In the summer of 2009, i was employed by the microwave engineering corporation mec in north andover. Design and simulation of a high efficiency rotman lens. Feb 15, 2014 conclusion a design approach for trifocal rotman lens has been presented in this paper. It is shown that good agreement between measurements and simulation results is achieved. Rotman interactive trader client the rotman interactive trader client application is freely distributable software. Design and performance analysis of rotman lens citeseerx. We populate the physical, electrical, and transmission line.
Microstrip conformal rotman lens design using particle. A new rotman lens design including nonuniform distribution of output ports is presented in section 3, where the fabricated rotman lens and corresponding measurements are detailed. Renshengray sun has given me a very valuable experience. Since its invention in the early 1960s rotman and turner, 1963, the rotman lens has proven itself to be a useful beamformer for designers of electronically scanned arrays. Design and analysis of antenna feeding networks based on.
Optifdtd is a powerful, highly integrated, and user friendly cad environment that enables the design and simulation of advanced passive and nonlinear photonic components. Rotman lensbased circular array for generating fivemode oam. A new concept of microstrip rotman lens design semantic scholar. It is based on geometrical optics combined with the classical rotman lens design equations.
Design and simulation of a high efficiency rotman lens for. A rotman lens is built using microstrip techniques, feeding a patch antenna array. In the lens design, one follows the conventional equations of multiplefocalpoint design or optimized nonfocal lens design method 4 to locate the beam and inner receiving port phase centers. The design script generates a planar polygon with n vertices defined by coordinate vectors x and y. Polygon represents the contour of the planar rotman lens rl based on the userdefined input parameters. The calculations in the tool are based on geometrical optics combined with the lens design equations developed by rotman 1 and others 2. Rotman lens is a low cost beam forming system that provides wide scan angle and it is simple to implement in microstrip model 1. Rotman lens designer rld software package is a tool for the design, synthesis, and analysis of rotman lenses and their variants. A multibeam cylindrically conformal slot array antenna. The central beam port provides equal path lengths to each array element. Rotman lens designer, or rld, is a specialpurpose software tool for the design, synthesis, and analysis of rotman lenses and their variants.
Xf includes our powerful rotman lens designer tool rld. Section 3 proposes a new design of folded lens while a wrapped lens concept is introduced in section 4. Performances are compared with the conventional lens for each design. A fast raytracing method for microstrip rotman lens analysis. A lens with four beam ports and four array ports in the range of 4 to 6 ghz is developed and manufactured with simulated and measured results of reflection coefficient, isolation and radiation pattern, showing a good performance of. Nov 17, 2008 rotman lens design and simulation in software application notes abstract.
The design of the rotman lens is performed using remcoms rotman lens designer rld software, which produces a cad version of the device for use in xfdtd. Rotman lens is a multiinput device which controls the beam scan angle depending on the phase shift corresponding to the path length between the input source positions and the radiator elements. Design method of the rotman lensfed array for multimode oam beams. Rotman lens designer datasheet remcom usa software. Jun 10, 2016 the rotman lens is a succinct and efficient method for the broadband microwave beamforming 24,25,26,27,28. Each rit case focuses on the risks and opportunities associated with particular securities or strategies. This study presents an implementation of directionofarrival estimation using signals received from a rotman lens array antenna. This example demonstrates a device for 28 ghz beamforming for 5g networks and includes an 8x8 patch antenna array, 1 to 8 power dividers and a rotman lens initial stage.
A rotman lens consists of a parallel plate region body with beam ports and array ports distributed along opposite contours. In this example, xfdtd and rld are used to design and. Walter rotman august 24, 1922 may 19, 2007 was an american scientist known for his work in radar and antenna design. Rotman lenses with circular and elliptical slots of different orientations are simulated. Because the structure is more like a parallelplate waveguide than a transmission line, linear simulators such as microwave office or ads dont have models for the rotman lens, and you will have to analyze it numerically like rotman did, or use a 3d em solver. Rotman lens design and simulation in software xf includes our powerful rotman lens designer tool rld, which is intended for rapid development and analysis of rotman lenses given several physical and electrical input parameters. A microstrip rotman lens for ku band was simulated to validate the accuracy of the fdtd method for these devices as a first step in the development of a fullfeatured design tool. A multibeam cylindrically conformal slot array antenna based. It is intended for rapid development and analysis of rotman lenses given several physical and electrical. The lens design tool kit the software used for the initial, theoretical design of the rotman lens, called rotman lens designer rld by remcom inc.
