US5166857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically tunable capacitor switch
Assignee: Motorola Solutions Inc
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Filing: 1991-12-24
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Granted: 1992-11-24
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Expires: 2011-12-24
Abstract
Abstract An integrated switch (100) includes a first input port (102), a second input port (112) and an output port (106). The integrated switch (100) comprises a first electronically-tunable integrated capacitor (104) having a control line (108) for selectively coupling the first input port (102) to the output port (106). The switch (100) also includes a second electronically-tunable integrated capacitor (110) having a control line (108) for selectively coupling the second input port (112) to the output port (106).
Inventors
- 👤 Branko Avanic
- 👤 Robert L. Benenati
- 👤 Robert E. Stengel
- 👤 Robert G. Kinsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:00
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24; H01G; H01G7/00; H01G7/06; H03; H03K; H03K17/00; H03K17/002; H03K17/005; H03K17/51; H03K17/56; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44; H10; H10D; H10D1/00; H10D1/60; H10D1/62; H10D1/64
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
61 words
An integrated electronic switch having a first and a second port and a control input, the switch comprising: a first electronically-tunable integrated capacitor having a first control means for selectively coupling the first input port to the output port; and a second electronically-tunable integrated capacitor having a second control means for selectively coupling the second input port to the output port.
Claim 2
Dependent Claim
61 words
An integrated electronic switch having a first and a second port and a control input, the switch comprising: a first electronically-tunable integrated capacitor having a first control means for selectively coupling the first input port to the output port; and a second electronically-tunable integrated capacitor having a second control means for selectively coupling the second input port to the output port.
Claim 3
Dependent Claim
84 words
The integrated electronic switch of claim 1, wherein the first electronically-tunable integrated capacitor includes: a semiconductor having a first and a second layer, the second layer formed of semiconductive material of a higher resistivity than the first layer; a depletion layer formed in the high resistivity layer; an insulating layer formed on the high resistivity layer, said insulating layer being a metal oxide having a dielectric constant greater than the dielectric constant of the semiconductor; and a conductive electrode formed on the insulating layer.
Claim 4
Dependent Claim
18 words
The integrated electronic switch of claim 2, wherein the insulating layer has a dielectric constant greater than 16.
Claim 5
Dependent Claim
16 words
The integrated electronic switch of claim 2, wherein the insulating layer is a low-loss, non-ferroelectric insulator.
Claim 6
Dependent Claim
28 words
The integrated electronic switch of claim 2, wherein the dielectric constant of the insulating layer is greater than the dielectric constant of the second layer of semiconductive material.
Claim 7
Dependent Claim
45 words
The integrated electronic switch of claim 2, wherein the insulating layer material is a metal oxide wherein the metal comprises at least first and second components selected from the group consisting of barium, lead, lithium, molybdenum, neodymium, niobium, strontium, tantalum, titanium, tungsten, vanadium, and zirconium.
Claim 8
Dependent Claim
19 words
The integrated electronic switch of claim 1, wherein the first electronically-tunable integrated capacitor comprises a Zirconium Titanate integrated capacitor.
Claim 9
Dependent Claim
84 words
The integrated electronic switch of claim 1, wherein the first electronically-tunable integrated capacitor includes: a semiconductor having a first and a second layer, the second layer formed of semiconductive material of a higher resistivity than the first layer; a depletion layer formed in the high resistivity layer; an insulating layer formed on the high resistivity layer, said insulating layer being a metal oxide having a dielectric constant greater than the dielectric constant of the semiconductor; and a conductive electrode formed on the insulating layer.
Claim 10
Dependent Claim
16 words
The integrated antenna switch of claim 8, wherein the insulating layer is a low-loss, non-ferroelectric insulator.
Claim 11
Dependent Claim
71 words
An integrated antenna switch having a receive port, a transmit port and an antenna port, the antenna switch comprising: a first electronically-tunable integrated capacitor coupling the transmit port to the antenna port, the first capacitor having a control means for selectively de-coupling the transmit port from the antenna port; a second electronically-tunable integrated capacitor coupled to the receive port; and coupler means for coupling the receive port to the antenna port.
Claim 12
Dependent Claim
71 words
An integrated antenna switch having a receive port, a transmit port and an antenna port, the antenna switch comprising: a first electronically-tunable integrated capacitor coupling the transmit port to the antenna port, the first capacitor having a control means for selectively de-coupling the transmit port from the antenna port; a second electronically-tunable integrated capacitor coupled to the receive port; and coupler means for coupling the receive port to the antenna port.
