Substrate Integrated Waveguide (SIW) Rotman Lens and Its Ka-Band Multibeam Array Antenna Applications

Cheng, Yu Jian; Wang, Hong; Wu, Ke; Kuai, Zhenqi; Yu, Chen; Chen, J.X.; Zhou, Jianyi; Tang, Hongjun

doi:10.1109/tap.2008.927567

Cited by 202 publications

(76 citation statements)

References 14 publications

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“…These lenses can be used for many applications such as multi-beam wireless communication systems in military [12][13][14][15]. With the development of fabrication technologies, numerous Rotman lens designs have been developed employing different techniques including microstrip [2,[5][6][7][8], graded dielectric substrates [16] or substrate integrated waveguides [17][18][19][20][21][22][23][24]. However, these designs still have a planar structure with a large electrical size which makes it difficult to integrate them into modern devices such as smart watches, mobile phones, curved TVs, or GPS devices, etc.…”

Section: Introductionmentioning

confidence: 99%

Compact Rotman Lens Structure Configurations to Support Millimeter Wave Devices

Dai¹,

Kıłıc²

2016

PIER B

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Abstract-The development of modern communication devices for the latest technologies such as 5G has brought the millimeter wave technology into the spotlight because it offers higher data rates and bandwidth. Since highly directional transmissions are necessary for communication in these frequencies due to high path loss and atmospheric absorption, the use of adaptive antennas is inevitable. Rotman lenses have long been used as analog beam forming networks to support linear array antennas for electronic scanning. Their broad bandwidth and planar structure make them ideal for a variety of applications. However, their overall dimensions can be prohibitive especially for large scan angles. In this paper, we propose a few compact configurations that reduce the overall dimensions of Rotman lens as much as 50% without degrading its performance.

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Section: Introductionmentioning

confidence: 99%

Compact Rotman Lens Structure Configurations to Support Millimeter Wave Devices

Dai¹,

Kıłıc²

2016

PIER B

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“…The theoretical formulations have been modified and improved over the years, based on the rigorous equations derived from the geometrical optics (GO) [24][25][26]. The design of the trifocal lens-based beamformer with the homogeneous medium is controlled by a series of equations that set the focal points, array positions, and lengths of transmission lines, in order to provide the antenna array with the beam patterns that can be effectively steered in certain directions, along with suppressing the undesired ones [27][28][29]. The RL design and synthesis procedure ensures the parameters to be tuned to effectively optimise the network performance, in terms of phase and amplitude errors, reflection and transmission coefficients, and sidelobe levels (SLLs) [30][31][32].…”

Section: Theoretical Design and Analysismentioning

confidence: 99%

Design and Performance Analysis of Millimetre-Wave Rotman Lens-Based Array Beamforming Networks for Large-Scale Antenna Subsystems

Rahimian¹,

Alfadhl²,

Alomainy³

2017

PIER C

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Abstract-This paper presents the comprehensive analytical design and numerical performance evaluation of novel millimetre-wave (mm-wave) switched-beam networks, based on the Rotman lens (RL) array feeding concept. These passive array devices have been designed for operation in the 28-GHz frequency band, covering the whole 18-38 GHz frequency range. The primary objective of the work is to conduct a thorough feasibility study of designing wideband mm-wave beamformers based on liquid-crystal polymer (LCP) substrates, to be potentially employed as low-cost and high-performance subsystems for the advanced transceiver units and large-scale antennas. The presented RLs exhibit significant output behaviours for electronic beam steering, in terms of the scattering (S) parameters, phase characteristics, and surface current distributions, as the feeding systems' primary functionality indicators.

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“…Most of the developed SIW-based beam-scanning arrays in literature rely on a fixed beam-forming network such as a butler matrix or a rotman lens [2], [3]. The disadvantage of such approach is that the beam can only be switched over a discrete set of scan angles and that the size of the beam-forming network grows quickly with the number of required beam directions [4], [5].…”

Section: Introductionmentioning

confidence: 99%