Ultra-wideband differential mode bandpass filters embedded in self-complementary antennas
Ultra-wideband differential mode bandpass filters embedded in self-complementary antennas
复制标题
嵌入自互补天线的超宽带差模带通滤波器
DOI：
10.1109/mwsym.2005.1516709
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
K. Watanabe
中科院分区：
文献类型：
--
作者：
A. Saitou;H. Aoki;N. Satomi;K. Honjo;K. Sato;T. Koyama;K. Watanabe
一个50 /spl的欧米茄。设计了一种集成四路耦合超宽带差模带通滤波器（BPF）、陷波滤波器和低通滤波器（LPF）的匹配自互补天线。宽边和边缘耦合的四个耦合线的BPF被发现表现出高达170%的分数带宽，并表现出阻抗变换比为1.2的带宽减少很少。因此，同时利用6级BPF将自互补天线的恒定输入阻抗（60 /spl π/ /spl epsiv//sub e//sup - 1/2 //spl Ω/）变换为50/spl Ω/。此外，设计并制作了带通滤波器的低通滤波器和带通滤波器的陷波滤波器。在超宽带（UWB）频段（3.1GHz至10.6GHz）上，测量的总滤波器系统的插入损耗小于2.6dB。该滤波器嵌入宽带自互补天线中，以抑制下一通带和5GHz无线局域网频带上的辐射。
A 50 /spl Omega/. matched self-complementary antenna integrated with a four coupled-line ultra-wideband differential mode bandpass filter (BPF), a notch filter and a lowpass filter (LPF) is demonstrated. Broadside- and edge-coupled four coupled-line BPFs were found to exhibit up to 170% fractional bandwidth and to exhibit impedance trans-formation ratio of 1.2 with little bandwidth reduction. Thus, 6-stage BPFs were utilized concurrently to transform the self-complementary antenna's constant input impedance (60 /spl pi/ /spl epsiv//sub e//sup - 1/2 //spl Omega/) to 50/spl Omega/. In addition, LPFs with the BPF and notch filters with the BPF were designed and fabricated. Measured insertion losses of the total filter systems were less than 2.6dB over the ultra-wideband (UWB) band (3.1GHz to 10.6GHz). The filters were embedded in wideband self-complementary antennas to reject the radiation over the next passband and the 5GHz wireless LAN band.