Analysis and Design of a Compact Leaky-Wave Antenna for Wide-Band Broadside Radiation

Comite, Davide; Podilchak, Symon K.; Baccarelli, Paolo; Burghignoli, Paolo; Galli, Alessandro; Freundorfer, A.P.; Antar, Yahia M. M.

doi:10.1038/s41598-018-35480-7

Cited by 48 publications

(21 citation statements)

References 46 publications

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“…When considering classic LWA design, to achieve broadside radiation, periodic structures might be required [17], [18]. However, challenges arise to suppress the open-stopband effect which could reduce antenna efficiency [19], [20].…”

Section: General Design Considerationsmentioning

confidence: 99%

“…However, challenges arise to suppress the open-stopband effect which could reduce antenna efficiency [19], [20]. To avoid this, it is possible to design compact LWAs based on the beam splitting condition, which can produce a single beam at broadside due to the combination of a bi-directional leakywave (LW) field distribution for radiation on the truncated traveling-wave aperture [18], [21], [22].…”

Section: General Design Considerationsmentioning

confidence: 99%

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Compact Leaky-Wave SIW Antenna With Broadside Radiation and Dual-Band Operation for CubeSats

Kuznetcov

Podilchak

Poveda-García

et al. 2021

Antennas Wirel. Propag. Lett.

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This letter presents a substrate-integrated waveguide (SIW) antenna for CubeSat applications. The compact structure utilizes middle-point feeding and shorting walls to achieve broadside radiation in the far-field at two distinct frequencies. In particular, this dual-frequency behavior is related to the transition from a dominant leaky-wave (LW) on the aperture at lower frequencies to more hybrid radiation (at higher frequencies) due to LW fields and structure resonance due to truncation. This response is generated by the shorting vias at the lateral ends of the SIW antenna. Given these conditions, the developed leaky-wave antenna (LWA) prototype is well matched (|S11| ≤ -10 dB) from 23.2 to 23.5 GHz and 24.8 to 25.2 GHz with realized gains of 8 dBi and 6 dBi, respectively. Maximum efficiency (including the connector) is around 87%. Such dual-frequency operation could enable up-link and downlink operation in the K-band. Overall dimensions of the antenna are 2λ0 x 2.6λ0 (at the lower frequency). Possible placement on CubeSats can be underneath solar panels, thus increasing the available surface area for solar power harvesting. Also, to the best knowledge of the authors, no similar dual-frequency SIW-LWA has been previously reported.

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Section: General Design Considerationsmentioning

confidence: 99%

Section: General Design Considerationsmentioning

confidence: 99%

Compact Leaky-Wave SIW Antenna With Broadside Radiation and Dual-Band Operation for CubeSats

Kuznetcov

Podilchak

Poveda-García

et al. 2021

Antennas Wirel. Propag. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The feeding mechanism of similar lens types can be waveguide fed based horn antennas (Muhammad Ali Babar , or groove gap waveguides (Rajo-Iglesias, Ferrando-Rocher and Zaman, 2018) (Tamayo-Dominguez, Fernandez-Gonzalez and Castaner, 2018). A unique leaky-wave antenna operating from 21.9 to 23.9 GHz shows metallic strip grating structure can also be used for lens feed (Comite et al, 2018). A slightly different single-polarization Fresnal zone plate lens antenna operating from 57 to 64 GHz is presented in (Kodnoeih et al, 2018).…”

Section: Fixed Beamformersmentioning

confidence: 99%

Development Challenges of Millimeter‐Wave 5G Beamformers

Abbasi

2020

Wiley 5G Ref

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Beamforming is the central concept that can make millimetre-wave (mmWave) a viable solution by solving challenges of link-budget, cost, power, form factor, complexity, regulatory constraint and so on. Before deployment of mmWave beamforming solution for 5G, and possibly beyond, several fundamental questions need to be answered. Some of them include hardware constraints, performance matrices, realistic propagation channel models including impairments due to obstacles such as body, blockages due to casings, phase noise, a model for Spatial-temporal variations in channels, and advanced MIMO techniques for multi-carrier and multi-user communications. The site constraints and massive non-line-of-sight transmission within the urban environment are severely questioning the conventional terrestrial low power node deployments that used to work well at low operational frequencies (sub-6 GHz). In addition to this, in beamforming technology using massive antenna arrays, the coordination of the users and beams at the transmitter and receiver end within a large network are very challenging. In this study, we comprehensively investigate some of the most prominent and best practice solutions that attempted to answer these challenging questions.

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“…A specialized form of similar feed uses leaky-wave antenna operating at 21.9-23.9 GHz band. The feed structure comprises a metallic strip that has a grating structure and the end of this strip can be placed at the focal point of a lens-based beamformer [87].…”

Section: Mmwave Radio Signals Have Propagation Characteristics Such Amentioning

confidence: 99%

Beamformer development challenges for 5G and beyond

Abbasi

Fusco

2020

Antennas and Propagation for 5G and Beyond

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Antenna's beamforming technology [1] is vital in the utilization of the microwave and millimeter-wave (mmWave) frequency bands for the fifth-generation (5G) communication technology, and beyond, applications that include the sixth generation (6G), Internet of Things and Industry 4.0 [2,3]. Antenna beamforming can be defined as the ability of an antenna array to steer the maximum radiation toward a prescribed direction, or, conversely, the ability of the antenna array to estimate the direction of arrival (DOA) of an impinging signal. Beamforming is generally achieved by using multiple antennas, spatially colocated to either function as an independent radiator or as a unit cell in larger array arrangements. Recently, the term multiple-input-multiple-output (MIMO) has been used in conjugation with the beamforming technology since it also involves multiple antenna systems, thus linking it to the beamforming technology [4]. When the number of antennas used in the MIMO operation becomes very large, it is generally termed massive MIMO technology [5]. Different beamforming concepts are used for the two frequency spectrum classifications in cellular technology, i.e., sub-6 GHz and mmWave. The majority of beamformer challenges at sub-6 GHz are already resolved, and prototypes are now available [6]; however, there are still major fundamental challenges that engineers face while developing beamformers for use in the mmWave bands, i.e., >28 GHz. Challenges include, but are not limited to, high path loss, power generation, adaption to account for realistic channel estimation, hardware impairments, energy leakage in circuits, high development cost, spatial-temporal channel variations, signal blockages due to the presence of obstacles such as beamformer casing, user body and hand. Also, multiuser MIMO techniques are not easily implementable in mmWave frequencies. In addition to this, beam coordination at transmitter and receiver antenna systems especially in mmWave spectrum is very challenging. In this chapter, we will first classify the beamformers based on the system architecture, operational frequency

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Analysis and Design of a Compact Leaky-Wave Antenna for Wide-Band Broadside Radiation

Cited by 48 publications

References 46 publications

Compact Leaky-Wave SIW Antenna With Broadside Radiation and Dual-Band Operation for CubeSats

Compact Leaky-Wave SIW Antenna With Broadside Radiation and Dual-Band Operation for CubeSats

Development Challenges of Millimeter‐Wave 5G Beamformers

Beamformer development challenges for 5G and beyond

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