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| We claim: 1. A wheelchair comprising: a pair of larger ground-engaging wheels mounted on opposite ... |
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| Electrically powered vehicle control |
| The present invention relates to electric vehicles and, more particularly, to controls for ... |
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| Cross-coupling drive circuit |
| The present invention is an improved drive circuit for steering a motorized wheelchair. A control ... |
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| Apparatus and method for enhancing torque of power wheelchair |
| In the present invention, a motor-torque-sensitive signal is obtained during a small part of the ... |
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| Abnormality detecting device for vehicle communication system and method of using same |
| In view of the above-mentioned problems, the present invention has as an object the provision of an ... |
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| Wheelchair aerobic exercise trainer |
| The present invention is an aerobic wheelchair trainer. The wheelchair trainer may be used by a ... |
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| Electrically assisted vehicle |
| This invention was made in view of the problems described above, and an object of the invention is ... |
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| Power assisted manually propelled vehicle and wheel assembly thereof |
| The present invention is drawn to a power assisted manually propelled vehicle and a power assisted ... |
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| Wheel chair with auxiliary power |
| To accomplish the above-described object, the invention of claim 1 is directed to a power-assisted ... |
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| Variable speed limit system |
| It is an object of the present invention to obviate or mitigate at least one disadvantage of ... |
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Antenna apparatus
| Details |
Inventors: Kojima, Jou; Tohya, Ken-I-Chi; Yamamoto, Naoto;
Assignee: Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Wong; Don
Assistant Examiner: Phan; Tho
Attorney, Agent or Firm: Lyon & Lyon LLP
An antenna apparatus for use as in an automobile collision warning system has a primary radiator for radiating a high-frequency radio wave beam, a reflecting member for reflecting the radio wave beam, an actuating mechanism for actuating the reflecting member, and a lens such as a dielectric lens for converging the radio wave beam reflected by the reflecting member to reduce an angle of divergence of the radio wave beam. |
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DETAILED DESCRIPTION It is therefore an object of the present invention to provide an antenna apparatus having a beam scanning mechanism which is small in size and inexpensive to manufacture, operates at a high speed, and has good beam radiation characteristics.
To achieve the above object, there is provided in accordance with an aspect of the present invention an antenna apparatus comprising a primary radiator for radiating a high-frequency radio wave beam, a reflecting member for reflecting the radio wave beam, an actuating mechanism for actuating the reflecting member, and a lens for converging the radio wave beam reflected by the reflecting member to reduce an angle of divergence of the radio wave beam.
According to another aspect of the present invention, there is provided an antenna apparatus comprising a primary radiator for radiating a high-frequency radio wave beam, an auxiliary lens for converging the radio wave beam radiated by the primary radiator to reduce a diameter of the radio wave beam, a reflecting member for reflecting the radio wave beam converged by the auxiliary lens, an actuating mechanism for actuating the reflecting member, and a lens for converging the radio wave beam reflected by the reflecting member to reduce an angle of divergence of the radio wave beam.
According to still another aspect of the present invention, there is provided an antenna apparatus comprising a primary radiator for radiating a high-frequency radio wave beam, and a lens for converging the radio wave beam radiated by the primary radiator to reduce a diameter of the radio wave beam progressively along a direction in which the radio wave beam is propagated for thereby focusing the radio wave beam on a target to be detected.
According to yet still another aspect of the present invention, there is provided an antenna apparatus comprising a primary radiator for radiating a high-frequency radio wave beam, a reflecting member for reflecting the radio wave beam, an actuating mechanism for actuating the reflecting member, and a main lens for converging the radio wave beam reflected by the reflecting member to reduce a diameter of the radio wave beam progressively along a direction in which the radio wave beam is propagated for thereby focusing the radio wave beam forwardly of the main lens
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