Pulse or digital communications – Repeaters – Testing
Patent
1988-08-09
1991-10-08
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
350 9614, 455609, H04L 2700
Patent
active
050561111
ABSTRACT:
A communication system for transmitting and receiving terahertz signals has a emitter employing a resonant radiating structure connected to an ultrafast switch. The switch is a subpicosecond photoconducting switch coupled to a coplanar transmission line having a pair of approximately 1 micron wide A1 lines deposited on an SOS substrate. The transmission line is separated from the tip of the radiating structure by a photoconducting gap forming the switch and is driven by a laser pulse. Utilizing the gap excitation principle, the transmitting antenna radiates a freely propagating signal that may be received by an identical structure either on the same or on different substrates.
REFERENCES:
patent: 4482863 (1984-11-01), Auston
Applied Physics Letters 48(12), Mar. 24, 1986, "Generation of Subpicosecond Electrical Pulses on Coplanar Transmission Lines", pp. 751-753, Ketchen et al.
Physical Review Letters, vol. 53, No. 16, Oct. 14, 1984, pp. 1555-1558, Auston et al., "Cherenkov Radiation from Femtosecond Optical Pulses in Electro-Optic Media".
Applied Physics Letters, 43(8), Oct. 15, 1983, pp. 713-715, Auston et al, "Subpicosecond Electro-Optic Shock Waves".
Duling, III Irl N.
Grischkowsky Daniel R.
Halbout Jean-Marc
Ketchen Mark B.
IBM Corporation
Safourek Benedict V.
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