Ring resonator and antenna
First Claim
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1. A ring resonator comprising:
- a first TEM transmission line formed on a first side of a dielectric substrate; and
a second TEM transmission line formed on a second side of said dielectric substrate opposite said first transmission line, a first end of said first transmission line, having opposite polarity of, and being coupled to, a second end of said second transmission line, and a second end of said first transmission line, having opposite polarity of, and being coupled to, a first end of said second transmission line.
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Abstract
Two conducting lines are arranged in a ring form in a TEM-mode transmission line. The end of one of the lines is connected to the end of the other line with opposite polarity, thus forming a resonator for resonation in a half-wavelength mode. This structure, free of line discontinuity which lowers the Q value, can provide a resonator having a high Q value equivalent to that of the one-wavelength resonator. Moreover, it is satisfactory to provide a half of a length of the one-wavelength resonator. Accordingly, the structure of the resonator has reduced size but little Q-value deterioration.
30 Citations
12 Claims
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1. A ring resonator comprising:
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a first TEM transmission line formed on a first side of a dielectric substrate; and
a second TEM transmission line formed on a second side of said dielectric substrate opposite said first transmission line, a first end of said first transmission line, having opposite polarity of, and being coupled to, a second end of said second transmission line, and a second end of said first transmission line, having opposite polarity of, and being coupled to, a first end of said second transmission line. - View Dependent Claims (2, 3, 4)
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5. A ring antenna comprising:
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a ring shaped TEM transmission line arranged on a dielectric substrate, said ring shaped TEM transmission line including, a first transmission line having a terminal a and a terminal c;
a second transmission line having a terminal b and a terminal d; and
a balun having a first balanced terminal and a second balanced terminal, said terminal b being coupled to said terminal c, said first balanced terminal being coupled to said terminal a, said second balanced terminal being coupled to said terminal d, and an unbalanced terminal of said balun being provided as a feeder terminal to said ring antenna. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A ring antenna comprising:
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a ring shaped TEM transmission line arranged on a dielectric substrate, said ring shaped TEM transmission line including a first transmission line and a second transmission line, a first end of said first transmission line, having opposite polarity of, and being coupled to, a second end of said second transmission line, and a second end of said first transmission line, having opposite polarity of, and being coupled to, a first end of said second transmission line.
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Specification