Therefore, dual mode cellphone is now referred more and more .
用同一个手机实现在不同的网络漫游切换的想法由来已久,基于此双模手机的概念也越来越多地被人提及,文章讨论了双模手机产生的背景、双模手机系统的网络结构和软件无线电在其中的应用,并根据当前双模手机的发展状况进一步阐述了双模手机的发展趋势。
Design and Realization a RF Subsystem for GSM900/DCS1800 Dual Band Handset;
GSM900/DCS1800双频手机射频子系统的设计与实现
Optimization of Dual-band matching network for GSM Mobile Phone Antenna
双频段手机天线匹配网络优化和设计
Design and Fabrication of Dual-band Antenna and RF Front-end LNA for Mobile Phone
手机双频天线及射频前端低噪声放大器的研制
Design on Dual-Port RAM Between Dual-CPU of 3G Mobile Video Telephone
3G视频手机双CPU间双端口RAM的设计与实现
Yield Analysis of Ga As DPDT Monolithic RF Switch for Wireless Communication
手机用砷化镓双刀双掷单片射频开关成品率分析
The Key Technology Research and Performance Optimization of GSM+PHS Dual-Mode Mobile Phone RF Front-End
GSM+PHS双模手机射频前端的关键技术研究与性能的优化
double superheterodyne receiver
双变频超外差接收机
dual-conversion superheterodyne receiver
双变频超外差式接收机
Frequency Control Strategy of Variable-speed Constant-frequency Doubly-fed Induction Generator Wind Turbines
变速恒频双馈风电机组频率控制策略
UHF handheld transceiver
超高频手持式收发机
VHF handheld transceiver
甚高频手持式收发机
micro-computer electrosurgical unit
微计算机高频手术刀
A GPS/Galileo Dual-module Dual-band Receiver RF Front-end Design
一种GPS/Galileo双模双频接收机射频前端芯片设计
Evaluation of Bispectral Index during Pediatric Cardiac Surgery
儿童心脏手术期间脑电双频指数评估
A Dual Frequency Power Divider Based on SIW and Composite Right/Left-handed Structure
一种SIW复合左右手结构的双频功分器
When leaving the airport they waved again and again to us.
离开飞机场时他们向我们频频挥手。
Design and improvement of answering machine on the dual-card double standby mobile platform
双卡双待手机平台答录机设计与改进
hand-operated single-and-double beam bridge crane
手动单双梁桥式起重机