WR-2.8 Band Pseudoelliptic Waveguide Filter Based on Singlet and Extracted Pole Resonator

被引：23

作者：

Feng, Yinian ^{[1
]}

Zhang, Bo ^{[1
]}

Liu, Yang ^{[1
]}

Liu, Jiawei ^{[1
]}

Niu, Zhongqian ^{[1
]}

Yang, Ke ^{[1
]}

Fan, Yong ^{[1
]}

Chen, Xiaodong ^{[2
]}

机构：

[1] UESTC, Chengdu 611731, Sichuan, Peoples R China

[2] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England

来源：

IEEE ACCESS | 2019年 / 7卷

基金：

中国国家自然科学基金;

关键词：

Bandpass filter (BPF); terahertz (THz); singlet; extracted pole; MODULAR DESIGN;

D O I：

10.1109/ACCESS.2019.2913183

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a novel WR-2.8 band (260-400 GHz) pseudo-elliptic waveguide bandpass filter (BPF) based on a singlet and an extracted pole resonator is proposed. The singlet based on TE301 mode and extracted pole resonant cavities is developed to generate two transmission zeros (TZs) on both sides of the passband in order to achieve high selectivity. The mechanism of TZs generation of both structures is analyzed in this paper, and TZs position is predicted precisely. Furthermore, each TZ position can be controlled independently by changing the dimensions of resonant cavities. The proposed filter fabricated by conventional computer numerical control (CNC) milling technology exhibits an insertion loss (IL) around 0.7dB, a 3-dB fractional bandwidth (FBW) of 9.9% centered at 357GHz and an ultra-high selectivity with a 0.87 30-dB rectangular factor which is all in good agreement with the simulations. To the best of the author's knowledge, 0.87 is the highest 30-dB rectangular factor among such wide fractional bandwidth THz BPF in the open literature. This high-performance filter is capable of improving the sideband rejection receiver performance.

引用

页码：54705 / 54711

页数：7

共 23 条

[1] Adaptive synthesis and design of resonator filters with source/load-multiresonator coupling [J].