| 摘要 |
PURPOSE: An embedded type antenna structure is provided to reduce the size of a terminal and reduce electromagnetic interference by printing an antenna on a printed circuit board. CONSTITUTION: An embedded type antenna for diversity is mounted in a portable terminal. Dipole antennas(320a,320b) are printed on both sides of a printed circuit board(310) in such a manner that the dipole antennas are arranged symmetrically with each other. Matching circuits(330a,330b) are interposed between the dipole antennas and feed lines(340a,340b) so as to ensure a band width. The matching circuits are constituted by a Balun circuit.
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