Compact Two-Layer Rotman Lens-Fed Microstrip Antenna Array at 24 GHz

Lee, Woo‐Sung; Kim, Jaeheung; Yoon, Young Joong

doi:10.1109/tap.2010.2096380

Cited by 92 publications

(43 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Rotman lens, as a constrained lens-based device, in which an EM wave is guided along the constrained paths upon the design equations, which generates multiple beams with specific magnitude and phase characteristics, is able to provide the required functionalities for the wireless subsystems. It has a carefully designed structure and appropriate-length transmission lines to produce a wave-front across the output that is phased by the time-delay in the transmission [22]. Each input port will produce a distinct beam that is shifted in angle at the output.…”

Section: Analytical Modelling and Evaluationmentioning

confidence: 99%

Analytical and Numerical Evaluations of Flexible v-Band Rotman Lens Beamforming Network Performance for Conformal Wireless Subsystems

Rahimian¹,

Alfadhl²,

Alomainy³

2016

PIER B

View full text Add to dashboard Cite

This paper presents the analytical design and numerical performance evaluation of novel V-band millimetre-wave (mm-wave) beamforming networks (BFNs), based on the Rotman lens array feeding concept. The devices are intended for operation in the unlicensed 60-GHz frequency band. The primary objective of this work is to study the feasibility of designing flexible V-band beamformers, based on liquid-crystal polymer (LCP) substrates. The planar Rotman lens device has been initially developed, and the output performances, in terms of the scattering parameters and accuracy, have been analysed. This is further continued with the detailed designs of the Rotman lens BFNs based on the four different proposed flexural cases, namely the concave-axial bending, the convex-axial bending, the concave-circumferential bending, and the convex-circumferential bending. Each of the flexures has been analysed, and the performance in terms of the surface currents and phase distributions, as the primary functionality indicators, has been presented. The presented flexible beamformers exhibit significant characteristics to be potentially employed as low-cost and efficient units of the mm-wave transceivers with the in-built electronic beam steering capabilities for the conformal wireless subsystems.

show abstract

Section: Analytical Modelling and Evaluationmentioning

confidence: 99%

Analytical and Numerical Evaluations of Flexible v-Band Rotman Lens Beamforming Network Performance for Conformal Wireless Subsystems

Rahimian¹,

Alfadhl²,

Alomainy³

2016

PIER B

View full text Add to dashboard Cite

show abstract

“…The design parameters and equations has been modified by Kim for a generalized design [7], [8]. From the design equations, the lens was designed in the form of a multilayer as shown in Fig.…”

Section: Designs Of An Asymmetric Ground Rotman Lens For Multilaymentioning

confidence: 99%

“…Recently, a two layer structure was presented by the authors. The two layer Rotman lens has two layers for antennas and a lens with a new design of the constrained lines between the Rotman lens and the antennas [7]. However, another layer is still required for circuits to accommodate a whole system.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Ground Rotman Lens for Multilayer Packages

Kim

Lee

Yoon

2014

IEEE Microw. Wireless Compon. Lett.

Self Cite

View full text Add to dashboard Cite

An asymmetric ground Rotman lens is presented in this letter. A new design of a Rotman lens is proposed to accommodate a whole beamforming system by providing separate ground layers for antennas and circuits. The lens has three dielectric layers and four metallic layers. The prototype of the lens consists of seven array ports, five beam ports, and six dummy ports. The measured return losses show that all the beam ports are matched to better than 12 dB in the band of interest from 23 to 25 GHz. The radiation patterns were measured in a near field measurement system. It shows that the beam directions are , , 0.2 , 12.4 , and 24.5 , respectively and the beam widths are 14 , 13.8 , 13 , 13.4 , and 14.1 , respectively. These results are in good agreement with the simulation. Thus, it is verified that the asymmetric ground lens is one of the best solutions for a compact beamforming system.

show abstract

“…The design of Rotman lens is based mainly on waveguide, equivalent transmission line and microstrip line technologies, [12][13][14] in which the waveguide form of the Rotman lens applied in the radar system has reduced insertion loss. 9,15,16,18 The microstrip Rotman lens antenna [18][19][20][21][22] has attracted considerable attention due to its many advantages, such as low profile, light weight, small volume, simple structure, low cost, relatively stable performance in the wideband.…”

Section: Introductionmentioning

confidence: 99%

Design of multi-beam antenna based on Rotman lens

Zhang

Zhao

et al. 2017

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

A planar Rotman lens antenna that generates multiple beams is presented over a wide angular range. The proposed multi‐beam antenna consists of a Rotman lens and a ten‐element printed Yagi antenna array. By properly comparing optical aberrations, expressing as the normalized path length errors Δl, the suitable ratio of on‐axis to off‐axis focal length (g = G/F) is acquired so as to minimize phase errors for the array elements. Ten dummy ports are employed to reduce the performance deterioration caused by energy reflection. A prototype with seven input ports was fabricated and measured, covering a wide scanning angle of 60° (–30°, 30°). The measured beam patterns show that the seven beam gains are distributed from 11.9 to 13.6 dBi under operating of 8.15 GHz. Both the simulated and measured results are used to verify the design approach.

show abstract

Compact Two-Layer Rotman Lens-Fed Microstrip Antenna Array at 24 GHz

Cited by 92 publications

References 15 publications

Analytical and Numerical Evaluations of Flexible v-Band Rotman Lens Beamforming Network Performance for Conformal Wireless Subsystems

Analytical and Numerical Evaluations of Flexible v-Band Rotman Lens Beamforming Network Performance for Conformal Wireless Subsystems

Asymmetric Ground Rotman Lens for Multilayer Packages

Design of multi-beam antenna based on Rotman lens

Contact Info

Product

Resources

About