TRANSMISSION AND RECEPTION SYSTEM FOR GENERATING AND RECEIVING BASE-BAND PULSE DURATION PULSE SIGNALS WITHOUT DISTORTION FOR SHORT BASE-BAND COMMUNICATION SYSTEM

• US 3,728,632 A
• Filed: 03/12/1971
• Issued: 04/17/1973
• Est. Priority Date: 03/12/1971
• Status: Expired due to Term

• Current Assignee: Gerald F. Ross
• Original Assignee: Gerald F. Ross
• Inventors: Ross, Gerald F.
• Primary Examiner(s): Mayer, Albert J.
• Application Number:
  US05/123,533
• Time in Patent Office: 767 Days
• Field of Search: 325/27,38R,43,105-107,129,130,141,325,375,377,386 328/59,66-68,78 329/103,126,161,162,104 333/12,13,19,32,34 343/701,753,773,778,786,822,850,852,904-906,908,912-914,739
• US Class Current: 375/256
• CPC Class Codes: H01Q 13/08 Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
• CPC Class Codes: H01Q 9/005 for radiating non-sinusoidal waves
• CPC Class Codes: H04B 7/00 Radio transmission systems, i.e. using radiation field H04B10/00, H04B15/00 take precedence

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.

Claims

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. Apparatus as described in claim 7 including display means for displaying said abstracted intelligence signals.