Results 231 to 240 of about 185,372 (245)

A Low-Loss Three-Pole Frequency-Agile Bandpass Filter with Constant Absolute Bandwidth

2019 IEEE MTT-S International Wireless Symposium (IWS), 2019
In this letter, a three-pole frequency-agile bandpass filter (FA-BPF) with three transmission zeros (TZs) is presented. Based on the element variable coupling matrix (EVCM), the FA-BPF consists of two varactor-loaded quarter-wavelength resonators and one half-wave length resonator with varactors loaded at the specific position from the shorted-end.
Shiwen Tang, Zhiyou Li, Xiaohong Tang, Yong Liu, Zongqi Cai, Junxin Luo   +5 more
openaire   +1 more source

A 0.94 ∼ 1.50 GHz Constant Absolute Bandwidth Tunable Bandpass Filter with Electric Coupling

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama), 2018
In this paper, a method to get the electrically tunable bandpass filter with constant absolute bandwidth base on electric coupling is presented. By changing the position of the capacitor, the resonator can conveniently obtain the different slopes coupling line, and the constant bandwidth filter can obtain.
Dengyao Tian, Quanyuan Feng, Qianying Xiang   +2 more
openaire   +1 more source

Dual-Band Reconfigurable Bandpass Filter With Independently Controlled Passbands and Constant Absolute Bandwidths

IEEE Microwave and Wireless Components Letters, 2016
This letter presents a novel reconfigurable dual- band bandpass filter (DBBPF) with independently controlled passbands and constant absolute bandwidths (ABW). The design procedures follow the traditional synthesis approach of filters. Moreover, in order to meet the requirement of constant ABW, theoretical analysis and calculation are carried out to ...
Zhi-Han Chen, Qing-Xin Chu
openaire   +1 more source

A Reconfigurable Fourth-order Filter With Constant Absolute Bandwidth And Four Transmission Zeros

2019 IEEE Asia-Pacific Microwave Conference (APMC), 2019
In this letter, a reconfigurable fourth-order bandpass filter with constant absolute bandwidth (ABW) and four transmission zeros is presented. The proposed filter is composed of a pair of varactor-loaded half-wavelength resonators and a pair of quarter-wavelength resonators with varactors loading at specific position.
Maoyu Fan, Kaijun Song, Yu Zhu, Yong Fan
openaire   +1 more source

Dual-band reconfigurable bandstop filter with independently controlled stopbands and constant absolute bandwidths

2017 IEEE MTT-S International Microwave Symposium (IMS), 2017
This paper presents a novel reconfigurable dual-band bandstop filter with independently controlled stopbands and constant absolute bandwidths (ABWs). The fundamental structure is based on λ/4 varactor-loaded resonators, and the key to constant ABW is choosing proper coupling regions between resonators.
Zhi-Han Chen, Shi-Xuan Zhang, Qing-Xin Chu   +2 more
openaire   +1 more source

A tunable bandpass filter with constant absolute bandwidth based on one ring resonator

Journal of Electromagnetic Waves and Applications, 2012
A miniaturized tunable bandpass filter (BPF) with constant absolute bandwidth (ABW) based on a single ring resonator is presented in this paper. The proposed BPF is composed of one ring resonator and a pair of resonators loaded with varactors. The working frequency of the BPF depends on the pair of resonators.
Y.-Y. Wang, F. Wei, B. Liu, H. Xu, X.-W. Shi   +4 more
openaire   +1 more source

Constant Absolute Bandwidth Tunable BPF with Reconfigurable Bandwidth Using Stubs-Loaded Grounded MMR

2021 IEEE MTT-S International Microwave and RF Conference (IMARC), 2021
Nagendra Kumar, Aditya Anand Gupta, Vamsi Krishna Velidi, Avg Subramanyam, V Senthil Kumar, N Ramalakshmi, D Venkata Ramana, Shriman Narayana, Yatendra Kumar Singh   +8 more
openaire   +1 more source

Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures

2017 IEEE MTT-S International Microwave Symposium (IMS), 2017
A new half-mode frequency-tunable SIW (substrate-integrated waveguide) bandpass filter with a constant absolute bandwidth is presented in this paper. For achieving the constant bandwidth, we have developed new external and internal coupling structures capable of exhibiting specified coupling values over the frequency tuning range of the presented ...
Seunggoo Nam, Boyoung Lee, Juseop Lee
openaire   +1 more source

Tunable Suspended Substrate Stripline Bandpass Filter with Constant Absolute Bandwidth

2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2022
Renjun Kuang, Hanyu Xie, Jianzhong Chen, Bian Wu   +3 more
openaire   +1 more source

Reconfigurable bandpass filter with constant absolute bandwidth based on neural network

International Journal of RF and Microwave Computer-Aided Engineering, 2021
Qian Yang, Hao Du, Xinyue Dai, Anxue Zhang, Kai‐Da Xu, Li Wang   +5 more
openaire   +1 more source