Abstract An impedance simulator having the capability of simulating the operational impedance characteristics of a whip antenna in open field throughout a given frequency range. The simulator includes a cylindrical chamber of conductive, non-magnetic material coated on the interior surface with a lossy ferrite material. Coaxially mounted on the interior of the chamber is a coaxial conductor having at one end thereof a coaxial connector. The other end of the coaxial conductor has the center conductor thereof extending beyond the end of the outer conductor. This end of the inner conductor has mounted thereon a metallic disk lying in a plane perpendicular to the axis of the coaxial conductor. The utilization device, such as an r-f power source is attached to the coaxial connector. The assembly presents to the utilization device an impedance similar to that of a whip antenna in open field.
Inventors
👤 Watson P Czerwinski
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-03 22:49
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
An impedance simulator for simulating the impedance of a whip antenna in open space over a selected frequency band comprising: a coaxial conductor having an outer conductor and an inner conductor, said inner conductor having an exposed portion extending beyond one end of said outer conductor; a conductive disk mounted on the end of said exposed portion of said inner conductor, said conductive disk lying in a plane transverse to the axis of said coaxial conductor; and a shield formed from a conductive material spaced from and substantially surrounding said coaxial conductor and said conductive disk, a substantial area of the interior surface of said shield being coated with a ferrite material.
Claim 2
Dependent Claim
112 words
An impedance simulator for simulating the impedance of a whip antenna in open space over a selected frequency band comprising: a coaxial conductor having an outer conductor and an inner conductor, said inner conductor having an exposed portion extending beyond one end of said outer conductor; a conductive disk mounted on the end of said exposed portion of said inner conductor, said conductive disk lying in a plane transverse to the axis of said coaxial conductor; and a shield formed from a conductive material spaced from and substantially surrounding said coaxial conductor and said conductive disk, a substantial area of the interior surface of said shield being coated with a ferrite material.
Claim 3
Dependent Claim
24 words
The device according to claim 1 and wherein said shield includes a cylindrical wall of non-magnetic material having first and second conductive end plates.
Claim 4
Dependent Claim
20 words
The device according to claim 2 and wherein said conductive disk is perpendicular to the axis of said coaxial conductor.