Results 121 to 130 of about 32,004 (155)

Tunable dual-band terahertz metamaterial bandpass filters

Optics Letters, 2013
We report metamaterial terahertz (THz) bandpass filters with tunable dual-band selectivity. The shift in the center frequency of the device is achieved by actively modifying the effective length of the resonators. This was realized by introducing vanadium dioxide (VO2) bridges interconnecting specific regions of each resonator.
Yanhan, Zhu, Subash, Vegesna, Yong, Zhao, Vladimir, Kuryatkov, Mark, Holtz, Zhaoyang, Fan, Mohammad, Saed, Ayrton A, Bernussi   +7 more
openaire   +2 more sources

Integrating a dual‐band filter into the dual‐band VCO module to achieve harmonic suppression

Microwave and Optical Technology Letters, 2008
AbstractA dual‐band voltage‐controlled oscillator (VCO) module is proposed by integrating a novel dual‐band filter with a dual‐band VCO. The resonator designed with the LC‐tuned concept in the VCO is capable of switching between two frequency bands.
Ching‐Wen Tang, Wei‐Hsien Chu
openaire   +1 more source

Dual-Band Filter Inspired by ENZ Waveguide

IEEE Microwave and Wireless Components Letters, 2017
This letter presents a novel design of the third-order dual-band filter operating in the frequency band 10–15 GHz. The filter consists of two rectangular cavities filled with foam dielectric and connected by an ultrathin waveguide channel, which mimics the epsilon-near-zero metamaterial.
Milos Radovanovic, Branka Jokanovic
openaire   +1 more source

Compact Waveguide Dual-Band Filters and Diplexers

IEEE Transactions on Microwave Theory and Techniques, 2017
This paper presents a new class of dual-band filters and diplexers, realized based on dual-band resonators. The proposed dual-band filter and diplexer do not require junctions and can achieve equivalent performance with fewer cavities, thus offering a significant reduction in size compared with traditional approaches.
Li Zhu, Raafat R. Mansour, Ming Yu
openaire   +1 more source

Tunable Dual Band Filter with BST Capacitors

Integrated Ferroelectrics, 2014
A tunable double band band-stop filter based on BST is presented. This configuration has a coplanar microstrip loaded with stepped impedance resonators. Ferroelectric BST parallel plate capacitors were loaded at the end of the stepped impedance resonators.
Hassan Aldeeb, T. S. Kalkur
openaire   +1 more source

Single- and Dual-Band Filtering Power Amplifiers

2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2020
This paper presents single-and dual-band filtering power amplifiers (FPA). In single-band FPA, a bandpass filter (BPF) using discriminating coupling is proposed to be utilized as the output matching network (OMN). By analyzing coupling matrix of BPF, impedances of the OMN at fundamental mode and harmonic are controlled independently.
YuanBo Wang, Yuan Chun Li
openaire   +1 more source

New compact dual-band bandstop filter

International Journal of Electronics, 2013
This article introduces a compact single pole dual-band bandstop filter using capacitors loaded open rectangular DGS slot. A parametric study is reported to pull down lower and upper frequency bands of the unloaded DGS slot in the range of needed stopbands with the help of the loading capacitors. A systematic design process is reported to design a dual-
Anand K. Verma, Adel Abdel-Rahman, A. Kumar, Nainu P. Chaudhari, Atallah Balalem, Abbas Omar   +5 more
openaire   +1 more source

Miniaturized dual-band dielectric waveguide filter and dual-band filtering dielectric waveguide phase shifter

AEU - International Journal of Electronics and Communications, 2023
Qingxiang Dong, Yongle Wu, Zuoyu Xu, Weimin Wang, Qinghua Yang   +4 more
openaire   +1 more source

A compact planar dual-band filtering antenna

2017 IEEE International Conference on Computational Electromagnetics (ICCEM), 2017
A compact planar dual-band filtering antenna is proposed. The design concepts in this paper achieve compacted size and reduce restrictions in the dual-band filtering antenna design. The filtering antenna utilizes an inverted U-shaped coupled line and a T-shaped feeding structure to compact the size without performance deterioration. A two-stage stepped-
Jui-Hsien Yen, Nai-Chen Liu, Keng-Hsien Chen, Jenn-Hwan Tarng   +3 more
openaire   +1 more source

Microstrip dual‐band bandpass and bandstop filters

Microwave and Optical Technology Letters, 2011
AbstractIn this letter, simple and effective design of dual‐band bandpass and bandstop filters using microstrip open‐loop resonators is proposed.The dual‐band bandpass and bandstop filters developed in this letter exhibit dual operating frequencies that are not integral multiples of each other and are realized using a simple method rather than using ...
Subash Vegesna, Mohammad Saed
openaire   +1 more source