Antenna apparatus, communication apparatus, and image capturing system
AssigneeCanon Kabushiki Kaisha
InventorsKoji Yukimasa, Takeaki Itsuji, Yuki Kitazawa, Tatsuya Murao, Yasushi Koyama, Takahiro Sato
Life of this patent
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Abstract
An antenna apparatus that comprises an active antenna including an antenna, a semiconductor structure configured to operate as an oscillator, and at least two power lines configured to give a potential difference to the semiconductor structure, and configured to generate or detect an electromagnetic wave, and a control line electrically connected to one of the at least two power lines and configured to be injected with a signal for controlling a phase of the oscillator in the active antenna is provided.
Claims23
An antenna apparatus comprising:
- an active antenna including an antenna, a semiconductor structure configured to operate as a first oscillator, and at least two power lines configured to give a potential difference to the semiconductor structure, and configured to generate or to detect an electromagnetic wave;
- a control line electrically connected to one of the at least two power lines and configured to be injected with a signal for controlling a phase of the first oscillator in the active antenna;
- and
- a second oscillator configured to serve as a master to output the signal for controlling the phase of the first oscillator in the active antenna.
An antenna apparatus comprising:
- a first active antenna including a first antenna, a first semiconductor structure configured to operate as a first oscillator, and at least two power lines configured to give a potential difference to the first semiconductor structure, and configured to serve as a slave to generate or detect an electromagnetic wave;
- a second active antenna including a second antenna, a second semiconductor structure configured to operate as a second oscillator, and at least two power lines configured to give a potential difference to the second semiconductor structure, and configured to serve as a slave to generate or detect an electromagnetic wave;
- a third oscillator configured to serve as a master to output a signal that controls phases of the first oscillator and the second oscillator;
- a first control line configured to electrically connect one of the at least two power lines of the first active antenna to the third oscillator;
- and
- a second control line configured to electrically connect one of the at least two power lines of the second active antenna to the third oscillator.
A communication apparatus comprising:
- an antenna apparatus that comprises:
- an active antenna including an antenna, a semiconductor structure configured to operate as an oscillator, and at least two power lines configured to give a potential difference to the semiconductor structure, and configured to generate or detect an electromagnetic wave;
- and
- a control line electrically connected to one of the at least two power lines and configured to be injected with a signal for controlling a phase of the oscillator in the active antenna;
- a transmission unit configured to emit an electromagnetic wave;
- and
- a reception unit configured to detect the electromagnetic wave.
An image capturing system comprising:
- an antenna apparatus that comprises:
- an active antenna including an antenna, a semiconductor structure configured to operate as an oscillator, and at least two power lines configured to give a potential difference to the semiconductor structure, and configured to generate or detect an electromagnetic wave;
- and
- a control line electrically connected to one of the at least two power lines and configured to be injected with a signal for controlling a phase of the oscillator in the active antenna;
- a transmission unit configured to emit an electromagnetic wave;
- a transmission unit configured to emit an electromagnetic wave to an object;
- and
- a detection unit configured to detect the electromagnetic wave reflected by the object.
Dependencies are inferred from the claim text.