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射频同轴传输线的设计仿真与加工工艺 总被引:1,自引:0,他引:1
基于SU-8和BPN紫外负性感光胶,结合微电镀工艺加工制作射频同轴传输线,以实现射频器件信号的传输与耦合。首先确定在阻抗匹配情况下同轴传输线特性阻抗为50Ω的同轴传输线的具体尺寸,然后通过HFSS仿真软件对设计的结构进行模拟仿真。通过仿真结果验证设计的可行性,采用紫外光刻技术利用SU-8光刻胶做出内导体支柱,并用BPN光刻胶做出结构,对结构进行电镀。最后将BPN光刻胶剥离,即可得到射频同轴传输线。此方法制得的同轴传输线具有介质损耗小、辐射损耗小、无色散、带宽大和抗干扰强的优点,适用于高性能射频和微波电路。另外,它的制作工艺能与其他射频和微波器件及集成电路工艺兼容,便于与射频和微波电路集成。 相似文献
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射频CO_2波导激光器的研制与一般直流、交流、中频激励方法有所不同。它在许多方面具有自己的特点和要求。为此,本文结合射频特性介绍了全晶体管小型化激励源的120MHz CO_2波导激光器的调试方法。内容主要包括:射频电源的保护器件——隔离器的使用方法与要求;击穿电离气体所需触发电压——使用可变长度传输线(移相器)的方法及稳定工作所需阻抗匹配网络的设计与调试方法。 相似文献
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阻抗变换器是传输线阻抗匹配的常用方法,但宽波段匹配需进行较复杂计算。本文所介绍的一种阻抗变换器的简单计算法中,首先简要地叙述了在直角坐标系上对传输线作宽频段阻抗匹配的计算原理。通过保角变换方法推导出在史密斯阻抗圆图上进行匹配的一般表示式,绘出一套在史密斯阻抗圆图上的阻抗匹配图,并举出一些例子以说明其使用方法。 相似文献
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射频微机械(RFMEMS)开关由于其优越的高频特性在微波和毫米波电路中表现出巨大的应用前景.但是目前对微机械开关的研究主要都集中在开关梁的结构设计和力学分析上,对开关的电磁特性的研究,尤其是开关高频阻抗匹配分析的研究与验证比较少.本文在高频传输线研究的基础上,推导出微机械开关的“开态”阻抗匹配模型,并利用HFSS软件对开关的高频特性进行模拟.其结果有助于设计高性能的RF MEMS开关. 相似文献
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《Electronics letters》2008,44(19):1131-1132
Coupled inductors can be used as tunable inductances. Employing coupled inductors in the output impedance matching network of an RF power amplifier leads to superior performance when operating in more than one frequency band. As proof of this concept, the design of a dual-band RF power amplifier for the 200 and 300 MHz bands is presented. Simulation and measurement results validate the technique. 相似文献
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CW GaAs double-Read IMPATT diodes for D-band frequencies are designed and tested. For reproducible RF impedance matching, the module encapsulation technique is applied. Ohmic losses of the active device are reduced by a titanium-Schottky contact instead of an alloyed ohmic n +-contact. At 144 GHz 100 mW RF power with a conversion efficiency of 5% is realised 相似文献
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Ki Hyuk Kim Park H.I. Park J.H. Sung Woo Hwang Kang J. 《Components and Packaging Technologies, IEEE Transactions on》2001,24(2):279-284
A full software analysis technique for the radio frequency (RF) plasma display panel (PDP) has been developed. The RF PDP test panel has been analyzed by the segmentation/three-dimensional (3-D) parameter extraction/SPICE simulation scheme, which was originally developed for the analysis of RF complimentary metal oxide semiconductor (CMOS) chips. Our technique is shown to be accurate in predicting the input impedance of the RF port and the calculated input impedance is used to perform impedance matching of the system. The technique is also extendable to a much larger size RF-PDP and has the possibility of being applied to the design and analysis of various interesting RF systems and components 相似文献
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多倍频程功率放大器具有显著的优点,同轴电缆阻抗变换器能实现射频功率放大器有效的宽带匹配。在给出同轴电缆阻抗变换器方案设计的基础上,详细介绍了其基本原理以及1∶1和1∶4同轴变换器的具体结构及等效电路。针对工程需要,以同轴电缆阻抗变换器为宽带匹配网络的核心,设计了一款超宽带匹配功率放大器,经软件仿真优化及测试验证,阻抗匹配准确,测试结果达到了技术指标要求。 相似文献
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Design method for fully integrated CMOS RF LNA 总被引:2,自引:0,他引:2
An efficient method for fully integrated RF CMOS LNA design is presented. A particular input matching topology enables inductor values to be selected in order to be integrated fully and to minimise the input losses. Moreover, an active device sizing method is used to achieve a 50 /spl Omega/ input impedance with a low noise factor. Simulations show a 3.0 dB noise figure at 2.45 GHz for a power consumption of 10 mW in a 0.28 /spl mu/m RF CMOS process. 相似文献
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The study is normalized by constraining the devices to specific application: 1-W RF output power at 10 GHz. It is shown that the power gain and thermal resistance are higher and input impedances lower for the heterojunction bipolar transistor (HBT). Because of the higher thermal resistance, the operating temperature is significantly higher for the HBT, limiting the CW power output from the device. If the device area is increased to reduce the power density, then the input impedance (common emitter) will be proportionally reduced, making input matching much more difficult 相似文献