Claims
- 1. A broadband transmit/receive antenna, comprising:a substrate having a first face and a second face; a conductive layer disposed on said first face forming a transmitting radiator portion including a first tapered notch and a receiving portion including a second tapered notch; and first and second conductive lines formed on said second face forming first and second transmission lines, said first transmission line electrically coupled to said transmitting radiator portion at a first feed point and said second transmission line electrically coupled to said receiving portion at a second feed point.
- 2. The broadband antenna of claim 1 where each of said tapered notches comprise a size and a shape which determines an operating frequency range.
- 3. The broadband antenna of claim 2 where said notch shape comprises a quadrant of a circle.
- 4. The broadband antenna of claim 2 where said notch shape comprises an exponential notch.
- 5. The broadband antenna of claim 2 further comprising a predominantly omnidirectional radiation pattern generated by said antenna having a surface area for said substrate which approximates or is less than 0.6 times the square of a center wavelength for said operating frequency range.
- 6. The broadband antenna of claim 5 having said omnidirectional radiation pattern comprising a frequency range of 2.5 GHz to 5.0 GHz and said substrate having a length of 80 mm and width of 80 mm.
- 7. The broadband antenna of claim 5 having said omnidirectional radiation pattern comprising a frequency range of 2.5 GHz to 5.0 GHz and said substrate having a length of 135 mm and width of 60 mm.
- 8. The broadband antenna of claim 2 further comprising a predominantly directional radiation pattern generated by said antenna having a surface area for said substrate which is substantially greater than 0.6 times the square of a center wavelength for said operating frequency range.
- 9. The broadband antenna of claim 2 further comprising an integrated circuit resident on said second face resistively coupled to said first and said second conductive lines.
- 10. The broadband antenna of claim 9 further comprises a plurality of pulsed signals being transmitted and received by said integrated circuit.
- 11. The broadband antenna of claim 10 where said pulsed signal comprising a plurality of spread spectrum signals which are transmitted or received by said antenna.
- 12. The broadband antenna of claim 2 where each of said conductive lines further comprises a capacitive coupling to each of said first and said second tapered notches.
- 13. The broadband antenna of claim 12 where each of said conductive lines further comprises a radial stub at the end of each of said conductive lines which is capacitively coupled to said first tapered notch and said second tapered notch.
- 14. The broadband antenna of claim 2 where said conductive layer further includes a stop notch disposed between said first tapered notch and said second tapered notch for separating said transmitting portion of the antenna from said receiving portion of the antenna.
- 15. The broadband antenna of claim 2 further comprising an impedance matching circuit generated by locating each conductive line at an appropriate location with respect to each of said tapered notches.
- 16. A method for transmitting and receiving pulsed signals from a single antenna, comprising:providing a transmit/receive antenna having a substrate with a first face and second face on which a conductive layer disposed on said first face forming a transmitting radiator portion and a second receiving portion; transmitting signals from said transmit portion; receiving signals from said receiving portion; and defining an operating frequency range by manipulating the size and shape of said transmitting radiator portion and receiving portion in a tapered notch configuration.
- 17. The method for transmitting and receiving signals as recited in claim 16, further comprising communicating a predominantly omnidirectional radiation pattern by generating a surface area for said first face and said second face which approximates or is less than 0.6 times the square of a center wavelength for said operating frequency.
- 18. The method for transmitting and receiving signals as recited in claim 17, further comprising communicating a predominantly directional radiation pattern by generating a surface area for said first face and said second face which is substantially greater than 0.6 times the square of a center wavelength for said operating frequency.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of U.S. application Ser. No. 09/384,952 filed Aug. 27, 1999.
US Referenced Citations (8)
Continuations (1)
|
Number |
Date |
Country |
Parent |
09/384952 |
Aug 1999 |
US |
Child |
09/692906 |
|
US |