Patent US4060772A successfully refreshed from Google Patents.
US4060772A
Expired / Lapsed
US
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Oscillator
Assignee: Toshiba Corp
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Filing: 1976-02-03
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Granted: 1977-11-29
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Expires: 1996-02-03
Abstract
Abstract An oscillator having a phase-inverting oscillation inverter formed of insulated gate field effect transistors, a feedback circuit for inverting the phase of an output signal from the phase-inverting oscillation inverter and feeding the phase-inverted output signal back to the input side of the phase-inverting oscillation inverter and an amplifier for amplifying an output signal from the phase-inverting oscillation inverter. Said feedback circuit is formed of a passive circuit and has a larger voltage gain than 1. The signal fed back by the feedback circuit is drawn out from the input side of the oscillation inverter and delivered to the succeeding amplifier.
Inventors
- 👤 Hisashi Yamada
- 👤 Yoshinori Horiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:43
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/353; H03K3/354; H03K3/3545; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/364
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
99 words
An oscillator comprising a first inverter formed of insulated gate field effect transistors and acting as an oscillator; a feedback circuit formed of a passive circuit and designed to invert the phase of an output signal from the first inverter, amplify the output signal with a larger voltage gain than 1 and feed the output signal back to the input side of the first inverter; and means for drawing out the output signal of the feedback circuit from the input side of the first inverter and delivering said output signal to a succeeding second inverter acting as an amplifier.
Claim 2
Dependent Claim
99 words
An oscillator comprising a first inverter formed of insulated gate field effect transistors and acting as an oscillator; a feedback circuit formed of a passive circuit and designed to invert the phase of an output signal from the first inverter, amplify the output signal with a larger voltage gain than 1 and feed the output signal back to the input side of the first inverter; and means for drawing out the output signal of the feedback circuit from the input side of the first inverter and delivering said output signal to a succeeding second inverter acting as an amplifier.
Claim 3
Dependent Claim
64 words
The oscillator according to claim 1, wherein the feedback circuit is constituted by a resonance circuit formed of first and second capacitance elements and an inductance element connected in the π form; and the first capacitance element connected to the output terminal of the first inverter has a larger capacity than the second capacitance element connected to the input terminal of the first inverter.
Claim 4
Dependent Claim
14 words
The oscillator according to claim 2, wherein the inductance element is a piezoelectric element.
Claim 5
Dependent Claim
17 words
The oscillator according to claim 3, wherein the piezoelectric element is formed of a quartz crystal vibrator.
Claim 6
Dependent Claim
18 words
The oscillator according to claim 1, wherein the second inverter has the same arrangement as the first inverter.
Claim 7
Dependent Claim
40 words
The oscillator according to claim 5, wherein the field effect transistor acting as the load of the first and second inverters is of the same channel type as the field effect transistor acting as the driver of said both inverters.
Claim 8
Dependent Claim
36 words
The oscillator according to claim 5, wherein the field effect transistor acting as the load of the first and second inverters is complementary to the field effect transistor acting as the driver of said both inverters.
Claim 9
Dependent Claim
88 words
The oscillator according to claim 1, wherein the feedback circuit consists of a bridged T-type circuit comprising first and second series-connected inductance elements, a first capacitance element parallel connected to said series-connected inductance elements and a second capacitance element connected between the junction of the first inductance element with the second inductance element and the ground; and the second inductance element connected to the input terminal of the oscillation inverter has a larger inductance than the first inductance element connected to the output terminal of the oscillation inverter.
Claim 10
Dependent Claim
22 words
The oscillator according to claim 8, wherein the amplifier is a phase-inverting amplification inverter having the same arrangement as the oscillation inverter.
Claim 11
Dependent Claim
43 words
The oscillator according to claim 9, wherein the field effect transistor acting as the load of the phase-inverting oscillation inverter and phase-inverting amplification inverter is of the same channel type as the field effect transistor acting as the driver of said both inverters.
Claim 12
Dependent Claim
39 words
The oscillator according to claim 9, wherein the field effect transistor acting as the load of the phase-inverting oscillation inverter and phase-inverting amplification inverter is complementary to the field effect transistor acting as the driver of said both inverters.
Claim 13
Dependent Claim
108 words
An oscillator which is of the Colpitts type and comprises a first inverter formed of insulated gate field effect transistors and acting as an oscillator; a feedback circuit formed of a passive circuit and designed to invert the phase of an output signal from the first inverter, amplify said phase-inverted output signal with a larger voltage gain than 1 and feed the amplified output signal back to the input side of the first inverter; and means for drawing out the output signal of the feedback circuit from the input side of the first inverter and delivering said output signal to a succeeding second inverter acting as an amplifier.
Claim 14
Dependent Claim
108 words
An oscillator which is of the Colpitts type and comprises a first inverter formed of insulated gate field effect transistors and acting as an oscillator; a feedback circuit formed of a passive circuit and designed to invert the phase of an output signal from the first inverter, amplify said phase-inverted output signal with a larger voltage gain than 1 and feed the amplified output signal back to the input side of the first inverter; and means for drawing out the output signal of the feedback circuit from the input side of the first inverter and delivering said output signal to a succeeding second inverter acting as an amplifier.
Claim 15
Dependent Claim
101 words
An oscillator which is of the Hartley type and comprises a phase-inverting oscillation inverter formed of insulated gate field effect transistors; a feedback circuit formed of a passive circuit and designed to invert the phase of an output signal from the phase-inverting oscillation inverter, amplify said phase-inverted output signal with a larger voltage gain than 1 and feed the amplified output signal back to the input side of the phase-inverting oscillation inverter; and means for drawing out the output signal of the feedback circuit from the input side of the oscillation inverter and delivering said output signal to the succeeding amplifier.
Claim 16
Dependent Claim
101 words
An oscillator which is of the Hartley type and comprises a phase-inverting oscillation inverter formed of insulated gate field effect transistors; a feedback circuit formed of a passive circuit and designed to invert the phase of an output signal from the phase-inverting oscillation inverter, amplify said phase-inverted output signal with a larger voltage gain than 1 and feed the amplified output signal back to the input side of the phase-inverting oscillation inverter; and means for drawing out the output signal of the feedback circuit from the input side of the oscillation inverter and delivering said output signal to the succeeding amplifier.
References Cited (Backward Citations)
US3714867A
Cited
US3965442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |