Results 241 to 250 of about 333,895 (294)

Integrated Electro-Optic Frequency Combs: Physical Mechanisms, Device Architectures, Material Platforms and System Applications. [PDF]

Nanomaterials (Basel)
Zeng H, Hu Q, Zhang Y, Liu X, Zhuang Y, Wang Z, Wei X, Xu Z.   +7 more
europepmc   +1 more source

Wideband circularly polarized leaky wave rectenna. [PDF]

Sci Rep
Mohamed N, Eltresy NA, Elnaghi BE, Magdy A, Abdallah EA.   +4 more
europepmc   +1 more source

A compact circularly polarized ultra-wide bandwidth implantable antenna for multiple scenarios. [PDF]

Sci Rep
Song Z, Yang D, Wang Y, Shi Y, Zheng X, Wang L.   +5 more
europepmc   +1 more source

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Analysis Of Delay Characteristics At 4.9 Ghz And 28 Ghz In An Indoor Industrial Scenario

2020 14th European Conference on Antennas and Propagation (EuCAP), 2020
The development of 5G promotes the interconnection of all things. And Industrial Internet of Things (IIoT) have attracted much attention because of its broad application value. In this paper, we present measurements that were conducted at 4.9 GHz and 28 GHz for comparing the channel delay spread in an indoor industrial scenario.
Zuolong Ying, Tao Jiang, Pan Tang, Jianhua Zhang, Lei Tian   +4 more
openaire   +1 more source

A Comparative Study for Indoor Factory Environments at 4.9 and 28 GHz

2020 14th European Conference on Antennas and Propagation (EuCAP), 2020
The industrial Internet of Things (IIoT) has benefited from the fifth-generation (5G) wireless network and is providing much-needed impetus to stimulate economic growth. Because of a very wide frequency range of 5G wireless network, the microwave and millimeter wavebands will constitute hybrid wireless communication systems, thus it is essential to ...
Yicheng Guan, Jianhua Zhang, Lei Tian, Pan Tang, Tao Jiang   +4 more
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Experimental Performance of the Tri-Polarized MIMO Channel in Urban Microcell at 4.9 GHz

2020 IEEE/CIC International Conference on Communications in China (ICCC), 2020
Tri-polarized MIMO system can provide higher capacity, which has been proved theoretically and verified in some real simple indoor channel measurements. In this paper, we did the channel measurements using dipole to form tri-polarized MIMO antennas with 100 MHz bandwidth at 4.9 GHz carrier frequency in Urban Microcell (UMi) scenario.
Zuolong Ying, Yuxiang Zhang 0002, Pan Tang, Zhen Zhang 0064, Jianhua Zhang 0001, Lei Tian 0004, Guangyi Liu 0001, Yi Zheng   +7 more
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Design of compact antenna for 2.4/4.9/5.2/5.8‐GHz WLAN

Microwave and Optical Technology Letters, 2014
ABSTRACTThe design of a compact antenna for wireless devices in the 2.4/4.9/5.2/5.8‐GHz wireless local area network (WLAN) application is presented. The antenna consists of a U‐element with microstrip‐fed on one side of the substrate and an L‐element connected to ground on the other side.
Cheung, SW, SUN, X, Yuk, TTI
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AM Herculis: An Outburst at 4.9 Ghz

1985
We report the results of radio observations of AM Her with the Very Large Array (VLA). The quiescent emission first discovered by Chanmugam and Dulk (1982) at 4.9 GHz is confirmed and upper limits to the flux density at 1.5 GHz and 15 GHz obtained. We also report the discovery of a remarkable outburst at 4.9 GHz which was essentially 100% circularly ...
T. S. Bastian, George A. Dulk, G. Chanmugam   +2 more
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Design of 4.9 GHz Current starved VCO for PLL and CDR

2018 5th International Conference on Signal Processing and Integrated Networks (SPIN), 2018
A modified current starved voltage controlled oscillator (VCO) is introduced that uses voltage to current convertor based biasing circuit. The voltage supply fluctuations are reduced at output of this VCO. The frequency range obtained at the output is varying with resistor value.
Neha Singhal, R.K Sharma
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A 4.9-GHz GaN MMIC Doherty Power Amplifier for 5G Application

2019 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), 2019
-This paper presents the simulation result of a 4.9-GHz GaN MMIC Doherty Power Amplifier for 5G Application using a 0.25-μm gallium nitride (GaN)-HEMT process. According to the simulation results, a saturated power of 40 dBm-40.3 dBm, a saturated drain efficiency (DE) of 60%-63%, and a 6-dB back-off DE of 51%-53% are achieved from 4.8 GHz to 5 GHz ...
Rui-Jia Liu, Xiao-Wei Zhu, Xin Jiang, Dong Xia   +3 more
openaire   +1 more source