Antenna device for a wireless device
First Claim
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1. A wireless keyboard, comprising:
- a transmitter having a first connecting end and a second connecting end;
an antenna having a first end connected to the first connecting end, and a second end connected to the second connecting end, in a manner to form a loop; and
a resonating and matching circuit coupled to the transmitter and including;
first and second capacitors connected in parallel to each other; and
a third capacitor and an inductor connected in series and to the first and second capacitors.
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Abstract
An antenna device for a wireless device has a transmitter and an antenna. The first connecting end of the transmiter is connected to the first end of the antenna, and the second connecting end of the transmitter is connected to the second end of the antenna. As a result, the antenna device can be formed as a loop and generates a magnetic field for remotely coupling the wireless device to other devices which can receive the signal emitted from the wireless device. The antenna device also includes a resonating and matching circuit coupled to the transmitter or the receiver.
34 Citations
14 Claims
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1. A wireless keyboard, comprising:
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a transmitter having a first connecting end and a second connecting end;
an antenna having a first end connected to the first connecting end, and a second end connected to the second connecting end, in a manner to form a loop; and
a resonating and matching circuit coupled to the transmitter and including;
first and second capacitors connected in parallel to each other; and
a third capacitor and an inductor connected in series and to the first and second capacitors. - View Dependent Claims (2, 3)
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4. A wireless keyboard, comprising:
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a PCB;
a transmitter coupled to the PCB and having a first connecting end and a second connecting end;
an antenna having a first end connected to the first connecting end, and a second end connected to the second connecting end, in a manner to form an antenna loop that extends away from the PCB; and
a resonating and matching circuit coupled to the transmitter and including;
first and second capacitors connected in parallel to each other; and
a third capacitor and an inductor connected in series and to the first and second capacitors. - View Dependent Claims (5, 6)
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7. A resonating and matching circuit that is coupled to a PCB of a wireless antenna for a computer peripheral device, the circuit comprising:
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first and second capacitors connected in parallel to each other; and
a third capacitor and an inductor connected in series and to the first and second capacitors. - View Dependent Claims (8, 9)
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10. A wireless computer peripheral device, comprising:
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a PCB;
a wireless signal processor coupled to the PCB and having a first connecting end and a second connecting end;
an antenna having a first end connected to the first connecting end, and a second end connected to the second connecting end, in a manner to form an antenna loop that extends away from the PCB; and
a resonating and matching circuit coupled to the processor and including;
first and second capacitors connected in parallel to each other; and
a third capacitor and an inductor connected in series and to the first and second capacitors. - View Dependent Claims (11, 12, 13, 14)
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Specification