| 摘要 |
The present invention relates to an antenna that increases efficiency through the addition of a series antenna element within a portable communication device such as a radiotelephone. The series antenna element includes a conductive material disposed on a dielectric. The series antenna element makes the antenna electrically longer, which increases the efficiency of a retractable antenna in both positions or a fixed "stubby" antenna. Efficiency is improved by more radio frequency power being deposited on the series antenna element causing the series antenna element to radiate radio frequencies outside of the portable communication device, which reduces the current on the circuit board. There are fewer dropped calls, improved reception and transmission of radio frequencies, and increased signal strength.
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