Claim 13
Dependent Claim
15 words
The integrated antenna switch of claim 10, wherein the coupler means includes a quarterwave transformer.
Claim 14
Dependent Claim
20 words
The integrated antenna switch of claim 10, wherein the second electronically tunable integrated capacitor is included in the coupler means.
Claim 15
Dependent Claim
19 words
The integrated antenna switch of claim 10, wherein the first electronically-tunable integrated capacitor comprises a Zirconium Titanate integrated capacitor.
Claim 16
Dependent Claim
75 words
A communication device, comprising: an integrated antenna switch having a receive port, a transmit port, and an antenna port, the antenna switch comprising: (a) a first electronically-tunable integrated capacitor for coupling the transmit port to the antenna port; (b) a second electronically-tunable integrated capacitor coupled to the receive port; (c) coupler means for coupling the receive port to the antenna port; and receiver means coupled to the integrated antenna switch for receiving radio communication signals.
Claim 17
Dependent Claim
75 words
A communication device, comprising: an integrated antenna switch having a receive port, a transmit port, and an antenna port, the antenna switch comprising: (a) a first electronically-tunable integrated capacitor for coupling the transmit port to the antenna port; (b) a second electronically-tunable integrated capacitor coupled to the receive port; (c) coupler means for coupling the receive port to the antenna port; and receiver means coupled to the integrated antenna switch for receiving radio communication signals.
Claim 18
Dependent Claim
14 words
The communication device of claim 14, wherein the coupler means includes a quarterwave transformer.
Claim 19
Dependent Claim
18 words
The communication device of claim 14, wherein the first electronically-tunable integrated capacitor comprises a Zirconium Titanate integrated capacitor.
Claim 20
Dependent Claim
83 words
The communication device of claim 14, wherein the first electronically-tunable integrated capacitor includes: a semiconductor having a first and a second layer, the second layer formed of semiconductive material of a higher resistivity than the first layer; a depletion layer formed in the high resistivity layer; an insulating layer formed on the high resistivity layer, said insulating layer being a metal oxide having a dielectric constant greater than the dielectric constant of the semiconductor; and a conductive electrode formed on the insulating layer.
Claim 21
Dependent Claim
26 words
The communication device of claim 17, wherein the dielectric constant of the insulating layer is greater than the dielectric constant of the high resistivity semiconductor material.
Claim 22
Dependent Claim
69 words
An integrated antenna switch having a receive port, a transmit port and an antenna port, the antenna switch comprising: a first electronically-tunable integrated capacitor coupled to the transmit port, the first capacitor having a control input for selectively de-coupling it from the transmit port; a second electronically-tunable integrated capacitor coupled to the receive port; and coupler means for coupling the receive and the transmit ports to the antenna port.
Claim 23
Dependent Claim
69 words
An integrated antenna switch having a receive port, a transmit port and an antenna port, the antenna switch comprising: a first electronically-tunable integrated capacitor coupled to the transmit port, the first capacitor having a control input for selectively de-coupling it from the transmit port; a second electronically-tunable integrated capacitor coupled to the receive port; and coupler means for coupling the receive and the transmit ports to the antenna port.
Claim 24
Dependent Claim
15 words
The integrated antenna switch of claim 19, wherein the coupler means includes a quarterwave transformer.
Claim 25
Dependent Claim
26 words
The antenna switch/filter assembly of claim 20, wherein the second filter includes an electronically tunable capacitor for substantially decoupling the transmit port from the antenna port.
Claim 26
Dependent Claim
59 words
An antenna switch/filter assembly having an antenna port, a receive port, and a transmit port, comprising: a first filter coupled between the receive port and the antenna port, the first filter including an electronically tunable capacitor for substantially decoupling the receive port from the antenna port; and a second filter coupled between the transmit port and the antenna port.
Claim 27
Dependent Claim
59 words
An antenna switch/filter assembly having an antenna port, a receive port, and a transmit port, comprising: a first filter coupled between the receive port and the antenna port, the first filter including an electronically tunable capacitor for substantially decoupling the receive port from the antenna port; and a second filter coupled between the transmit port and the antenna port.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |