排序方式: 共有22条查询结果,搜索用时 0 毫秒
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报道了一种基于商用0.15um赝配高电子迁移率晶体管工艺的单片低噪声放大器,工作频率范围为23~36GHz.它采用自偏置结构.对晶体管栅宽进行了优化设计减小栅极电阻,以得到低的噪声系数.采用吸收回路和加电阻电容网络的直流偏置结构提高电路稳定性,用多谐振点方法和负反馈技术扩展带宽.测试结果表明,其噪声系数低于2.0dB,在31GHz处,噪声系数仅为1.6dB.在整个工作频带范崮内,增益大于26dB,输入回波损耗大于11dB,输出回波损耗大于13dB.36GHz处的ldB压缩点输出功率为14dBm.芯片尺寸为2.4mm×1mm. 相似文献
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This paper presents a 2.4 GHz power amplifier(PA) designed and implemented in 0.35μm SiGe BiCMOS technology.Instead of chip grounding through PCB vias,a metal plate with a mesa connecting ground is designed to decrease the parasitics in the PCB,improving the stability and the gain of the circuit.In addition,a low-pass network for output matching is designed to improve the linearity and power capability.At 2.4 GHz,a P_(1dB) of 15.7 dBm has been measured,and the small signal gain is 27.6 dB with S_(11)<-7 ... 相似文献
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基于IBM 0.18 μm SOI CMOS工艺,设计了一款用于WLAN的高效率CMOS功率放大器。为了提高电路的可靠性,该放大器的驱动级和输出级均采用自适应偏置电路,使得共栅管和共源管的漏源电压分布更为均衡。该芯片采用两级共源共栅结构,片内集成了输入匹配电路和级间匹配电路。测试结果表明,该放大器的增益为23.9 dB,1 dB压缩点为23.9 dBm,效率为39.4%。当测试信号为IEEE 802.11g 54 Mb/s,在EVM为3%处,输出功率达到16.3 dBm。 相似文献
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报道了基于InGaP/GaAs HBT工艺的3.4-3.6GHz功率放大器芯片的设计。针对片外和片内寄生因素引起的谐振点偏移、匹配变差、增益降低等问题,通过优化设计片外匹配电路以及设计输入匹配的片外调整电路,最终取得了较高的增益以及良好的匹配状态。电路测试结果为:在Vcc为4.3V以及Vbias=3.3V下,3.4GHz处的1dB压缩点输出功率达到27.1dBm以上,相应的PAE为25.8%,二次谐波和三次谐波抑制比分别达到了-64dBc和-51dBc。在3.4-3.6GHz频段内,增益大于28dB, S11<-12.4dB,S22<-7.4dB,达到了设计要求。 相似文献
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This paper presents a 3.4-3.6 GHz power amplifier(PA) designed and implemented in InGaP/GaAs HBT technology.By optimizing the off-chip output matching network and designing an extra input-matching circuit on the PCB,several problems are resolved,such as resonant frequency point migration,worse matching and lower gain caused by parasitics inside and outside of the chip.Under Vcc = 4.3 V and Vbias = 3.3 V,a P1dB of 27.1 dBm has been measured at 3.4 GHz with a PAE of 25.8%,the 2nd and 3rd harmonics are -64 dBc and -51 dBc,respectively. In addition,this PA shows a linear gain more than 28 dB with S11<-12.4dB and S22<-7.4 dB in 3.4-3.6 GHz band. 相似文献