dual-band handset 中文意思是什麼
dual-band handset
解釋
雙頻手機-
For the sake of making user randomly communicate between gsm900 and dcs1800 networks with a single handset, this thesis devoted to design and realize a rf ( radio frequency ) subsystem for gsm900 / dcs1800 dual band handset according to gsm 05. 05 protocol provided by etsi, which the structure of single board can realize gsm900 / dcs1800 dual band of the handset
為了使用戶可用一部手機在gsm900 dcs1800兩個移動通信網上自動漫遊通話,本論文根據歐洲電信標準學會( etsi )提出的gsm05 . 05協議,設計實現gsm900 dcs1800雙頻段手機中射頻子系統。它單片的實現了手機的雙頻段gsm900 dcs1800 ,而且隨時可以根據網路的需要,實現無縫(不斷線)自動切換。
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