Coil loaded antenna embedded in glass fibre

• US 4,300,140 A
• Filed: 04/02/1980
• Issued: 11/10/1981
• Est. Priority Date: 02/26/1980
• Status: Expired due to Term

• Current Assignee: Valcom Incorporated
• Original Assignee: Valcom Incorporated
• Inventors: Brandigampola, Don E.
• Primary Examiner(s): Lieberman, Eli
• Application Number:
  US06/136,694
• Time in Patent Office: 587 Days
• Field of Search: 343/715, 343/749, 343/895, 343/900, 343/872, 343/873
• US Class Current: 343/873
• CPC Class Codes: H01Q 1/40 Radiating elements coated with or embedded in protective material
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence

Abstract

A freestanding glass fibre antenna having at least two antenna sections, a lower section having a mounting base and a coupling at the upper end, and having linear radiating members of conductive material, and an upper section having a cooperating coupling at the lower end, and incorporating a single radiating element formed of conductive material, arranged in a helically wound coil fashion having a plurality of turns, and embedded permanently in the glass fibre material of such antenna, the coil wound radiating element being arranged to tune the antenna to the desired frequency range.

Claims

1. A free standing glass fibre antenna which comprises:

at least two elongated antenna sections;

a mounting base at the lower end of a lower said antenna section;

mating electrically conductive male and female couplings interconnecting said antenna sections;

conductive radiating element means embedded in a lower one of said sections;

a single radiating element means of electrically conductive material arranged in a helically wound coil manner and having a plurality of turns, embedded in the glass fibre material of an upper one of such sections, and,

connector portions at each end of said single coil wound radiating element adjacent respective said couplings, and terminally connected to a respective one of said male and female couplings;

at least one other conductive member secured to said coil wound radiating element means at each end thereof and in turn connected to respective ones of said couplings whereby said radiating element means of all said antenna sections are electrically interconnected through said male and female couplings to provide a single and continuous electrical radiating structure.

2. A free standing glass fibre antenna as claimed in claim 1 and in which said radiating elements in said antenna sections are terminally connected to respective ones of said male and female couplings at a plurality of positions around each such coupling.

3. A free standing glass fibre antenna as claimed in claim 1 and in which said male and female couplings are adapted threadingly to interengage each other.

4. A free standing glass fibre antenna as claimed in claim 3 and which additionally comprises locking means between each pair of antenna sections for the purpose of preventing disengagement of said male and female couplings thereat.

5. A free standing glass fibre antenna as claimed in claim 4 and in which indicia are provided externally on end portions of adjacent antenna sections to indicate proper interengagement of said male and female couplings.

6. A free standing glass fibre antenna as claimed in claim 1 wherein there are at least three antenna sections, and wherein said coil wound radiating element means is located in the section next adjacent the base section.