Ku頻段類比移相器陣列與超寬頻射頻收發模組

Abstract

本論文提出一個12.45 GHz之類比移相器陣列和一個超寬頻收發系統。本文前半部設計的類比移相器陣列由反射式移相器完成。實做結果相位偏移量達 ，並且驗証8級相位陣列天線，天線主波束可在俯仰角偏移量達到約25o，整體電路以微帶線型式製作在介電係數為3.38厚度為20 mil的RO4003的基板上。 本論文後半部份描述一種超寬頻收發系統，本文中完成整個收發的模組製作，在模組的量測上全頻段發射功率大於30dBm且EVM小於-15dB，跳頻時間小於0.25ms。

In this thesis, a 12.45-GHz analog phase shifter for a phase array antenna and a ultra-wide band transceiver module are proposed. In the first part of this thesis, the design and the measurement of a reflective phase-shift array are presented. The maximal phase shift is larger than 120o. An array antenna, which includes 8 phase shifter units is implemented and measured. Each unit has a dipole antenna, an analog phase shifter, a coupler, an amplifier, an attenuator, and a phase compensation transmission line. The mainbeam of the array antenna can be switched around in vertical direction. The whole circuits are fabricated with microstrip line on a RO4003 substrate with a dielectric constant of 3.38 and a thickness of 20 mil. In the second part of this thesis, the measured results of an ultra wide band transceiver module is presented. The total bandwidth is more than 28%, the total channel power are larger than 30dBm, and EVM measurement is less than -15dB. The time interval of the frequency hopping is less than 0.25ms.