Circuits and Active Antennas for Ultra-Wide Band Pulse Generation and Transmission
Circuits and Active Antennas for Ultra-Wide Band Pulse Generation and Transmission
复制标题
用于超宽带脉冲生成和传输的电路和有源天线
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
S. Koul
中科院分区：
文献类型：
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作者：
Mithilesh Kumar;A. Basu;S. Koul
本文介绍了一种新型有源天线的设计和研制，包括用于超宽带脉冲产生和传输的电路。在本设计中，脉冲宽度约为150ps，幅度为500mV（峰对峰），使用单个高电子迁移率晶体管（HEMT）作为有源器件（以及可选的肖特基二极管以增强性能）产生脉冲，这是产生超宽带脉冲的最简单电路，据我们所知。该电路与新设计的超宽带平面微带馈电槽天线集成在一起，该天线是一种有源天线，除了辐射信号外，它还可以作为滤波器，将传输脉冲的频谱调整为接近超宽带通信推荐的形状。我们还对电路的工作原理进行了定量分析。
In this paper, the design and development of a novel active antenna including circuits for Ultra-wide band (UWB) pulse generation and transmission have been described. In this design a pulse with pulse-width approximately 150ps and amplitude 500mV (peak-to- peak) was generated using a single high electron mobility transistor (HEMT) as the active device (and an optional Schottky diode for enhanced performance), this being the simplest circuit for generating UWB pulses as far as we know. This circuit was integrated with a newly designed UWB planar microstrip-fed slot antenna, which is an active antenna in the sense that in addition to radiating the signal, it also acts as a fllter, which tailors the spectrum of the transmitted pulse to a shape close to that recommended for UWB communications. We have also given a quantitative analysis, which explains the operation of the circuit.