Claims
- 1. A loop antenna circuit comprising:
conductor having a first loop segment and a second loop segment; and polarity changing means serially connected between the first and second loop segments for reducing reactive voltage on the conductor.
- 2. The circuit of claim 1 wherein the polarity changing means is a capacitor.
- 3. The circuit of claim 1 wherein the loop antenna circuit is employed in a cordless input device.
- 4. The circuit of claim 1 wherein the loop antenna circuit is employed in a receiver unit of a cordless device.
- 5. The circuit of claim 1 wherein the loop antenna circuit is employed in at least one of a cordless mouse, a cordless mouse receiver, a cordless keyboard or a cordless keyboard receiver.
- 6. A loop antenna circuit comprising:
conductor having a first loop turn and a second loop turn that is adjacent to the first loop turn; and polarity changing means serially connected between the first and second loop turns for reducing reactive voltage difference between the two turns.
- 7. The circuit of claim 6 wherein the polarity changing device is a capacitor.
- 8. The circuit of claim 6 wherein the first and second loop turns are adjacent to each other through a printed circuit board.
- 9. The circuit of claim 6 wherein the loop antenna circuit is employed in a cordless input device.
- 10. The circuit of claim 6 wherein the loop antenna circuit is employed in a receiver unit of a cordless device.
- 11. The circuit of claim 6 wherein the loop antenna circuit is employed in at least one of a cordless mouse, a cordless mouse receiver, a cordless keyboard or a cordless keyboard receiver.
- 12. A loop antenna circuit comprising:
conductor having a plurality of loop segments that comprise a length of the conductor; and number of polarity changing means, each of the polarity changing means serially connected between a corresponding pair of loop segments, each polarity changing means having a reactive voltage that nulls a portion of a reactive voltage on the conductor.
- 13. The circuit of claim 12 wherein the loop antenna circuit is employed in a cordless input device.
- 14. The circuit of claim 12 wherein the loop antenna circuit is employed in a receiver unit of a cordless device.
- 15. The circuit of claim 12 wherein the loop antenna circuit is employed in at least one of a cordless mouse, a cordless mouse receiver, a cordless keyboard or a cordless keyboard receiver.
- 16. A loop antenna circuit comprising:
conductor having a first loop segment and a second loop segment, each loop segment having an inner end and an outer end, the conductor having an inductive reactance and a reactive voltage, the conductor for at least one of receiving and generating radiation information; a first capacitive reactance connected serially between the inner ends of the first and second loop segments of the conductor, the first capacitive reactance for providing a first reactive voltage that substantially nulls a first component of the reactive voltage of the conductor thereby leaving a remaining component of the reactive voltage of the conductor; and a second capacitive reactance connected across the outer ends of the first and second loop segments, the second capacitive reactance for providing a second reactive voltage that substantially nulls the remaining component of the reactive voltage of the conductor.
- 17. A loop antenna circuit comprising:
a conductor having a first loop segment and a second loop segment, each loop segment having an inner end and an outer end, the conductor having an inductive reactance and a reactive voltage, the conductor for at least one of receiving and generating radiation information; a first capacitive reactance connected serially between the inner ends of the first and second loop segments, the first capacitive reactance for providing a first reactive voltage that substantially nulls a first component of the reactive voltage of the conductor thereby leaving a remaining component of the reactive voltage of the conductor; a second capacitive reactance connected serially along the outer end of the first loop segment of the conductor; a third capacitive reactance connected serially along the outer end of the second loop segment of the conductor; and fourth capacitive reactance connected across the serial combination of the second capacitive reactance, the first loop segment, the first capacitive reactance, the second loop segment and the third capacitive reactance.
- 18. A loop antenna circuit comprising:
conductor having a reactive voltage, and a plurality of loop segments, where a first loop segment and a second loop segment are adjacent to each other, the conductor being for at least one of receiving or generating radiation information; and capacitive reactance that has a reactive voltage that nulls a portion of the reactive voltage of the conductor, the capacitive reactance being serially connected between the first loop segment and the second loop segment.
- 19. The circuit of claim 18 wherein the loop antenna circuit is employed in at least one of a cordless input device or a cordless receiver unit of a cordless device.
- 20. The circuit of claim 18 wherein the loop antenna circuit is employed in at least one of a cordless mouse, a cordless mouse receiver, a cordless keyboard or a cordless keyboard receiver.
RELATED APPLICATIONS
[0001] This application is a continuation application of U.S. patent application Ser. No. 09/452,567, now U.S. Pat. No. ______, which is herein incorporated in its entirety by reference.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09452567 |
Dec 1999 |
US |
Child |
09997338 |
Nov 2001 |
US |