類相對論輻射天線系統ANTENNA SYSTEM GENERATING QUASI RELATIVISTIC RADIATION

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

14/160,258

專利證號

US 9,203,136 B2

專利獲證名稱

類相對論輻射天線系統ANTENNA SYSTEM GENERATING QUASI RELATIVISTIC RADIATION

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2015/12/01

技術說明

一種產生類似於相對論帶電粒子產生之輻射的天線系統，其包含一帶有淨電荷(被稱作類帶電粒子)之電流脈衝的導線，且該類帶電粒子以近於光速傳輸並發出輻射。更佳的做法是，類帶電粒子係由使用一脈衝式雷射產生，以將電子自導電線中擊出。在以近於光速傳輸於導線上時，類帶電粒子自一彎曲導線產生一類同步輻射、自一穿過該導線之孔徑中產生一類繞射輻射、自該導線旁之折皺光柵表面產生一類史密斯-菩賽爾輻射、及自一沿軸穿過該導線之波盪器中產生一類波盪器輻射。 An antenna system that generates radiation similar to that generated by a relativistic charged particle is provided. The antenna system includes a conducting wire carrying a current pulse with a net charge, called a quasi charged particle, which propagates near the speed of light and emits radiation. Preferably, the quasi charged particle is generated by using a pulsed laser to knock out electrons from the conducting wire. While propagating on the conducting wire near the speed of light, the quasi charged particle generates a synchrotron like radiation from a bent of the wire, an undulator like radiation from a sinusoidal or helical structure of the wire, a diffraction like radiation from an aperture transmitting the wire, a Smith-Purcell like radiation from a corrugated grating surface next to the wire, and a greatly wavelength-contracted undulator like radiation from an undulator with the wire aligned along the undulator axis.

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