Results 61 to 70 of about 3,368,646 (281)

Aerosol Jet Printing of Benzocyclobutene as a Thermally Stable, Low‐Loss Dielectric for Multilayer Microwave Electronics

Advanced Materials Technologies, EarlyView.
Multilayer aerosol jet printed components with a low‐loss, thermally stable dielectric are demonstrated using benzocyclobutene. Ink formulation and in‐line droplet evaporation control support high‐quality, versatile, and stable printing performance. A specialized measurement for low‐loss materials reveals promising microwave properties, which, combined
Md Ramjan Ali, Trent Moritz, Mohammad Tayeb Al Qaseer, Ethan B. Secor   +3 more
wiley   +1 more source

Iterative Reweighted ℓ₁ Synthesis of Sparse Antenna Arrays with Continuous Element Positions

Micromachines
Sparse antenna arrays are attractive for compact microwave and millimeter-wave front ends because they can achieve prescribed radiation performance with fewer radiating elements, thereby reducing the number of feeding channels, hardware cost, weight, and
Xin-Yu Duan, Wei-Zong Li, Yi-Xuan Zhang, Ye Hui   +3 more
doaj   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

High-Gain Miniaturized Ultrawideband Antipodal Vivaldi Antenna with Metamaterials

Micromachines
A compact high-gain antipodal Vivaldi antenna with ultra-wideband (UWB) performance ranging from 1 GHz to 25 GHz is proposed and demonstrated. The antenna features two sets of tapered exponential slots along the flare edges to enhance low-frequency ...
Wentao Zhang, Linqi Shi, Chenjie Zhao, Rui Yang   +3 more
doaj   +1 more source

Extrinsic Limitations of Stealthy Hyperuniform Devices

Advanced Optical Materials, EarlyView.
Stealthy hyperuniform devices exhibit a scattering‐free angular region whose extent follows a simple quenching equation. Experimental measurements confirm this prediction but reveal quenching efficiencies far below theoretical expectations. Multiple scattering and finite‐size effects are quantified, establishing realistic performance limits for ...
Yuhao Xu, Miao Chen, Louis Forestier, Franck Carcenac, Laurent Mazenq, Philippe Lalanne   +5 more
wiley   +1 more source

Wideband Linearly Polarized Over-2-Bit Transmitarray Antenna for Millimeter-Wave Applications

Micromachines
A wideband linearly polarized over-2-bit transmitarray antenna (TA) using the receiving-transmitting (R-T) scheme in the millimeter-wave band is presented in this work. The TA unit consists of two rectangular patches with a pair of bent branches, and the
Yuanjun Shen, Xuli Feng, Tianling Zhang
doaj   +1 more source

Radar/ESM anti-bias track association algorithm based on track distance vector detection

The Journal of Engineering, 2019
To address radar/ESM track association problem in the presence of sensor biases and different targets reported by different sensors, an anti-bias track association algorithm based on track distance vectors detection is proposed according to the ...
Baozhu Li, Yunlong Dong, Gaodong Huang, Xiaolong Chen, Jian Guan   +4 more
doaj   +1 more source

Sonar and radar SAR processing for parking lot detection [PDF]

, 2011
In this paper, SAR processing algorithms for automotive applications are presented and illustrated on data from non-trivial test scenes. The chosen application is parking lot detection.
Mure-Dubois, James, Bonacci, David, Vincent, François   +2 more
core  

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

Bandwidth-Enhancement Single-Patch Antenna with Dual-Beam Pattern via Seven-Mode Operation

Sensors
This paper presents a low-profile wideband in-phase-fed microstrip patch antenna (MPA) operating with TM60, TM04, TM62, TM24, TM44, TM82, and TM80 modes. First, a rectangular in-phase-fed MPA is theoretically analyzed to clarify how these seven modes can
Shixi Huang, Nengwu Liu, Qilong Yan
doaj   +1 more source