Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2005-08-02
2005-08-02
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
Reexamination Certificate
active
06924769
ABSTRACT:
The unbalanced feeding antenna element201is fed power from one end and placed on the upper surface of the circuit substrate103. The passive element202has open both ends, is set to a length corresponding to a predetermined frequency, placed in substantially parallel to the unbalanced feeding element201placed on the circuit substrate103at a distance of approximately 1/10 or less of a wavelength at a frequency used for transmission/reception. This suppresses the antenna current flowing into the circuit substrate103to a minimum level and makes radiation from the passive element202dominant compared to radiation from the circuit substrate103. This makes it possible to suppress a reduction in the antenna gain caused by the human body when the user uses the communication terminal apparatus.
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International Search Report dated Feb. 12, 2003.
Egawa Kiyoshi
Ito Hideo
Cao Huedung X.
Stevens Davis Miller & Mosher LLP
Wong Don
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