期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
All-fiber,high power single-frequency linearly polarized ytterbium-doped fiber amplifier 被引量:3
1
作者 刘驰 漆云凤 +4 位作者 丁亚茜 周军 董景星 魏运荣 楼祺洪 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第3期54-56,共3页
We report an all-fiber high power,single frequency large-mode area (LMA) linearly polarized ytterbiumdoped fiber amplifiers (YDFA) module,which is based on the master oscillator multi-stage power amplifiers (MOPA... We report an all-fiber high power,single frequency large-mode area (LMA) linearly polarized ytterbiumdoped fiber amplifiers (YDFA) module,which is based on the master oscillator multi-stage power amplifiers (MOPA).The maximum output power is 43.8 W at a wavelength of 1064 nm when 60-W launched pump light is coupled,with high slope efficiency of 88%,polarization extinction rate (PER) 17.2 dB and nearly diffraction-limited beam quality (M 2 1.1). 展开更多
关键词 Fibers high frequency amplifiers Power amplifiers YTTERBIUM
原文传递
A VHF RFPGA with adaptive phase-correction technique
2
作者 程序 郭桂良 +2 位作者 阎跃鹏 刘荣江 姜宇 《Journal of Semiconductors》 EI CAS CSCD 2013年第8期183-187,共5页
This paper presents a VHF(30-300 MHz) RF programmable gain amplifier(PGA) with an adaptive phase correction technique.The proposed technique effectively mitigates phase errors over the VHF band,and the RFPGA as a ... This paper presents a VHF(30-300 MHz) RF programmable gain amplifier(PGA) with an adaptive phase correction technique.The proposed technique effectively mitigates phase errors over the VHF band,and the RFPGA as a whole satisfies all the specifications of the China mobile multimedia broadcasting VHF band applications.The RFPGA is implemented with a TSMC 0.25μm CMOS process.Measurement results reveal a gain range of around 61 dB,an ⅡP3 of-7 dBm at maximum gain,a power consumption of 10.2 mA at maximum gain,and a phase imbalance of less than 0.3 degrees. 展开更多
关键词 programmable gain amplifier very high frequency adaptive phase correction technique phase imbalance china mobile multimedia broadcasting
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部