| 摘要 |
In an inverted F pattern antenna apparatus having a first antenna element and an electrical length of a quarter wavelength of a first resonance frequency, the inverted F pattern antenna apparatus having two resonance frequencies is configured to include a third antenna element and a second antenna element at an end portion of the first antenna element, and setting a length having an electrical length obtained by adding the electrical length of a further provided antenna element to the electrical length of the inverted F pattern antenna apparatus to the electrical length of a quarter wavelength of a second resonance frequency to achieve resonance at the second resonance frequency. In addition, a loop antenna is configured to include the first, third and second antenna elements and the grounding antenna element by capacitively coupling another end of the third antenna element to the grounding antenna element. |
