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引用次数: 2
摘要
本文介绍了一种用于超宽带应用的有源集成螺旋天线的实现。通过将低噪声放大器与天线集成，可以在大带宽下保持低电压驻波比(VSWR)，与采用相同设计的无源天线相比，该天线的增益提高了13 dB，从而提高了超宽带螺旋天线的性能。设计的电路在UWB频率范围(3.1-10.6 GHz)内，LNA的增益优于13 dB，噪声系数小于3 dB, S11和S22分别小于-13 dB
Performance Amelioration of an Active Integrated Spiral Antenna System for UWB Applications
This paper describes the implementation of an active integrated spiral antenna for UWB (ultra-wideband) applications. By integrating a low-noise amplifier with antenna, the voltage standing wave ratio (VSWR) can be kept low for a large bandwidth and this antenna indicate a 13 dB improvement in gain compared with one using a passive antenna with the same design, resulting in an improved spiral antenna performance for UWB. For the designed circuit in the UWB frequency range (3.1-10.6 GHz), the gain of the LNA is better than 13 dB, its noise figure is less than 3 dB, S11 and S22 are less than -13 dB, respectively
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