Radiated power based on wave parameters at millimeter-wave frequencies for integrated wireless devices

We consider device-to-device (D2D) communications in millimeter-wave (mm Wave) for the future fifth generation (5G) cellular networks. While the mm Wave systems can support multiple D2D pairs simultaneously through beamforming with highly directional antenna arrays, the mm Wave channel is significantly more susceptible to blockage compared to microwave; mm Wave channel studies indicate that if line-of-sight (LoS) paths are blocked, reliable mm Wave communications may not be achieved for high data-rate applications. Therefore, assuming that an outage occurs in the absence of the LoS path between two wireless devices by obstructions, we focus on connectivity of the mm Wave D2D networks. We consider two types of D2D communications: direct and indirect schemes. The connectivity performances of the two schemes are investigated in terms of (i) the probability to achieve a fully connected network PFC and (ii) the average number of reliably connected devices γ. Through analysis and simulation, we show that, as the network size increases, PFC and γ decrease. Also, PFC and γ decrease, when the blockage parameter increases. Moreover, simulation results indicate that the hybrid direct and indirect scheme can improve both PFC and γ up to about 35% compared to the nonhybrid scheme.

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Design of Wideband Antenna for Millimeter Waves Using HFSS

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.35133 ◽

2021 ◽

Vol 9 (VI) ◽

pp. 1403-1407

Author(s):

Pippirada Prathyusha

Keyword(s):

Millimeter Wave ◽

Communication Systems ◽

High Performance ◽

Patch Antennas ◽

Wireless Devices ◽

Wideband Antenna ◽

Microstrip Patch Antennas ◽

Low Profile ◽

Low Profile Antennas ◽

Modern Era

This paper reviews the objectives and requirements of wideband antenna for millimeter-wave applications using HFSS software (Ansys HFSS V.15.0). In modern era, all wireless devices are multipurpose and versatile, so this requires a wideband antenna to perform different tasks. Microstrip patch antennas are enhancing the performance of communication systems. Patch antennas are becoming more common these days because to their low profile and small weight, making them simple to build. The antenna and propagation issues are further complicated by need for more power, wider bandwidth, stronger gain, and insensitivity to the presence of human users. To provide dependable and interference-free communications and for high-performance millimeter-wave devices need efficient low-profile antennas.

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Statistical analysis of measurement uncertainty in total radiated power of wireless devices in reverberation chamber

IET Microwaves Antennas & Propagation ◽

10.1049/iet-map.2020.0191 ◽

2020 ◽

Vol 14 (11) ◽

pp. 1241-1245 ◽

Cited By ~ 3

Author(s):

Wei Xue ◽

Furong Li ◽

Xiaoming Chen ◽

Tommy Svensson

Keyword(s):

Statistical Analysis ◽

Measurement Uncertainty ◽

Wireless Devices ◽

Reverberation Chamber ◽

Radiated Power

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Maximizing the Lifetime of Wireless Devices in Millimeter Wave UAV Networks

Universal Journal of Electrical and Electronic Engineering ◽

10.13189/ujeee.2020.070402 ◽

2020 ◽

Vol 7 (4) ◽

pp. 234-241

Author(s):

Hazim Shakhatreh ◽

Waed Malkawi

Keyword(s):

Millimeter Wave ◽

Wireless Devices

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High gain switched beam Yagi-Uda antenna for millimeter wave communications

International Journal of Pervasive Computing and Communications ◽

10.1108/ijpcc-07-2020-0079 ◽

2020 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Pramod Kumar Aylapogu ◽

Madhu Sudan Donga ◽

Venkatachari D. ◽

RamaDevi B.

Keyword(s):

Millimeter Wave ◽

Mobile Communications ◽

Design Methodology ◽

High Gain ◽

Wireless Devices ◽

High Efficacy ◽

Content Type ◽

Feed Line ◽

5G Mobile Communications ◽

Millimeter Wave Communications

Purpose The suggested antenna has a switched mechanism among the successive elements of the radiating patch. The purpose of this paper is to develop high gain and less interference at higher frequencies. Design/methodology/approach The design geometry of the suggested high gain switched beam Yagi-Uda antennas. The constructed antenna has been developed with Rogers Substrate, relative permittivity (εr) of 4.4, tangent of loss 0.0009 and with height of 1.6 mm. The proposed antenna has an input impedance of 50, and it is connected to input feed line with 2 mm. Findings In forthcoming life, the antennas play key role in all the wireless devices, because these devices perform with high gain and high efficacy. Originality/value The pivotal principle of this paper is to accomplish the gain as high, high directivity and interference is low at higher frequencies. Therefore, it is more applicable to 5G mobile communications and millimeter wave communications.

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