Antenna Design For Long-distance

• Main Authors: Ching An Hsieh, 謝清安
• Other Authors: W. P. Lin
• Format: Others
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/62024213009321228075

碩士 === 長庚大學 === 電機工程學系 === 99 === The thesis analysis and explore characteristics of the long-distance planar antenna with 2.4GHz ISM band, and design antenna in accordance with principles of the array. Presently, DSSS and FHSS are used in WALN and Bluetooth, individually. The occupation of bandwidth in 2.4-2.4835 GHz is around 84 MHz, so the figure is requested for the rectangular array antenna. The glass fiber PCB (dielectric constant of 4.4, and dimension of 195x175 mm2) is used on antenna. The ammonium (dielectric constant of 1, and dimension of 225x205 mm2) is used on ground plate. The bandwidth is 390 MHz as the frequency is set in 2.29-2.68 GHz. The measurement of the radiation pattern which XZ and YZ plane the frequency is set in 2.4 GHz and 2.6 GHz points out the characteristics of the directed antenna. Next, this antenna, operated frequency of 2.412-2.485 GHz, uses in installment of the WLAN. When Array micros trip antenna is integrated on WLAN wireless USB and 20 dBm of output power, data transmission rate is operated from 54 Mbps to 5 Mbps, respectively. The experimental results demonstrated that it can be up to 5Mbps data transmission rate and zero packet error rate under the wireless distance of 10 km. Moreover, the wireless distance can reach 6.3 km under 54 Mbps data transmission rate. The result conforms to the calculated formula on the study use.