Results 11 to 20 of about 1,271,550 (296)

A New Method for Designing Modified Compact Microstrip LPF with Sharp Roll-Off and Wide Stopband [PDF]

open access: yesRadioengineering, 2021
A new method for designing a compact microstrip lowpass filter (LPF) with wide stopband width (SBW) and sharp roll off (ROF) is presented. In proposed designing procedure, high impedance microstrip lines are bent to achieve an LPF with compact size. Then,
A. Hoseinabadi   +3 more
doaj  

A Compact Broadband Planar Inverted-F Antenna with Dual-Resonant Modes

open access: yesApplied Sciences, 2022
In this paper, a compact broadband planar inverted-F antenna (PIFA) with dual-resonant modes (TM1/2,2 and TM3/2,0) is proposed for 5G applications. By loading a pair of horizontal slots on the patch, the TM3/2,0 mode can be shifted downward and combined ...
Zhengya Qi   +3 more
doaj   +1 more source

Modified Microstrip Feed Hybrid Rectangular Dielectric Resonator Antenna for Wireless Tri-Band Applications

open access: yesMeasurement Science Review, 2023
This article reports the Modified Microstrip Feed Hybrid Rectangular Dielectric Resonator Antenna (RDRA). The proposed structure has a ground plane with a plus-shaped slot on an FR4 substrate with a height of 1.6 mm and dimensions of 38 mm x 35 mm.
Chaitanya B, Manjunathachari K
doaj   +1 more source

Compact High Q Configurable Quint-Band Electromagnetic Bandgap Filter

open access: yesIEEE Access, 2018
A compact quint-band bandpass filter using an electromagnetic bandgap (EBG) material is proposed. To the best of authors' knowledge, this is the first quint-band filter using the EBG material.
Yu Guo   +3 more
doaj   +1 more source

A Miniaturized MIMO Antenna With Triple Band-Notched Characteristics for UWB Applications

open access: yesIEEE Access, 2021
In this paper, a novel compact four-element ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with triple band-notched characteristics is proposed. The proposed antenna is composed of four slot antenna elements with a common rhombic slot,
Zhijian Chen, Weisi Zhou, Jingsong Hong
doaj   +1 more source

Collimation of extragalactic radio jets in compact steep spectrum and larger sources [PDF]

open access: yes, 1999
We study the collimation of radio jets in the high-luminosity Fanaroff-Riley class II sources by examining the dependence of the sizes of hotspots and knots in the radio jets on the overall size of the objects for a sample of compact steep-spectrum or ...
Biretta   +4 more
core   +2 more sources

A Wideband Bear-Shaped Compact Size Implantable Antenna for In-Body Communications

open access: yesApplied Sciences, 2022
Biomedical implantable antennas play a vital role in medical telemetry applications. These types of biomedical implantable devices are very helpful in improving and monitoring patients’ living situations on a daily basis.
Sarosh Ahmad   +8 more
doaj   +1 more source

Insertion Loss and Phase Compensation Using a Circular Slot Via-Hole in a Compact 5G Millimeter Wave (mmWave) Butler Matrix at 28 GHz

open access: yesSensors, 2022
Fifth generation (5G) technology aims to provide high peak data rates, increased bandwidth, and supports a 1 millisecond roundtrip latency at millimeter wave (mmWave).
Noorlindawaty Md Jizat   +4 more
doaj   +1 more source

The diverse evolutionary paths of simulated high-z massive, compact galaxies to z=0 [PDF]

open access: yes, 2015
Massive quiescent galaxies have much smaller physical sizes at high redshift than today. The strong evolution of galaxy size may be caused by progenitor bias, major and minor mergers, adiabatic expansion, and/or renewed star formation, but it is ...
Genel, Shy   +8 more
core   +3 more sources

A Low-Profile Dielectric Resonator Antenna With Compact-Size and Wide Bandwidth by Using Metasurface

open access: yesIEEE Access, 2021
A dielectric resonator antenna (DRA) with the loading of metasurface (MS) is proposed for low-profile, wide-bandwidth and compact-size. Firstly, an MS structure consisting of 6 × 6 periodic metallic patch cells is loaded above the DRA.
Shu-Kuan Zhao   +4 more
doaj   +1 more source

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