US3092774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low noise crystal diode mixer
Assignee: General Electric Co
•
Filing: 1958-10-03
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Granted: 1963-06-04
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Harry J Peppiatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:35
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/06; H03D9/0608; H03D9/0625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A LOW NOISE CRYSTAL MIXER CIRCUIT COMPRISING A RESONANT CAVITY TUNED TO INCOMING RADIO FREQUENCY ENERGY INPUT, A CRYSTAL DIODE MIXER, A TRANSMISSION LINE COUPLED TO SAID RESONANT CAVITY, SAID MIXER BEING POSITIONED IN SAID TRANSMISSION LINE WHEREBY RADIO FREQUENCY ENERGY FROM SAID ROSONANT CAVITY IS TRANSMITTED TO SAID MIXER, MEANS TO INJECT LOCAL OSCILLATOR FREQUENCY ENERGY TO BE PROPAGATED BY SAID TRANSMISSION LINE, SAID LAST-NAMED MEANS COMPRISING MEANS TO PREVENT SUBSTANTIAL LOSS OF RF INPUT ENERGY, IF OUTPUT MEANS DISPOSED AT THE OUTPUT OF SAID MIXER, AND OPEN CIRCUIT IMAGE HARMONIC TERMINATIONS MEANS AT SAID MIXER WHEREBY CONVERSION MAY BE EFFECTED WITH MINIMUM CONVERSION LOSS.
Claim 2
Dependent Claim
106 words
A LOW NOISE CRYSTAL MIXER CIRCUIT COMPRISING A RESONANT CAVITY TUNED TO INCOMING RADIO FREQUENCY ENERGY INPUT, A CRYSTAL DIODE MIXER, A TRANSMISSION LINE COUPLED TO SAID RESONANT CAVITY, SAID MIXER BEING POSITIONED IN SAID TRANSMISSION LINE WHEREBY RADIO FREQUENCY ENERGY FROM SAID ROSONANT CAVITY IS TRANSMITTED TO SAID MIXER, MEANS TO INJECT LOCAL OSCILLATOR FREQUENCY ENERGY TO BE PROPAGATED BY SAID TRANSMISSION LINE, SAID LAST-NAMED MEANS COMPRISING MEANS TO PREVENT SUBSTANTIAL LOSS OF RF INPUT ENERGY, IF OUTPUT MEANS DISPOSED AT THE OUTPUT OF SAID MIXER, AND OPEN CIRCUIT IMAGE HARMONIC TERMINATIONS MEANS AT SAID MIXER WHEREBY CONVERSION MAY BE EFFECTED WITH MINIMUM CONVERSION LOSS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |