US4222113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmit-receive switching unit
Assignee: Danfoss AS
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Filing: 1978-12-06
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Granted: 1980-09-09
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Expires: 1998-12-06
Abstract
Abstract The invention relates to a transmit/receive switching unit for use between a transmit/receive converter and the transmission line of a transmit/receive device having a voltage source. The unit has transmitting and receiving channels with the receiving channel having a signal amplifier. An energy storage element such as a capacitor stores a part of the transmission energy on a continuing basis for operating the signal amplifier in the receiving channel. This scheme saves having to provide a separate line from a voltage source to the amplifier.
Inventors
- 👤 Henning M. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/52003; Y; Y10; Y10S; Y10S367/00; Y10S367/903
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A transmit/receive switching unit for installation between a transmit/receive converter and a transmission line of a transmit/receive device with a voltage source, comprising, transmitting and receiving terminals, transmission and receiving channels between said terminals, said receiving channel having signal amplifier means, and energy storage means for storing a part of the transmission energy of transmitting signals for operating said amplifier means.
Claim 2
Dependent Claim
61 words
A transmit/receive switching unit for installation between a transmit/receive converter and a transmission line of a transmit/receive device with a voltage source, comprising, transmitting and receiving terminals, transmission and receiving channels between said terminals, said receiving channel having signal amplifier means, and energy storage means for storing a part of the transmission energy of transmitting signals for operating said amplifier means.
Claim 3
Dependent Claim
15 words
A transmit/receive unit according to claim 1 wherein said energy storage means includes a capacitor.
Claim 4
Dependent Claim
20 words
A transmit/receive unit according to claim 2 wherein said energy storage means includes a rectifier in series with said capacitor.
Claim 5
Dependent Claim
47 words
A transmit/receive unit according to claim 1 including transformer means common to said transmitting and receiving channels and being connected to said transmitting terminal for stepping up the trasmitting signal, said energy storage means also being connected to said transmitting terminal in branching relationship to said transformer.
Claim 6
Dependent Claim
14 words
A transmit/receive unit according to claim 4 wherein said transformer means is an autotransformer.
References Cited (Backward Citations)
US3227954A
Cited
US4158781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |