the steps of: a) providing a piezoelectric semiconductor substrate having first and second buried channels and each channel bounded by electrical isolating means and each channel having a source and a drain and the source and/or the drain of one channel being connected in parallel with the corresponding source and/or drain of the other channel; b) propagating an acoustic wave through said substrate and thereby through each of said channels, said connected sources and/or drains being arranged so that the waves are complementary thereat; c) applying a charge to said sources and thereby transporting the charge from a source to a drain; and, d) extracting the transported charge.
Claim 62
Independent Claim
92 words
The method of multiplexing .signals, comprising the steps of: a) providing first and second buried channels, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means and each channel having a source and a drain and the drains being connected in parallel; b) propagating an acoustic wave through said channels, the waves being complementary at said drains; c) applying a charge to each of said sources and thereby causing the waves to transport the charge from a source to an associated drain; and, d) extracting the transported charges.
Claim 63
Independent Claim
92 words
The method of multiplexing .signals, comprising the steps of: a) providing first and second buried channels, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means and each channel having a source and a drain and the drains being connected in parallel; b) propagating an acoustic wave through said channels, the waves being complementary at said drains; c) applying a charge to each of said sources and thereby causing the waves to transport the charge from a source to an associated drain; and, d) extracting the transported charges.
Claim 64
Independent Claim
94 words
The method of demultiplexing signals, comprising the steps of: a) providing first and second buried channels, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means and each channel having a source and a drain and said sources being connected in parallel: b) propagating an acoustic wave through each of said channels, the waves being complementary at said sources; c) applying a charge to each of said sources and thereby causing the waves to transport the charge from a source to an associated drain; and, d) extracting the transported charge.
Claim 65
Independent Claim
94 words
The method of demultiplexing signals, comprising the steps of: a) providing first and second buried channels, each of said channels comprised of a piezoelectric semiconductor bounded by electrical isolating means and each channel having a source and a drain and said sources being connected in parallel: b) propagating an acoustic wave through each of said channels, the waves being complementary at said sources; c) applying a charge to each of said sources and thereby causing the waves to transport the charge from a source to an associated drain; and, d) extracting the transported charge.
Claim 66
Independent Claim
114 words
The method of delaying plural signals, comprising the steps of: a) providing first and second buried channels, each channel comprised of a piezoelectric semiconductor and being bounded by electrical isolating means and each channel having a source and a drain and the source and drain of one channel being connected in parallel with the corresponding source and drain of the other channel; b) propagating an acoustic wave through each of said channels, the waves being complementary at the sources and at the drains; c) applying a charge to each of said sources and thereby causing the waves to transport the charge from a source to an associated drain; and, d) extracting the transported charge.
Claim 67
Independent Claim
114 words
The method of delaying plural signals, comprising the steps of: a) providing first and second buried channels, each channel comprised of a piezoelectric semiconductor and being bounded by electrical isolating means and each channel having a source and a drain and the source and drain of one channel being connected in parallel with the corresponding source and drain of the other channel; b) propagating an acoustic wave through each of said channels, the waves being complementary at the sources and at the drains; c) applying a charge to each of said sources and thereby causing the waves to transport the charge from a source to an associated drain; and, d) extracting the transported charge.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.