A Novel Microwave High-Temperature Superconducting Reaction-Type Transmitting Filter for Mobile Base Stations

2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) Pub Date : 2007-06-25 DOI:10.1109/MSMW.2007.4294675

S. Futatsumori, T. Hikage, T. Nojima

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Abstract

A novel split open-ring reaction-type construction technique to achieve high power-handling capability for High-temperature superconducting (HTS) filters is presented. The purpose of this filter is to suppress the adjacent noise generated by transmitting power amplifiers for mobile base stations. First, it is explained that reaction-type filters are suitable for high power transmission. Secondly, novel split open-ring resonators, which reduce the maximum current density while maintaining high Q-factors are proposed. Current density dispersion effects are evaluated under the same coupling coefficient. Finally, a 5 GHz three-pole reaction-type filter using split open-ring resonators is designed. The frequency characteristics of the filter are investigated by using the method of moments. The results predict that the filter realizes both a higher power-handling capability than that of transmission-type filters and a better skirt property than existing HTS filters using dual-mode resonators.

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一种新型移动基站微波高温超导反应型发射滤波器

为实现高温超导滤波器的高功率处理能力，提出了一种新的劈开环反应型结构技术。该滤波器的目的是抑制移动基站发射功率放大器产生的相邻噪声。首先，说明了反应型滤波器适用于大功率传输。其次，提出了在保持高q因子的同时减小最大电流密度的新型开环谐振器。在相同的耦合系数下，评估了电流密度色散效应。最后，设计了一种采用开环谐振腔的5 GHz三极反应型滤波器。利用矩量法研究了滤波器的频率特性。结果表明，该滤波器比传输型滤波器具有更高的功率处理能力，并且比现有的双模谐振器HTS滤波器具有更好的裙边特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2007 International Kharkov Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW)

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