Results 41 to 50 of about 356 (180)

Design of Miniaturized SIW Filter Loaded with Open-Loop Resonators and Its Application to Diplexer [PDF]

Radioengineering, 2020
This paper presents a novel design of miniaturized substrate-integrated waveguide (SIW) filter loaded with a pair of unit-cell resonators. Two identical open-loop resonators are connected face-to-face to form a unit-cell. A pair of unit-cells is engraved
R. K. Barik, Q. S. Cheng, N. C. Pradhan, S. S. Karthikeyan   +3 more
doaj  

Observation of a DC Bias Voltage Dependence of Second‐Order Harmonics in Temperature Compensated Surface Acoustic Wave Resonators

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This article reports the variation of second‐order harmonics (H2) with the DC bias voltage (DCBV) in surface acoustic wave resonators employing the SiO2/LiNbO3 structure. On the other hand, linear and third‐order nonlinear responses scarcely changed with DCBV. Possible origins of this phenomenon are also discussed.
Wanli Cai, Yuanyuan Liu, Hao Liu, Jingfu Bao, Ken‐ya Hashimoto   +4 more
wiley   +1 more source

Reflectionless Linearly/Circularly Polarised Patch Antenna Based on Loading Complementary Absorptive Branches

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This letter proposes reflectionless linearly and circularly polarised patch antennas based on loading complementary absorptive branches. By establishing the equivalent circuit model of a conventional patch antenna, the complementary absorptive branch could be designed to dissipate the out‐of‐band energy through the grounded resistor, thereby achieving ...
Qiaoyu Chen, Sikuo Tian, Xiulong Chi, Gang Zhang, Shiyan Wang   +4 more
wiley   +1 more source

Filter Design Using Ultra‐Miniaturised Substrate‐Integrated Coaxial Cavity

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
The proposed substrate‐integrated coaxial cavity (SICC) comprises two dielectric substrates with three metal layers. The top and bottom metal layers form the cavity's broadside walls, and the middle is a circular patch that shorts to the bottom wall and to an embedded split CPW ring, respectively, through a blind‐via ring and three blind vias.
Min‐Hua Ho, Chun‐Ming Hung, Chung‐I G. Hsu   +2 more
wiley   +1 more source

Cross‐Polarisation Suppression in Self‐Diplexing Antennas

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
An approach to improve cross‐polarisation (XP) radiation in probe‐fed microstrip antennas is presented in this letter. The notable XP associated with self‐diplexing antennas caused by radiator multiplexing is discussed for the first time. In order to enhance the interport isolation and polarisation purity, the proposed antenna exploits the combined ...
Yitong Yao, Gang Dong
wiley   +1 more source

A new microstrip diplexer using open-loop resonators

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, a new microstrip diplexer using open loop resonators with compact size and high isolation is designed and fabricated for the WLANs (IEEE 802.11b/g at 2.4 GHz and IEEE 802.11a at 5.2 GHz) applications.
A. Chinig, J. Zbitou, A. Errkik, L. Elabdellaoui, A. Tajmouati, A. Tribak, M. Latrach   +6 more
doaj   +1 more source

Realisation of an E‐Plane Metal‐Insert Filter at E‐Band Based on Multi‐Layer Waveguide With Pin Array Electromagnetic Band Gap

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
A multi‐layer waveguide (MLW) bandpass filter is realised by stacking thin metal layers at E‐band. ABSTRACT In this paper, a multi‐layer waveguide (MLW) bandpass filter is realised by stacking thin metal layers at E‐band. In order to eliminate the leakage between layers, an electromagnetic band gap (EBG) pin array is utilised.
Morteza Rezaee, Abbas Vosoogh, Ali Mehrdadian   +2 more
wiley   +1 more source

Design of SIW‐Based Compact and High‐Gain Filtenna Array for W‐Band

International Journal of RF and Microwave Computer-Aided Engineering, Volume 2025, Issue 1, 2025.
This paper proposes a compact and high‐gain filtenna array based on substrate‐integrated waveguide (SIW) technology for the W‐band (75–110 GHz) high‐speed wireless communication systems and imaging/detection systems. By utilizing the high integration of SIW technology, the SIW filter, butterfly slot antenna array, and patch antenna array are vertically
Dong Gang, Zhou Ziyu, Meng Lingdong, Mohammad Rezwan Habib   +3 more
wiley   +1 more source

Wideband Diplexer With Narrow Channel Spacing Using Hybrid Bandpass-Bandstop Structures

IEEE Access, 2020
In this paper, a wideband diplexer with narrow channel spacing is designed by using hybrid bandpass-bandstop structures. Two wideband bandpass structures are designed with the transmission zeros at the upper or lower passband edges to achieve high skirt ...
Yan-Mei Xue, Lian Yang, Jin-Xu Xu, Xiao-Lan Zhao, Xiu Yin Zhang   +4 more
doaj   +1 more source

A Super‐Ionic Solid‐State Block Copolymer Electrolyte

Small, Volume 20, Issue 49, December 5, 2024.
The super‐stoichiometric addition of LiTFSI to poly(ethylene oxide) block copolymers leads to super‐ionic solid polymer electrolyte membranes reaching exceptionally high ion conductivities of up to 0.04 S cm−1 at room temperature, with activation energies of only 0.19 eV.
Daniel T. Krause, Beate Förster, Martin Dulle, Susanna Krämer, Steffen Böckmann, Caroline Mönich, Michael Ryan Hansen, Monika Schönhoff, Vassilios Siozios, Mariano Grünebaum, Martin Winter, Stephan Förster, Hans‐Dieter Wiemhöfer   +12 more
wiley   +1 more source