Claims
- 1. An antenna system for receiving transmitted signals, comprising:
- a spiral antenna including two interleaved radiating elements, said radiating elements each originating at an inner termination point of said spiral antenna and spiralling outwardly in a spiral path to an outer termination point of said spiral antenna;
- a dipole antenna including two elements, each of said elements of said dipole antenna being coupled to a corresponding one of said outer termination points of said spiral antenna;
- wherein said spiral antenna further includes spiral extensions disposed along a spiral curve defined by said spiral antenna, connected to and continuing beyond said outer termination points of said spiral antenna.
- 2. An antenna system according to claim 1 wherein said dipole antenna is a half-wave dipole antenna.
- 3. An antenna system according to claim 2 wherein said spiral antenna is an Archimedes spiral antenna.
- 4. An antenna system according to claim 3, further comprising transmission lines coupled to said Archimedes spiral antenna at said inner termination points.
- 5. An antenna system according to claim 1 wherein said spiral extensions extend approximately a quarter-turn beyond said outer termination points of said spiral antenna.
- 6. An antenna system according to claim 5 wherein said dipole antenna is a half-wave dipole antenna.
- 7. An antenna system according to claim 6 wherein said spiral antenna is an Archimedes spiral antenna.
- 8. An antenna system according to claim 7, further comprising transmission lines coupled to said Archimedes spiral antenna at said inner termination points.
- 9. An antenna system according to claim 1 wherein the antenna system operates in a frequency range of 50 MHz to 5,000 MHz.
Parent Case Info
This application is a continuation of application Ser. No. 07/645,585, filed on Jan. 24, 1991, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0083901 |
May 1982 |
JPX |
1294831 |
Nov 1972 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
645585 |
|
|