04641317 is referenced by 187 patents and cites 4 patents.

A communications system wherein an intelligence signal modulates the spacing of relatively narrow pulses of a fixed rate pulse train, and these pulses key on a transmitter which employs a pair of series connected avalanche mode operated transistors. These are repetitively powered via a charged coaxial delay line, and the output, appearing across a resistive load, is fed directly, or through a shaping filter, to a discone transmitting antenna. At a receiving location, the received signal is amplified by a wide band amplifier and fed through a reverse contoured filter (of the transmitting filter, if one is employed). The signal is detected via synchronous detection which locks onto the received pulse train, after which the modulation evidence by the pulse train is recovered by a low pass filter.

Title
Spread spectrum radio transmission system
Application Number
6/677597
Publication Number
4641317
Application Date
December 3, 1984
Publication Date
February 3, 1987
Inventor
Larry W Fullerton
Huntsville
AL, US
Agent
C A Phillips
Assignee
Charles A Phillips
TN, US
IPC
H04L 27/30
H04K 1/00
H04B 15/00
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