Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshinobu Nakagawa0
Koji Sako0
Masaaki Yamabayashi0
Naoyuki Takagi0
Kazumine Koshi0
Date of Patent
February 20, 2007
0Patent Application Number
110635200
Date Filed
February 23, 2005
0Patent Primary Examiner
Patent abstract
An antenna for portable cellular telephone can adjust each of multiple antenna elements efficiently and independently to a predetermined resonance frequency. A first antenna element and second antenna element are mounted on and anchored to one common base. Terminals for feeding power to the first antenna element and the second antenna element are provided respectively. The terminals are coupled to matching circuits. This structure facilitates separate and efficient adjustment of resonance frequency of the first antenna element and the second antenna element.
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