Wireless LAN antenna and wireless LAN card with the same

Details Wireless LAN antenna and wireless LAN card with the same Wireless LAN antenna and wireless LAN card with the same

2005-11-15

2005-11-15

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S7000MS

Reexamination Certificate

active

06965346

ABSTRACT:
A wireless LAN antenna/card which can transmit/receive RF signals in a high frequency band (e.g., 5 GHz) and a low frequency band (e.g., 2.4 GHz), includes a radiation electrode, a matching electrode and a feeding electrode. The radiation electrode has a predetermined area to define a transmission/reception frequency band of the antenna. The matching electrode has at least one open stub. The feeding electrode has a feeding point formed at an arbitrary position of the feeding electrode to receive a current, a first end connected to the radiation electrode, and a second end connected to the matching electrode. Further, the feeding point and a ground point are arbitrarily set on the feeding electrode, thus adjusting the impedance and frequency of the wireless LAN antenna.

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David M. Pozar, “Microwave Engineering”, Addison-Wesley Publishing Company, 1990, Kapitel 6.3, Chapter 6: Impedance Matching and Tuning, pp. 296 and 297.

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