The Bode-Fano Integrals as an Objective Measure of Antenna Bandwidth Reflection Coefficient Product Limit
The Bode-Fano Integrals as an Objective Measure of Antenna Bandwidth Reflection Coefficient Product Limit
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Bode-Fano 积分作为天线带宽反射系数乘积极限的客观测量
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
D. Zhou
中科院分区：
文献类型：
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作者：
A. Ghorbani;M. Ansarizadeh;N. McEwan;R. Abd;D. Zhou
Bode-Fano积分被提出作为评估天线带宽的客观工具和天线带宽改善的特殊方案。极限增益带宽积是从源到负载的最佳功率传输的度量。对于以达林顿标准形式表示的载荷，可以使用Bode-Fano理论计算最佳公差。本文首次计算了具有多达四个电抗元件的负荷的Fano极限。有人指出，即使增加同轴馈电微带贴片天线的基板高度将增加天线带宽;然而，这只适用于某些特定的高度，之后，天线的潜在带宽降低为未来增加基板高度。对于双谐振电路，当两个谐振频率相同时，可以得到最大的电势带宽
The Bode-Fano integral is proposed as an objective tool for assessing the bandwidth of antennas and special schemes for antenna bandwidth improvement. The limiting gain-bandwidth product is a measure of optimum power transfer from source to loads. For loads represented in Darlington canonical form, optimum tolerance can be calculated using the Bode-Fano theory. In this paper for the first time the Fano limit has been calculated for loads with up to four reactive elements. It was note that even though increasing the substrate height of coaxially feed microstrip patch antennas will increase the antenna bandwidth; however this is only true up to some specific heights and afterwards the antenna potential bandwidth decreases for future increase in substrate height. Also for double resonance circuits it was concluded that the maximum potential bandwidth is obtained if the two resonant frequencies are the same