System-level integration and simulation of ultra wideband receiver front-end
System-level integration and simulation of ultra wideband receiver front-end
复制标题
超宽带接收前端的系统级集成与仿真
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
W. Ismail
中科院分区：
文献类型：
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作者：
N.H. Mohammad;W. Ismail
为了确定超宽带 (UWB) 接收器前端的最合适设计，对宽带天线、宽带滤波器和宽带放大器的设计进行了研究。以前对这些器件的研究已经对以下主要参数进行了分析和比较，这些参数是天线回波损耗、天线带宽、滤波器带宽、滤波器插入损耗、滤波器回波损耗、放大器增益、放大器带宽、放大器回波损耗和放大器噪声系数。这项工作是将之前单独设计的宽带天线、滤波器和放大器集成到一个完整的 UWB 接收器前端中。集成的首选设计是用于天线的对映 Vivaldi、用于滤波器的多模谐振器 (MMR) 以及用于放大器模块的三个级联 Agilent HMMC-5200 串联并联异质结双极晶体管 (HBT) 放大器。使用 Agilent ADS Momentum 执行天线的设置和仿真，而使用 Agilent ADS Schematic 执行滤波器和 UWB 放大器模块的仿真。对映 Vivaldi 天线实现了部分宽带功能，在 3.3 GHz 和 6.2 GHz 之间回波损耗低于 -10 dB。 MMR 带通滤波器仿真实现了从 3.1 GHz 到 10.6 GHz 的整个 UWB 通带几乎最大平坦的插入损耗响应，并且整个通带的回波损耗低于 -15 dB。 UWB 放大器模块的放大范围为 28.7 dB 至 30.3 dB，从 DC 到 20 GHz 的回波损耗低于 -17 dB。前端仿真在 UWB 通带内实现了 25 dB 至 29 dB 的信号放大。下阻带和上阻带的带外抑制性能分别为 8.2 dB/GHz 和 -8.1 dB/GHz 滚降率。该链路系统还在 UWB 通带内实现了 1.47 dB 至 3.13 dB 的低噪声系数。
To determine the most appropriate design for ultra wideband (UWB) receiver front-end, a study was conducted on the designs of wideband antennas, wideband filters, and wideband amplifiers. Previous works on these devices have been analysed and compared for the following major parameters, which are antenna return loss, antenna bandwidth, filter bandwidth, filter insertion loss, filter return loss, amplifier gain, amplifier bandwidth, amplifier return loss, and amplifier noise figure. This work is to integrate wideband antenna, filter, and amplifier that were previously designed separately, into a complete UWB receiver front-end. The preferred designs for the integration are antipodal Vivaldi for the antenna, multiple-mode resonator (MMR) for the filter, and three cascaded Agilent HMMC-5200 series-shunt heterojunction bipolar transistor (HBT) amplifiers for the amplifier module. Setup and simulation of the antenna is performed using Agilent ADS Momentum while the simulations of the filter and UWB amplifier module are performed using Agilent ADS Schematic. The antipodal Vivaldi antenna achieves partial wideband capability with return loss below -10 dB between 3.3 GHz and 6.2 GHz. The MMR bandpass filter simulation realizes an almost maximally flat insertion loss response for the entire UWB passband that is from 3.1 GHz to 10.6 GHz and return loss below -15 dB throughout the passband. The UWB amplifier module demonstrates amplification from 28.7 dB to 30.3 dB and return loss below -17 dB from DC to 20 GHz. The front-end simulation realizes 25 dB to 29 dB of signal amplification within the UWB passband. The out-of-band rejection performances are 8.2 dB/GHz and -8.1 dB/GHz roll-off rates for the lower and upper stopband respectively. The link system also realizes low noise figure between 1.47 dB and 3.13 dB within the UWB passband.