| Summary: | 碩士 === 明志科技大學 === 電機工程研究所 === 100 === The three compact structure of dual-band and multi-band operation antennas are proposed in this paper. The resonant path are based on resonating at a quarter and a half wavelengths. By using branch loop and coupling resonant, it can satisfy achieve the required band.
Firstly, a dipole antenna suitable for Bluetooth, WLAN and WiMAX applications is proposed. The antenna is composed of two pairs of T-shaped and U-shaped sections, can achieve a compact size of 6(W)*35(L)mm2 FR4 substructure, With 10 dB return loss, two operating frequency bands covering 2.4-2.55 and 4.99-6 GHz can be obtained with our design.
Second, a monopole antenna suitable for GSM/DCS/PCS/UMTS applications is proposed. The antenna is composed of the loop and the coupling resonance, can achieve a compact size of 15(W)*50(L)mm2 FR4 substructure, With 6 dB return loss, two operating frequency bands covering 0.86-0.96 and 1.71–2.17 GHz can be obtained with our design.
Third, a folded loop antenna suitable for GSM/DCS/PCS/UMTS applications is proposed. The antenna by the resonance loop composed, can achieve a compact size of 20(W)*50(L)mm2 on copper substructure, With 6 dB return loss, two operating frequency bands covering 0.86-0.96 and 1.71–2.17 GHz can be obtained with our design.
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