| 摘要: |
| 通过分析使用SP9T天线开关实现WCDMA-GSM双模七频段的典型手机射频电路，提出了一种
采
用SP4T天线开关的简化设计方案。该设计在保证性能的前提下，极大地降低了成本和器件面
积。测试结果表明，该方案各项射频指标，包括发射功率、灵敏度、PVT、频率误差、相位
误差、调制频谱和开关频谱等，全部符合3GPP的通信标准，完全能够实现WCDMA和GSM两种移
动通信制式的7个频段的通信能力。该方案已成功应用于实际的手机产品当中。 |
| 关键词: WCDMA-GSM双模手机 射频前端 SP4T天线开关 简化设计 |
| DOI： |
|
| 基金项目: |
|
| Simplified Design of RF Front end for WCDMA-GSM Seven-band Mobile Phones |
| SHEN Cong,ZHAO Shu-guang,YIN Yue,YUAN Mao-kai |
| (Information Science and Technology College, Donghua University, Shanghai 201620
,China) |
| Abstract: |
| This paper introduces a simplified design of RF circuits
of WCDMA-GSM dualmode sevenband mobile phone based on the SP4T antenna swi
tch through analysing
the typical architecture by SP9T antenna switch. This design reduces the cost a
nd components area greatly and also promises the performance. Test result shows
all RF performances of this design including transmit power, sensitivity, PVT
, frequency error, phase error, modulation spectrum and switching spectrum are c
onsistent with the 3GPP communication standard,and the design can realize WCDMA
and GSM seven bands communication.This design has been successfull
y applied in mobile phone development. |
| Key words: WCDMA-GSM mobile phone RF front end SP4T antenna switch simplified design |
