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US 9,318,795 B2Granted
Wideband antenna and related radio-frequency device
AssigneeWistron Neweb Corp.
InventorChi-Kang Su
Life of this patent
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Abstract
A wideband antenna is disclosed. The wideband antenna includes a ground element electrically connected to a ground, a feed element for feeding in a Radio-Frequency signal, a radiation element electrically connected to the feed element for radiating the Radio-Frequency signal, and at least one meta-material structure electrically connected between the radiation element and the ground element.
Claims16
A wideband antenna, comprising:
- a ground element electrically connected to a ground;
- a feed element for feeding in a Radio-Frequency signal;
- a radiation element electrically connected to the feed element for radiating the Radio-Frequency signal;
- at least one meta-material structure electrically connected between the radiation element and the ground element, comprising:
- a first element electrically and directly connected to the radiation element;
- and
- a second element having one end opened and another end electrically connected to the ground element;
- and
- a switch circuit comprising a switch coupled between the second element and the ground element for switching a connection between the second element and the ground element according to a switch signal,
- wherein when the switch connects the second element with the ground element, a center frequency of the antenna is a first frequency, and when the switch disconnects the second element from the ground element, the center frequency of the antenna is a second frequency, and the second frequency is greater than the first frequency.
7 more elements
A Radio-Frequency device, comprising:
- a Radio-Frequency signal processor for generating a Radio-Frequency signal;
- and
- a wideband antenna coupled to the Radio-Frequency signal processor, comprising:
- a ground element electrically connected to a ground;
- a feed element for feeding in the Radio-Frequency signal;
- a radiation element electrically connected to the feed element for radiating the Radio-Frequency signal;
- at least one meta-material structure electrically connected between the radiation element and the ground element, comprising:
- a first element electrically and directly connected to the radiation element;
- and
- a second element having one end opened and another end electrically connected to the ground element;
- and
- a switch circuit comprising a switch coupled between the second element and the ground element for switching a connection between the second element and the ground element according to a switch signal,
- wherein when the switch connects the second element with the ground element, a center frequency of the antenna is a first frequency, and when the switch disconnects the second element from the ground element, the center frequency of the antenna is a second frequency, and the second frequency is greater than the first frequency.
10 more elements
Dependencies are inferred from the claim text.