For the requirements of remote information management and mobile business , the microwave radio frequency identification ( rfid ) technology is studied in this dissertation , with the automatic train identification system of the national ministry of railroad as a background . the fundamentals associated with rfid system in the field of electromagnetics and communications are summarized and the technical essence is pointed out at the viewpoint of system design 為適應(yīng)遠(yuǎn)程信息化網(wǎng)絡(luò)管理和移動商務(wù)的需求,本文以我國鐵道部鐵路車號自動識別系統(tǒng)為研究背景,系統(tǒng)總結(jié)了射頻識別( rfid )系統(tǒng)的電磁學(xué)基礎(chǔ)和通信學(xué)原理,從系統(tǒng)的觀點揭示rfid技術(shù)的實質(zhì),對微波rfid技術(shù)進(jìn)行了深入的研究。