scholarly journals Study and Design of Array and Beamsteering Antennas for Millimeter Wave Band Application

2021 ◽  
Author(s):  
Saeideh Shad
Keyword(s):  
Millimeter Wave ◽  
Frequency Band ◽  
Communication Systems ◽  
High Gain ◽  
Directional Antennas ◽  
High Data Rate ◽  
Lens Antenna ◽  
High Data ◽  
Lens Antennas ◽  
Point To Point

Millimeter wave (mmWave) communication systems have attracted significant interest regarding supporting high data rate of Gigabit/s communications for the new generation of wireless communication networks. MmWave communication systems have frequency ranges in between 30 and 300 GHz wherein an enormous amount of unused bandwidth is available. Although the available bandwidth of mmWave frequencies is promising for high data rate communications, the propagation characteristics of mmWave frequencies are significantly different from microwave frequency band in terms of path loss, diffraction and blockage, and atmospheric absorption. In general, the overall losses of mmWave signals are significantly larger than that of microwave signals in point-to-point wireless communications. To compensate the high propagation losses, due to the limited output power that the current RF active components can deliver in millimeter waves, the use of directional and beam-steerable antennas become necessary in mmWave wireless systems. The use of directional antennas can effectively alleviate the signal interference in mmWave communications. High-gain directional antennas can be used at both the transmitting and receiving ends, resulting in a significantly enhanced Signal-to-Noise ratio (SNR) and improved data security, and can be used in long-range mmWave point-to-point communications. Moreover, directional antenna beams with limited spatial coverage need to be steered either electronically or mechanically to obtain a better substitute link for non-Line of Loss (LOS) communications. Therefore, this dissertation mainly focuses on antenna design for mmWave frequency band applications. High gain and beam-steerable antennas with the merits of low profile, high gain, high efficiency and low cost are studied to address the new challenges of high frequency band antennas. First, waveguide-based technology is employed to propose a new wideband high gain antenna for 60 GHz band applications. Then, for beam-steerable antenna applications to steer the antenna beam in a specific direction, different structures of cylindrical lens antennas are studied. First, a compact two-dimensional lens antenna is designed and proposed at 28 GHz, and then a possible design of a wideband beam-steerable lens antenna is discussed and presented. Finally, a fully metallic wideband metasurface-based lens antenna is explored. The antenna is realized based on an array of periodic unit-cells to reduce the loss of the dielectric part in the conventional lens antennas. This property is exploited to design wideband cost-effective fully metallic antenna at mmWave frequencies.

scholarly journals Development of Frequency Modulated Array Antennas for Millimeter-Wave Communications

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
Shaddrack Yaw Nusenu
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
High Capacity ◽  
Path Loss ◽  
Directional Antennas ◽  
Phase Shifters ◽  
Research Progress ◽  
Massive Growth ◽  
Array Antennas ◽  
Point To Point

With the massive growth of wireless data in mobile broadband communications, millimeter-wave (mm-wave) communication is an alternative enabling technique for fifth generation (5G) wireless communication systems. More importantly, mm-wave offers large frequency spectrum bands ranging from 30GHz to 300GHz that can be utilized to provide very high capacity (i.e., multigigabits per-second data rates). Moreover, because of the small wavelength at mm-wave frequencies, we can exploit large antenna elements in a small physical area, meaning beamforming schemes are feasible. Nevertheless, high directional antennas should be used due to overcoming the severe path loss and absorption in mm-wave frequencies. Further, the antennas should be steerable in angle and range directions to support point-to-point (multipoint) communications. So far, mm-wave communication has utilized phased-array antennas arrangement which is solely angle dependent. This review paper presents recent array technology, namely, frequency modulated frequency diverse array (FDA) for mm-wave communication applications with an emphasis on beamforming. In FDA, small frequency increment is added across the elements. In doing so, an array beam is generated which is angle-range-time dependent without the need of phase shifters. This feature has several promising potentials in mm-wave communications. In this review, the object is to bring to the fore this advance FDA technology to mm-wave communications community to call for more investigations. We review FDA research progress up to date and highlight the potential applications in mm-wave communications.

Generic Graphene Based Components and Circuits for Millimeter Wave High Data-rate Communication Systems

MRS Advances ◽  
2017 ◽  
Vol 2 (58-59) ◽  
pp. 3559-3564
Author(s):  
Omid Habibpour ◽  
Wlodzimierz Strupinski ◽  
Niklas Rorsman ◽  
Pawel Ciepielewski ◽  
Herbert Zirath
Keyword(s):  
Millimeter Wave ◽  
Circuit Design ◽  
Integrated Circuit ◽  
Communication Systems ◽  
Epitaxial Graphene ◽  
Data Rate ◽  
Device Fabrication ◽  
High Data Rate ◽  
Integrated Circuit Design ◽  
High Data

ABSTRACT We are developing millimeter wave (mm-wave) components and circuits based on hydrogen-intercalated graphene. The development covers epitaxial graphene growth, device fabrication, modelling, integrated circuit design and fabrication, and circuit characterizations. The focus of our work is to utilize the distinctive graphene properties and realize new components that can overcome some of the main challenges of existing mm-wave technologies in term of linearity.

scholarly journals Millimeter-Wave Communications

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 251
Author(s):  
Manuel García Sánchez
Keyword(s):  
Millimeter Wave ◽  
Frequency Band ◽  
Data Rate ◽  
High Data Rate ◽  
High Data ◽  
Very High ◽  
Millimeter Wave Communications

For the last few decades, the millimeter wave (mmWave) frequency band (30–300 GHz) has been seen as a serious candidate to host very high data rate communications [...]

