摘要(英) |
A low-cost, high-efficiency dipole antenna module for cube satellite including radiator, BALUN, and impedance matching network design by using COTS (Commercial Off-The-Shelf) components is purposed.
A delay-line type BALUN is designed for 1.8 watt RF signal input, and a L-type impedance matching network is designed with low-cost COTS passive component to improve the RF power transmission efficiency between transceiver and antenna module. The input impedance of antenna module is 50 ohm (±1%) and the S11 is lower than -30dB.
This antenna module design has been successfully verified in two different experiments to provide 40 kilometers wireless transmission at UHF band for two cube satellites with the 1.8 watt transmit power and 14.15dBi gain Yagi antenna, the maximum distance of wireless transmission is estimated to 131 kilometers by using least square estimation with the same experimental condition. |
參考文獻 |
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