US3728632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission and reception system for generating and receiving base-band pulse duration pulse signals without distortion for short base-band communication system
Assignee: Unisys Corp
•
Filing: 1971-03-12
•
Granted: 1973-04-17
•
Expires: 1991-03-12
Abstract
Abstract An electromagnetic signal communication system utilizing short base-band pulse signals of sub-nanosecond duration employs dispersionless, broad band antenna transmission line elements for generating and preserving the character of the short base-band pulses in respective transmitter and receiver sub-systems.
Inventors
- 👤 G Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:55
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/005; H01Q13/00; H01Q13/08; H04; H04B; H04B7/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
61 words
The combination comprising: transmitter means for transmitting a base-band signal, receiver means having substantially non-dispersive TEM-mode transmission line means for receiving said base-band signal, pulse forming detector means directly responsive to said substantially non-dispersive TEM-mode transmission line means for producing an output signal of substantially greater duration than said base-band signal, and utilization means responsive to said greater duration output signal.
Claim 2
Dependent Claim
61 words
The combination comprising: transmitter means for transmitting a base-band signal, receiver means having substantially non-dispersive TEM-mode transmission line means for receiving said base-band signal, pulse forming detector means directly responsive to said substantially non-dispersive TEM-mode transmission line means for producing an output signal of substantially greater duration than said base-band signal, and utilization means responsive to said greater duration output signal.
Claim 3
Dependent Claim
49 words
Apparatus as described in claim 1 wherein said transmitter means includes means for transmitting without distortion, a subnanosecond duration electromagnetic Pulse having a base-band frequency range spectral line content, the energy in any selected one of said spectral lines being below the ambient noise level at said receiver means.
Claim 4
Dependent Claim
44 words
Apparatus as described in claim 2 wherein said pulse forming detector means responsive to said substantially non-dispersive TEM-mode transmission line means comprises semiconductor diode means having first and second states and coupled in energy exchanging relation with said substantially non-dispersive TEM-mode transmission line means.
Claim 5
Dependent Claim
109 words
Apparatus as described in claim 3 wherein said pulse forming detector means responsive to said substantially non-dispersive TEM-mode transmission line means comprises: first circuit means biasing said semiconductor diode means in said first state for permitting said semiconductor diode means to change from its said first to its said second state instantaneously upon arrival at said semiconductor diode means of said subnanosecond duration electromagnetic pulse in substantially undistorted form, second circuit means coupled to said first circuit means for producing said greater duration output signal, and third circuit means utilizing a version of said extended duration output signal for returning said semiconductor diode means to its said first state.
Claim 6
Dependent Claim
41 words
Apparatus as described in claim 2 wherein said pulse forming detector means is biased to respond substantially instantaneously upon receipt by said receiver means of a base-band signal whose amplitude exceeds a predetermined amplitude for producing said greater duration output signal.
Claim 7
Dependent Claim
76 words
Communication means comprising: transmitter means for transmitting a train of subnanosecond duration base-band electromagnetic pulses, receiver means having substantially non-dispersive TEM-mode transmission line means for receiving said train of subnanosecond duration base-band electromagnetic pulses, pulse forming detector means directly responsive to said substantially non-dispersive transmission line means for producing an output train of non-overlapping pulses each of greater duration than each of said subnanosecond duration electromagnetic pulses, and utilization means responsive to said output pulse train.
Claim 8
Dependent Claim
76 words
Communication means comprising: transmitter means for transmitting a train of subnanosecond duration base-band electromagnetic pulses, receiver means having substantially non-dispersive TEM-mode transmission line means for receiving said train of subnanosecond duration base-band electromagnetic pulses, pulse forming detector means directly responsive to said substantially non-dispersive transmission line means for producing an output train of non-overlapping pulses each of greater duration than each of said subnanosecond duration electromagnetic pulses, and utilization means responsive to said output pulse train.
Claim 9
Dependent Claim
27 words
Apparatus as described in claim 6 wherein said utilization means responsive to said output pulse train includes means for abstracting intelligence signals from said output pulse train.
Claim 10
Dependent Claim
15 words
Apparatus as described in claim 7 including display means for displaying said abstracted intelligence signals.
References Cited (Backward Citations)
US3098973A
Cited
US3587107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |