Patent US3244998A successfully refreshed from Google Patents.
US3244998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impedance matched broad band transistor amplifier
Assignee: Collins Radio Co
•
Filing: 1963-07-10
•
Granted: 1966-04-05
•
Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel L Broadhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:05
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/60; H03F1/00; H03F1/42; H03F1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
234 words
IN A BROAD BAND AMPLIFIER INCLUDING A MULTI-ELEMENT AMPLIFYING DEVICE, SIGNAL INPUT MEANS TO THE DEVICE, VOLTAGE BIASING MEANS FOR SAID DEVICE AND FOR THE AMPLIFIER, WITH ONE OF THE ELEMENTS OF SAID MULTI-ELEMENT AMPLIFYING DEVIVE BEING A SIGNAL OUTPUT ELEMENTS OF THE DEVICE AND HAVING PREDETERMINED IMPEDANCE CHARACTERISTICS, AND WITH THE AMPLIFIER CONNECTED TO A LOAD HAVING PREDETERMINED IMPEDANCE CHARACTERISTICS; TRANSMISSION LINE MEANS CONNECTED BETWEEN THE SIGNAL OUTPUT ELEMENT OF SAID DEVICE AND THE LOAD, WITH SAID TRANSMISSION LINE MEANS HAVING PROPER IMPEDANCE TRANSFORMATION CHARACTERISITCS FOR CORRECT IMPEDANCE MATCHING TO SAID SIGNAL OUTPUT ELEMENT AT THE TRANSIMSSION LINE MEANS CONNECTED WITH THE SIGNAL OUTPUT ELEMENT AND FOR CORRECT IMPEDANCE MATCHING WITH THE LOAD; WITH TRANSFORMER HAVING RELATIVELY CLOSELY WITH THE LOAD; WITH SAID TRANSMISSION LINE MEANS INCLUDING: A FIRST TRANSFORMER HAVING RELATIVELY CLOSELY COUPLED PRIMARY AND SECONDARY COILS IN A FIRST TRANSMISSION LINE SECTION WITH THE TRANSFORMER HAVING AN INPUT CONNECTION FROM SAID SIGNAL OUTPUT ELEMENT OF THE MULTIELEMENT AMPLIFYING DEVICE TO THE PRIMARY COIL OF THE TRANSFORMER AND THE OUTPUT TERMINAL OF THE PRIMARY COIL BEING CONNECTED TO THE END TERMINAL OF THE SECONDARY COIL OF SAID TRANSFORMER CLOSEST TO THE INPUT TERMINAL OF THE PRIMARY COIL AND THROUGH THE SECONDARY COL OF THE TRANSFORMER TO AND THROUGH FIRST CAPACITIVE MEANS TO GROUND; AND WITH THE OUTPUT TERMINAL OF SAID PRIMARY COIL BEING AN OUTPUT TERMINAL OF SAID FIRST TRANSMISSION LINE SECTION.
Claim 2
Dependent Claim
234 words
IN A BROAD BAND AMPLIFIER INCLUDING A MULTI-ELEMENT AMPLIFYING DEVICE, SIGNAL INPUT MEANS TO THE DEVICE, VOLTAGE BIASING MEANS FOR SAID DEVICE AND FOR THE AMPLIFIER, WITH ONE OF THE ELEMENTS OF SAID MULTI-ELEMENT AMPLIFYING DEVIVE BEING A SIGNAL OUTPUT ELEMENTS OF THE DEVICE AND HAVING PREDETERMINED IMPEDANCE CHARACTERISTICS, AND WITH THE AMPLIFIER CONNECTED TO A LOAD HAVING PREDETERMINED IMPEDANCE CHARACTERISTICS; TRANSMISSION LINE MEANS CONNECTED BETWEEN THE SIGNAL OUTPUT ELEMENT OF SAID DEVICE AND THE LOAD, WITH SAID TRANSMISSION LINE MEANS HAVING PROPER IMPEDANCE TRANSFORMATION CHARACTERISITCS FOR CORRECT IMPEDANCE MATCHING TO SAID SIGNAL OUTPUT ELEMENT AT THE TRANSIMSSION LINE MEANS CONNECTED WITH THE SIGNAL OUTPUT ELEMENT AND FOR CORRECT IMPEDANCE MATCHING WITH THE LOAD; WITH TRANSFORMER HAVING RELATIVELY CLOSELY WITH THE LOAD; WITH SAID TRANSMISSION LINE MEANS INCLUDING: A FIRST TRANSFORMER HAVING RELATIVELY CLOSELY COUPLED PRIMARY AND SECONDARY COILS IN A FIRST TRANSMISSION LINE SECTION WITH THE TRANSFORMER HAVING AN INPUT CONNECTION FROM SAID SIGNAL OUTPUT ELEMENT OF THE MULTIELEMENT AMPLIFYING DEVICE TO THE PRIMARY COIL OF THE TRANSFORMER AND THE OUTPUT TERMINAL OF THE PRIMARY COIL BEING CONNECTED TO THE END TERMINAL OF THE SECONDARY COIL OF SAID TRANSFORMER CLOSEST TO THE INPUT TERMINAL OF THE PRIMARY COIL AND THROUGH THE SECONDARY COL OF THE TRANSFORMER TO AND THROUGH FIRST CAPACITIVE MEANS TO GROUND; AND WITH THE OUTPUT TERMINAL OF SAID PRIMARY COIL BEING AN OUTPUT TERMINAL OF SAID FIRST TRANSMISSION LINE SECTION.
References Cited (Backward Citations)
US2125119A
Cited
US2284529A
Cited
US2326519A
Cited
US2524821A
Cited
US2463229A
Cited
US2642539A
Cited
US2961578A
Cited
US2957143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |