Patent US5045815A successfully refreshed from Google Patents.
US5045815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplitude and phase balanced voltage-controlled oscillator
Assignee: Motorola Solutions Inc
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Filing: 1990-12-03
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Granted: 1991-09-03
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Expires: 2010-12-03
Abstract
Abstract An oscillator comprises a resonator for providing an oscillation frequency for the oscillator, an active network, coupled to the resonator, for driving the resonator, and a split-ring resonator coupled to the main resonator and used to provide amplitude and phase balanced outputs. The split-ring resonator has at least a first edge, which is coupled to the resonator, and a second edge. The second edge has a gap therein, and a first terminal located at one side of the gap, and a second terminal symmetrically located at the other side of the gap.
Inventors
- 👤 Branko Avanic
- 👤 Leng H. Ooi
- 👤 Peter J. Yeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:33
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/18; H03B5/1841; H03B19/00; H03B2201/00; H03B2201/02; H03B2201/0208; H03D; H03D9/00; H03D9/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
96 words
An oscillator comprising: a resonator for providing an oscillation frequency for the oscillator; an active network, coupled to the resonator, for driving the resonator; a first split-ring resonator, having at least a first edge and a second edge, the first edge being coupled to the resonator, and the second edge having a gap therein, and a first terminal located at one side of the gap in the second edge of the first split-ring resonator, and a second terminal symmetrically located at the other side of the gap in the second edge of the first split-ring resonator.
Claim 2
Dependent Claim
96 words
An oscillator comprising: a resonator for providing an oscillation frequency for the oscillator; an active network, coupled to the resonator, for driving the resonator; a first split-ring resonator, having at least a first edge and a second edge, the first edge being coupled to the resonator, and the second edge having a gap therein, and a first terminal located at one side of the gap in the second edge of the first split-ring resonator, and a second terminal symmetrically located at the other side of the gap in the second edge of the first split-ring resonator.
Claim 3
Dependent Claim
18 words
The oscillator of claim 1, further comprising a capacitor connected across the gap in the first split-ring resonator.
Claim 4
Dependent Claim
52 words
The oscillator of claim 2, wherein the resonator comprises a second split-ring resonator having at least a first edge and a second edge, the first edge having a gap therein and being coupled to the active network, and the second edge being coupled to the first edge of the first split-ring resonator.
Claim 5
Dependent Claim
42 words
The oscillator of claim 3, wherein the second split-ring resonator comprises: a varactor connected across the gap in the first edge of the second split-ring resonator, the varactor being coupled to a control voltage for setting the oscillation frequency for the oscillator.
Claim 6
Dependent Claim
22 words
The oscillator of claim 4 wherein the varactor comprises a capacitor, and a varactor diode having its cathode connected to the capacitor.
Claim 7
Dependent Claim
112 words
A radio transceiver comprising: transmitter means, for transmitting radio-frequency signals; receiver means for receiving radio-frequency signals; a oscillator comprising: a resonator for providing an oscillation frequency for the oscillator; an active network, coupled to the resonator, for driving the resonator; a first split-ring resonator, having at least a first edge and a second edge, the first edge being coupled to the resonator, and the second edge having a gap therein, and a first terminal located at one side of the gap in the second edge of the first split-ring resonator, and a second terminal symmetrically located at the other side of the gap in the second edge of the first split-ring resonator.
Claim 8
Dependent Claim
112 words
A radio transceiver comprising: transmitter means, for transmitting radio-frequency signals; receiver means for receiving radio-frequency signals; a oscillator comprising: a resonator for providing an oscillation frequency for the oscillator; an active network, coupled to the resonator, for driving the resonator; a first split-ring resonator, having at least a first edge and a second edge, the first edge being coupled to the resonator, and the second edge having a gap therein, and a first terminal located at one side of the gap in the second edge of the first split-ring resonator, and a second terminal symmetrically located at the other side of the gap in the second edge of the first split-ring resonator.
Claim 9
Dependent Claim
21 words
The radio transceiver of claim 6, wherein the oscillator further comprises a capacitor connected across the gap in the split-ring resonator.
Claim 10
Dependent Claim
54 words
The radio transceiver of claim 7, wherein the oscillator further comprises a second split-ring resonator having at least a first edge and a second edge, the first edge having a gap therein and being coupled to the active network, and the second edge being coupled to the first edge of the first split-ring resonator.
Claim 11
Dependent Claim
42 words
The radio transceiver of claim 8, wherein the oscillator further comprises: a varactor connected across the gap in the first edge of the second split-ring resonator, the varactor being coupled to a control voltage for setting the oscillation frequency for the oscillator.
Claim 12
Dependent Claim
24 words
The radio transceiver of claim 9, wherein the oscillator further comprises a capacitor, and a varactor diode having its cathode connected to the capacitor.
Claim 13
Dependent Claim
98 words
An oscillator comprising: resonator means for providing an oscillation frequency for the oscillator; active driver means, coupled to the resonator means, for driving the resonator means; a first split-ring resonator, having at least a first edge and a second edge, the first edge being coupled to the resonator, and the second edge having a gap therein, and a first terminal located at one side of the gap in the second edge of the first split-ring resonator, and a second terminal symmetrically located at the other side of the gap in the second edge of the first split-ring resonator.
Claim 14
Dependent Claim
98 words
An oscillator comprising: resonator means for providing an oscillation frequency for the oscillator; active driver means, coupled to the resonator means, for driving the resonator means; a first split-ring resonator, having at least a first edge and a second edge, the first edge being coupled to the resonator, and the second edge having a gap therein, and a first terminal located at one side of the gap in the second edge of the first split-ring resonator, and a second terminal symmetrically located at the other side of the gap in the second edge of the first split-ring resonator.
Claim 15
Dependent Claim
18 words
The oscillator of claim 11, further comprising a capacitor connected across the gap in the first split-ring resonator.
Claim 16
Dependent Claim
52 words
The oscillator of claim 12, wherein the resonator comprises a second split-ring resonator having at least a first edge and a second edge, the first edge having a gap therein and being coupled to the active network, and the second edge being coupled to the first edge of the first split-ring resonator.
Claim 17
Dependent Claim
42 words
The oscillator of claim 13, wherein the second split-ring resonator comprises: a varactor connected across the gap in the first edge of the second split-ring resonator, the varactor being coupled to a control voltage for setting the oscillation frequency for the oscillator.
Claim 18
Dependent Claim
22 words
The oscillator of claim 14 wherein the varactor comprises a capacitor, and a varactor diode having its cathode connected to the capacitor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |