Wide frequency band planar antenna
AssigneeDelta Networks, Inc.
InventorsSheng-Yuan Chi, Shyh-Jong Chung, Yu-Cheng Chen
Life of this patent
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Abstract
A wide frequency band planar antenna comprises an elongated portion, substantially parallel to a circumferential edge of a ground pattern and comprising one end connected to a feeding transmission line, wherein there is a gap between the elongated portion and the circumferential edge of the ground pattern; a body stub and an impedance-matching-adjusting pattern for adjusting an impedance matching between the wide frequency band planar antenna and the feeding transmission line; wherein the gap value is less than 2 mm so as to enable the wide frequency band antenna to operate at a wide range of frequencies ranging from 2.3 GHz to near 6 GHz, thereby allowing the wide frequency band antenna to be applied in both WiFi LAN and WiMAX MAN.
Claims19
A wide frequency band planar antenna formed on one-side surface of a circuit board, comprising:
- an elongated portion, substantially parallel to a circumferential edge of a ground pattern formed on another-side surface of the circuit board, and comprising one end connected to a feeding transmission line, wherein there is a gap between the elongated portion and the circumferential edge of the ground pattern;
- and
- a body stub, comprising an open end and another end connected to another end of the elongated portion to form an inverted-L-shaped pattern;
- wherein the gap value is less than 2 mm so as to enable the wide frequency band antenna to operate at a wide range of frequencies ranging from 2.3 GHz to near 6 GHz.
A wide frequency band planar antenna formed on one-side surface of a circuit board, comprising:
- an elongated portion, substantially parallel to a circumferential edge of a ground pattern formed on the another-side surface of the circuit board, and comprising one end connected to a feeding transmission line, wherein there is a gap between the elongated portion and the circumferential edge of the ground pattern;
- a body stub, comprising an open end and another end connected to another end of the elongated portion;
- and
- an impedance-matching-adjusting pattern for adjusting an impedance matching between the wide frequency band planar antenna and the feeding transmission line, comprising one end short-circuited to the ground pattern through a via and another end connected to a joint between the elongated portion and the feeding transmission line;
- wherein the gap value is less than 2 mm so as to enable the wide frequency band antenna to operate at a wide range of frequencies ranging from 2.3 GHz to near 6 GHz.
Dependencies are inferred from the claim text.