Miniature antenna
First Claim
1. A miniature antenna, comprising:
- a pair of square conductor plates disposed in parallel with a spacing sufficiently smaller than a wavelength used and fixed to each other to an insulating frame to form an antenna structure which is used also as a case;
feed terminal means provided at a a pair of opposed positions on one of opposed sides of the conductor plates;
short-circuit elements, provided at a plurality of positions on other opposed sides of the conductor plates to short-circuit in high frequency-wise;
a gravity-direction sensor disposed in the case to produce an output in accordance with the direction of gravity with respect to a plane along any of the conductor platesto selectively short circuit said short-circuit elements by the output of the gravity-direction sensor so that a plane of polarization established by a seated state antenna is brought into agreement with the direction of gravity.
2 Assignments
0 Petitions
Accused Products
Abstract
A miniature antenna, in which a pair of square conductor plates disposed in parallel with a spacing sufficiently smaller than the wavelength used are fixed to each other to an insulating frame to form an antenna structure which is used also as a case. Feeding terminals are provided at a desired position on one side of each of the conductor plates. High-frequency-wise short-circuit elements are provided at a plurality of positions on other sides of the conductor plates. A gravity-direction sensor, which produces an output in accordance with the direction of gravity, is provided in the case. The plurality of short-circuit elements are selectively short-circuited by the output of the gravity-direction sensor so that the plane of polarization of the antenna is brought into agreement with the direction of gravity.
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Citations
3 Claims
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1. A miniature antenna, comprising:
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a pair of square conductor plates disposed in parallel with a spacing sufficiently smaller than a wavelength used and fixed to each other to an insulating frame to form an antenna structure which is used also as a case; feed terminal means provided at a a pair of opposed positions on one of opposed sides of the conductor plates; short-circuit elements, provided at a plurality of positions on other opposed sides of the conductor plates to short-circuit in high frequency-wise; a gravity-direction sensor disposed in the case to produce an output in accordance with the direction of gravity with respect to a plane along any of the conductor plates to selectively short circuit said short-circuit elements by the output of the gravity-direction sensor so that a plane of polarization established by a seated state antenna is brought into agreement with the direction of gravity. - View Dependent Claims (2, 3)
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Specification