H-Band Substrate-Integrated Discrete Lens Antenna For High Data Rate Communication Systems

2020 ◽  
pp. 1-1
Author(s):  
Kossaila Medrar ◽  
Loic Marnat ◽  
Laurent Dussopt ◽  
Cybelle Belem-Goncalves ◽  
Guillaume Ducournau ◽  
...  
Keyword(s):  
Communication Systems ◽  
Data Rate ◽  
High Data Rate ◽  
Lens Antenna ◽  
High Data

scholarly journals Reliable Positioning and mmWave Communication via Multi-Point Connectivity

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4001 ◽  
Author(s):  
Dileep Kumar ◽  
Jani Saloranta ◽  
Jarkko Kaleva ◽  
Giuseppe Destino ◽  
Antti Tölli
Keyword(s):  
Millimeter Wave ◽  
Frequency Band ◽  
Mobile Technology ◽  
Radio Channel ◽  
Signal Transmission ◽  
High Data Rate ◽  
Line Of Sight ◽  
Numerical Examples ◽  
High Data ◽  
Communication Reliability

One of the key elements of future 5G and beyond mobile technology is millimeter-wave (mmWave) communications, which is targeted to extreme high-data rate services. Furthermore, combining the possibility of a wideband signal transmission with the capability of pencil-beamforming, mmWave technology is key for accurate cellular-based positioning. However, it is also well-known that at the mmWave frequency band the radio channel is very sensitive to line-of-sight blockages giving rise to unstable connectivity and inefficient communication. In this paper, we tackle the blockage problem and propose a solution to increase the communication reliability by means of a coordinated multi-point reception. We also investigate the advantage of this solution in terms of positioning quality. More specifically, we describe a robust hybrid analog–digital receive beamforming strategy to combat the unavailability of dominant links. Numerical examples are provided to validate the efficiency of our proposed method.

A Synchronous Baseband Receiver for High-Data-Rate Millimeter-Wave Communication Systems

2019 ◽  
Vol 29 (6) ◽  
pp. 412-414 ◽  
Author(s):  
Sining An ◽  
Zhongxia Simon He ◽  
Jingjing Chen ◽  
Hangcheng Han ◽  
Jianping An ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
Data Rate ◽  
High Data Rate ◽  
High Data ◽  
Baseband Receiver ◽  
Millimeter Wave Communication

scholarly journals Millimeter Wave Spatial Channel Characterization for Vehicular Communications

Proceedings ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 64 ◽  
Author(s):  
Fidel Rodríguez-Corbo ◽  
Leyre Azpilicueta ◽  
Mikel Celaya-Echarri ◽  
Peio López-Iturri ◽  
Imanol Picallo ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Autonomous Vehicles ◽  
Communication Systems ◽  
Vehicular Networks ◽  
Small Scale ◽  
Vehicular Communications ◽  
Next Generation ◽  
Vehicular Communication ◽  
High Definition ◽  
High Data

With the growing demand of vehicle-mounted sensors over the last years, the amount of critical data communications has increased significantly. Developing applications such as autonomous vehicles, drones or real-time high-definition entertainment requires high data-rates in the order of multiple Gbps. In the next generation of vehicle-to-everything (V2X) networks, a wider bandwidth will be needed, as well as more precise localization capabilities and lower transmission latencies than current vehicular communication systems due to safety application requirements; 5G millimeter wave (mmWave) technology is envisioned to be the key factor in the development of this next generation of vehicular communications. However, the implementation of mmWave links arises with difficulties due to blocking effects between mmWave transceivers, as well as different channel impairments for these high frequency bands. In this work, the mmWave channel propagation characterization for V2X communications has been performed by means of a deterministic in-house 3D ray launching simulation technique. A complex heterogeneous urban scenario has been modeled to analyze the different propagation phenomena of multiple mmWave V2X links. Results for large and small-scale propagation effects are obtained for line-of-sight (LOS) and non-LOS (NLOS) trajectories, enabling inter-data vehicular comparison. These analyzed results and the proposed methodology can aid in an adequate design and implementation of next generation vehicular networks.

scholarly journals Miniature Dual-Band Substrate Integrated Waveguide Slotted Antenna Array for Millimeter-Wave 5G Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Fei-Peng Lai ◽  
Lu-Wu Chang ◽  
Yen-Sheng Chen
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Communication Systems ◽  
Single Layer ◽  
High Gain ◽  
Dual Band ◽  
Substrate Integrated Waveguide ◽  
Suitable Candidate ◽  
Fifth Generation ◽  
Half Power

A compact substrate integrated waveguide (SIW) antenna array that operates at 28 GHz and 38 GHz is proposed for fifth generation (5G) applications. The proposed array consists of four SIW cavities fabricated on one single layer of substrate. Each cavity implements a rhombic slot and a triangular-split-ring slot, resonating on TE101 and TE102 modes at 28 GHz and 38 GHz, respectively. In comparison with dual-band SIW antennas in the literature, the proposed configuration depicts a miniature footprint (28.7 × 30.8 mm2) without stacking substrates. To excite the four cavities with equal power, a broadband power divider that supports the propagation of TE10 mode is designed. Accordingly, the impedance bandwidths are 26.6–28.3 GHz and 36.8–38.9 GHz. The measured realized peak gain over the lower and higher bands is 9.3–10.9 dBi and 8.7–12.1 dBi, respectively. The measured half-power beam widths (HPBWs) at 28 GHz and 38 GHz are 20.7° and 15.0°, respectively. Considering these characteristics, including dual bands, high gain, narrow beam widths, miniaturization, and single layer, the proposed antenna array is a suitable candidate for millimeter-wave 5G communication systems with the flexibility in switching operating frequency bands against channel quality variations.

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