Results 31 to 40 of about 7,575 (261)

A Compact Filtering Antenna With Step and Continuous Tuning Modes for WiMAX Cognitive Radio Communication

open access: yesIEEE Access, 2023
This work presents a combination of a cup-shaped monopole antenna and an E-shaped Multi-Mode Resonator (MMR) with the presence of a pair of PIN diodes and a varactor diode to form a compact reconfigurable communication filtering antenna for interweave ...
Falih M. Alnahwi   +6 more
doaj   +1 more source

Nonreciprocal Yagi–Uda Filtering Antennas

open access: yesIEEE Antennas and Wireless Propagation Letters, 2019
This paper proposes a novel and compact nonreciprocal filtering antenna based on temporal modulation. The device is composed of a third order filtering section integrated into a Yagi-Uda planar printed antenna. Strong nonreciprocity in transmission and reception is achieved at the same operation frequency by time-modulating the resonators of the ...
Jiawei Zang   +3 more
openaire   +2 more sources

Passive radar polarisation filtering technology research

open access: yesThe Journal of Engineering, 2019
This study researches the potential benefits of clutter suppression in polarisation filtering technology. In the author's laboratory, the antenna of the experimental system has been designed, called dual-polarised Yagi-Uda antenna and the antenna can ...
Yucheng Yi   +3 more
doaj   +1 more source

Filtering DRA Array and Its Applications in MIMO for Sub-6 GHz Band [PDF]

open access: yesRadioengineering, 2021
A dielectric resonator-based filtering array antenna along with multi input - multi output (MIMO) characteristics is represented in this paper. Two rectangular dielectric resonators, together with a filtering power splitter (PS) is used to get a high ...
S. Ballav, G. A. Sarkar, S. K. Parui
doaj  

Dual-Band Shared-Aperture Base-Station Antenna Array With Dual Polarization Using Filtering Magnetoelectric Dipole Antenna

open access: yesIEEE Open Journal of Antennas and Propagation
This paper presents a dual-band shared-aperture antenna array using a filtering magnetoelectric (ME) dipole antenna for the application of mobile-communication base station.
Zhi Jing Xiao   +4 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

open access: yesMolecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu   +10 more
wiley   +1 more source

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

open access: yesIET 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   +5 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

Switchable filtering in Vivaldi antenna

open access: yesElectronics Letters, 2010
Presented is a new frequency switchable Vivaldi antenna that has a capability to operate in a wideband mode (1-3 GHz) and reconfigure to six different subbands of operations. The reconfiguration is realised by coupling and changing the effective electrical length of ring slots inserted in the structure by means of pin diode switches. To examine antenna
Hamid, Mohamad Rijal   +3 more
openaire   +2 more sources

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