Patent US 3629731A

Patent number	US 3629731A (click link for details and documents via Google Patents)
Title	Sampling system
Inventors	George Frye
Company	Tektronix Inc
Filing date	1968-07-12
Grant date	1971-12-21

Cited By:

Patent	Title	Inventors	Assignee	Granted
Patent US 4647795A	Travelling wave sampler	Agoston Agoston	Tektronix Inc	1987-03-03

Related products:

Manufacturer	Model	Description	Introduced	Designers
Tektronix	S-4	Sampling Head	1968	George Frye
Tektronix	S-6	Sampling Head	1971

Describes the six-diode traveling-wave sampler implemented in the S-4 and S-6 sampling heads. George Frye refers to this circuit as a "velocity gate" due to the fact that it relies only on the sampling pulse having high dv/dt. In contrast, four-diode and two-diode sampling gates rely on the sampling pulse having high d²v/dt² in order to turn the sampling gate on and then off within a tiny duration.

See also George Frye's Explanation of the S-4 sampler in Service Scope, October 1968.