Results 21 to 30 of about 7,972 (265)

Vertically‐integrated differential filtering patch antenna excited by a balun bandpass filter

IET Microwaves, Antennas & Propagation, 2019
This study develops a differential‐fed filtering patch antenna, which features superior frequency selectivity, compact size, low cross‐polarisation, and symmetrical radiation patterns. The proposed antenna consists of a rectangular patch on the top layer,
Huayan Jin, Guo Qing Luo, Wenquan Che, Kuo‐Sheng Chin, Yujian Pan, Yufeng Yu   +5 more
doaj   +1 more source

Broadband Equal-Split Directional Couplers Composed of Cascade- and Tandem-Connected Coupled-Line Sections Having Unequal Lengths

IEEE Access, 2021
A new concept of broadband equal-split coupled-line directional couplers is proposed. The proposed couplers are based on coupled-line sections, all having the same coupling coefficient, and feature frequency characteristics similar to the ones obtained ...
Kinga Gawel, Magda Kalawska, Kamil Staszek, Robert Smolarz, Slawomir Gruszczynski, Krzysztof Wincza   +5 more
doaj   +1 more source

3D Printed Alumina for Low-Loss Millimeter Wave Components

IEEE Access, 2019
This paper compares the performance of three different materials and processing techniques suitable for low-loss mm-Wave components. The comparison is made by fabricating the same 2D photonic crystal structure in the W-band. Rogers RT/duroid® 6010.
Alejandro Jimenez-Saez, Martin Schubler, Christopher Krause, Damian Pandel, Kamil Rezer, Gerd Vom Bogel, Niels Benson, Rolf Jakoby   +7 more
doaj   +1 more source

An optimization design scheme applied to multi-modules cascading of transceiver IC

Dianzi Jishu Yingyong
In this paper, a novel optimization design scheme is proposed to solve the cascading mismatch problem of sub-circuits in beamforming chips due to parasitic effects.
Yu Qiushi, Guo Runnan, Chen Hao, Zhuang Yuan, Liang Yun, Yan Yujun, Wu Xia, Ge Fengchun, Wang Weibo, Tao Hongqi   +9 more
doaj   +1 more source

Heterogeneously integrated flexible microwave amplifiers on a cellulose nanofibril substrate

Nature Communications, 2020
Though flexible microwave integrated circuits (MICs) are desirable for the construction of functional microwave amplifier circuits, realizing low cost III-V-based MMICs remains a challenge.
Huilong Zhang, Jinghao Li, Dong Liu, Seunghwan Min, Tzu-Hsuan Chang, Kanglin Xiong, Sung Hyun Park, Jisoo Kim, Yei Hwan Jung, Jeongpil Park, Juhwan Lee, Jung Han, Linda Katehi, Zhiyong Cai, Shaoqin Gong, Zhenqiang Ma   +15 more
doaj   +1 more source

Cavity electromechanics with parametric mechanical driving

Nature Communications, 2020
Microwave circuits are interesting tools for microwave optomechanics and quantum information processing. Here, the authors demonstrate a phase-sensitive microwave amplifier by using parametric frequency modulation of a MHz mechanical nanobeam integrated ...
D. Bothner, S. Yanai, A. Iniguez-Rabago, M. Yuan, Ya. M. Blanter, G. A. Steele   +5 more
doaj   +1 more source

Three‐Dimensional Anomalous Hall Sensing Enabled By Spin–Orbit Torque Driven Domain Reconfiguration In Chiral Multilayers

Advanced Functional Materials, EarlyView.
A three‐dimensional magnetic field sensor is realized in chiral W/CoFeB/MgO multilayers, where spin–orbit torques reversibly reconfigure homochiral stripe domains. The symmetry of the torque enables offset‐free in‐plane sensing, while the reproducible domain reconfiguration extends the linear out‐of‐plane range. An anomalous Hall readout delivers large‐
Sabri Koraltan, Rahul Gupta, Reshma Peremadathil Pradeep, Fabian Kammerbauer, Iryna Kononenko, Klemens Prügl, Michael Kirsch, Bernd Aichner, Santiago Helbig, Florian Bruckner, Claas Abert, Andrada Oana Mandru, Armin Satz, Gerhard Jakob, Hans Josef Hug, Mathias Kläui, Dieter Suess   +16 more
wiley   +1 more source

A single‐layered balanced filtering crossover with high selectivity based on square patch resonator

IET Microwaves, Antennas & Propagation, 2023
A new design of single‐layered balanced filtering crossover with high selectivity based on square patch resonator is proposed. Originated from the degenerate modes, that is, TM12 and TM21 on square patch resonators, the feasibility of intrinsic common ...
Yi Li, Jianpeng Wang, Lei Zhu, Wen Wu
doaj   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Extremely Long Electron Lifetime in Spontaneously Passivated Polycrystalline Perovskite Layers via Illumination‐Assisted Trap Filling

Advanced Functional Materials, EarlyView.
ABSTRACT Perovskite solar cells (PSCs) are promising next‐generation photovoltaics. The high performance of PSCs is attributed to the long carrier lifetimes of perovskite photoabsorbers. However, the carrier lifetimes of polycrystalline perovskite layers, which serve as the photoabsorbers in practical PSCs, have remained limited to several tens of ...
Naoyuki Nishimura, Ryuzi Katoh, Takurou N. Murakami   +2 more
wiley   +1 more source