Precision microwave delay circuit and method

Details Precision microwave delay circuit and method Precision microwave delay circuit and method

1978-01-23

1979-07-03

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

29600, 333246, H01P 118, H01P 1100, H01P 308

Patent

active

041602200

ABSTRACT:
A resistive material in the evanescent field of a transmission line, such as microstrip line, is employed to vernier adjust the phase delay introduced by the line. While the phase delay is being measured, the position of the resistive material, which is being held in place by cement which has not yet set, is altered, until the precise phase delay desired is reached, and then the cement is permitted to harden. The resistive material employed is of the type normally used as an absorber, such as Eccosorb, and its resonant frequency is a fraction of the signal frequency.

REFERENCES:
patent: 3136946 (1964-06-01), Levine
patent: 3581245 (1971-05-01), Ohi
patent: 3585533 (1971-06-01), Denhard
patent: 3656179 (1972-04-01), Deloach

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