US3576503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yig-tuned solid state oscillator
Assignee: HP Inc
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Filing: 1969-11-12
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Granted: 1971-04-27
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Expires: 1989-11-12
Abstract
Abstract An output coupling loop and a tuning loop are supported about a common axis and spaced-apart in parallel planes orthogonally intersecting the common axis. These loops are magnetically coupled by a YIG sphere supported along the common axis with its center positioned between the parallel planes. The output coupling loop is electrically connected by a matched transmission line across a matched load, and the tuning loop (either alone or in combination with a series gap capacitance) is electrically connected by a pair of parallel-connected bypass capacitors across a bulk-oscillating device. One of these bypass capacitors and the bulk-oscillating device are supported on a heat sink in a plane parallel to the common axis and orthogonal to the parallel planes. Both loops, the YIG sphere, and the bulk-oscillating device are mounted in the gap between the poles of a closed loop electromagnet.
Inventors
- 👤 Delon C Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:34
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/142; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
80 words
A YIG-tuned solid-state oscillator as in claim 1 wherein: said YIG sphere magnetically couples the tuning loop to the Output coupling loop at a frequency related to the resonant frequency of the YIG sphere; and said means comprises a closed loop electromagnet for varying the resonant frequency of the YIG sphere, said electromagnet having a gap within which the output coupling and tuning loops, the YIG sphere, and the solid-state oscillating device are mounted between opposite poles of the electromagnet.
Claim 2
Dependent Claim
59 words
A YIG-tuned solid-state oscillator as in claim 2 including a heat sink on which the solid-state oscillating device is mounted in a third plane orthogonal to the first and second planes and parallel to the axis about which the output coupling and tuning loops are positioned, said output coupling and tuning loops being mounted adjacent to the third plane.
Claim 3
Dependent Claim
36 words
A YIG-tuned solid-state oscillator as in claim 3 including a first bypass capacitor mounted on the heat sink in the third plane, said first bypass capacitor being electrically connected between the input and the reference potential.
Claim 4
Dependent Claim
27 words
A YIG-tuned solid-state oscillator as in claim 4 including an impedance electrically connected between the input and the reference potential in parallel with the first bypass capacitor.
Claim 5
Dependent Claim
25 words
A YIG-tuned solid-state oscillator as in claim 5 wherein said impedance is a second bypass capacitor having a different value than the first bypass capacitor.
Claim 6
Dependent Claim
80 words
A YIG-tuned solid-state oscillator as in claim 6 wherein: said output coupling loop is formed on a first dielectric substrate mounted adjacent to the heat sink; said tuning loop is aligned with the output coupling loop and formed on a second dielectric substrate mounted adjacent to the heat sink; and said YIG sphere is mounted in a hole formed through the second substrate within the tuning loop, said YIG sphere having its center positioned between the first and second planes.
Claim 7
Dependent Claim
96 words
A YIG-tuned solid-state oscillator as in claim 7 wherein said electromagnet includes: a hollow cylindrical housing of magnetic material with a central post extending from one end of the housing toward the other end of the housing, said post being spaced a finite distance from said other end of the housing to provide the gap between the opposite poles of the electromagnet; a pair of magnet drive input terminals supported by and electrically insulated from the housing; and an electrically insulated drive coil supported about the post and electrically connected between the magnet drive input terminals.
Claim 8
Dependent Claim
179 words
A YIG-tuned solid-state oscillator as in claim 8 wherein: said oscillator includes a first circular plate having a slot therethrough, said first plate being mounted at said other end of the housing with its slot passing between the post and said other end of the housing; said oscillator includes a second circular plate with a hole therethrough for receiving the post, said second circular plate being mounted over the first circular plate to cover the slot therein; said first substrate is mounted on a vertical sidewall of the slot in the first circular plate between the second circular plate and said other end of the housing; said heat sink is mounted at said other end of the housing within the slot in the first circular plate and adjacent to the first substrate; said second substrate is supported by the heat sink within the slot in the first circular plate and parallel and adjacent to the first substrate; and said second bypass capacitor is mounted at said other end of the housing within the slot in the first circular plate.
Claim 9
Dependent Claim
129 words
A YIG-tuned solid-state oscillator as in claim 9 wherein: said gap has a depth in the range from about 0.040 to about 0.065 of an inch; said output coupling and tuning loops have inner diameters in the range from about 0.015 to 0.060 of an inch; said YIG sphere has a diameter in the range from about 0.010 to about 0.040 of an inch; said output coupling and tuning loops are spaced-apart from about 0.008 to about 0.030 of an inch; said solid-state oscillating device comprises a gallium arsenide bulk-oscillator chip; said first bypass capacitor comprises a microwave bypass capacitor for bypassing signals having a frequency greater than 2 GHz.; and said second bypass capacitor comprises a low-frequency bypass capacitor for bypassing signals having a frequency below 100 MHz.
Claim 10
Dependent Claim
31 words
A YIG-tuned solid-state oscillator as in claim 2 including a tuning coil mounted adjacent to the gap between the opposite poles of the electromagnet to modulate the output of the oscillator.
Claim 11
Dependent Claim
25 words
A YIG-tuned solid-state oscillator as in claim 1 wherein means are electrically connected to the output coupling loop to modulate the output of the oscillator.
Claim 12
Dependent Claim
65 words
A YIG-tuned solid-state oscillator as in claim 1 including: a capacitance mounted in the second plane in series with the tuning loop so that the effective inductance of the tuning loop may resonate with said capacitance to reduce the electrical length of the tuning loop; and an inductance electrically connected across said capacitance and the tuning loop between the input and the solid-state oscillating device.
References Cited (Backward Citations)
US3533016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |