寬頻高增益天線設計

Abstract

在本文中，將設計高增益天線陣列與饋入網路，並對此高增益天線進行增益與場型的量測。其天線架構為陣列天線形式，將有寬頻特性的漸變式槽孔天線(Tapered slot antenna)組合成為1x8垂直極化的陣列天線，達到增加天線增益的效果。 另外，本研究之寬頻的高增益天線陣列之饋入網路，是藉由適當地設計每個天線單元的饋入訊號強度，與提供寬頻的等相位輸出，以有效的抑制旁波瓣準位(Side Lobe Level, SLL)，降低訊雜比(Signal to Noise Ratio, SNR)，最後將對此高增益天線進行增益與場型的量測。

In this work, we developed a wideband high gain antenna consisting of eight horizontal polarization antennas and 1 to 8 Chebyshev tapering feeding network, each of array unit is spaced by half-wavelength at 12GHz. Furthermore, it has wideband operation frequency form 4.35 to 18GHz , and it can generate a high directional radiation pattern toward for further enhancing the receiver signal-to-noise ratio (SNR) and channel capacity accordingly.