By knowing the maximum errors on the fabrication tolerances, the arithmetic of intervals and interval analysis ia are used for determining the lower and upper bounds of the antenna feeding network parameters of interest. Rotman lens designer rld is a software tool for the design, synthesis and analysis of rotman lenses and their variants. The remainder of the paper is organized as follows. Simulation results show that the designed lens shows good performance in the operating frequency band of 45ghz.
In this study, beside the rotman lens design and implementation, the conventional. In xfdtd, a set of eight 1 to 8 wilkinson stripline power divider networks is designed to act as the connection between the rotman lens and the antenna array. This product is called rotman lens designer, or rld short. Improving side lobe level of xband microstrip rotman lens. Rotman lenses with circular and elliptical slots of different orientations are simulated, and their associated radiation patterns are plotted too. Theory and design of microstrip rotman lens geometry and design parameters of a microstriprotman lens is shown in fig. In this study, beside the rotman lens design and implementation, the conventional matching. It is intended for rapid development and analysis of rotman lenses. Rotman lens design and simulation in software remcom. Broad band rotman lens simulations in fdtd request pdf. The rld software can rapidly produce a tuned lens design from a set of design parameters. After archer 12, and recent researchers proposed idea of designing printed rotman lens, more and more applications based on the microstrip and stripline designs are booming up 1418. Section 2 discusses the design procedure and simulation results of a conformal lens.
This paper presents a trifocal rotman lens antenna design approach. Conclusion a design approach for trifocal rotman lens has been presented in this paper. The rotman lens array provides multiple beams toward different directions simultaneously. I have seen there is a software rotman lens designer 1. Design and simulation of 28 ghz beamforming system and antenna array for 5g network base stations. Rotman lens design and simulation in software ieee xplore. It is intended for rapid development and analysis of rotman lenses given several physical and electrical input parameters.
Design and simulation of a high efficiency rotman lens for mm. Rotman lens designer rld is a software tool for the design, synthesis, and. A general layout of the rotman lens is shown in fig. Passive component design, analysis and simulation 2017. Nov 15, 2019 the design script generates a planar polygon with n vertices defined by coordinate vectors x and y. Jan 21, 2014 in this video, a remcom engineer walks through the steps to set up and tune a ku band microstrip lens in rotman lens designer rld. Learn about remcoms unique tool for the design and synthesis of rotman lenses. Rotman lens design and simulation in software request pdf.
Xfdtd includes our powerful rotman lens designer tool rld, which is used for the design, synthesis, and analysis of rotman lenses and their variants. Overview of remcoms rotman lens designer rotman lens design and simulation in software. This article uses remcoms rld software to design and analyze a microstrip rotman lens for the ku band. Rotman lens design and simulation in isms band semantic scholar. A new concept of microstrip rotman lens design semantic. Rotman lens design help 0 rotman lens beam port question 3. The design of the lens or matrix s a is governed by the rotmanturner design equations that are based on the geometry of the lens and are given as follows, using the variables defined in fig. A new method for the design of antenna array feeding networks has been proposed in this work.
Rotman lens design and simulation in software application notes abstract. To see rit in action, users can follow the appropriate links to download and install the software on their pc and connect to a demonstration server hosted by the rotman school of management. Hi, everybody, i am now designing 77ghz radar, in which, i need to design a rotman lens. It is an interactive program that allows the user to enter figure 1. Remcom and all other trademarks and logos for the companys products and services are the exclusive property of remcom inc. The overall configuration of the lensfed oam array is shown in fig. Rotman lens performance analysis by ides editor issuu. The beam port outputs, which are converted to the video band using envelope detectors, form an. Rotman lens design and simulation in software, ieee microwave magazine, vol. Figure 2 kuband microstrip rotman lens figure 3 antenna pattern for different beam positions of microstrip rotman lens 3. Rotman lens design and simulation in software application. Rotman lens designer software from remcom rf globalnet.
Design of a wideband beam scanning rotman lens array tekbas, damla duygu m. The rotman lens designer rld software is a firstlevel tool for designing microstrip and stripline rotman lenses. The algorithm is based on the magnitude comparison method. Different design approaches are explained in detail. A lens with four beam ports and four array ports in the range of 4 to 6 ghz is developed and manufactured with simulated and measured results of reflection coefficient, isolation and radiation pattern, showing a good performance of this methodology. Rotman lens design was applied in raytheon in 1967 11 and further tested in the leadingedge of an f4 aircraft in 1972 9.
The ini tial lens design will come from a tool based on. Request pdf rotman lens design and simulation in software since its invention in the early 1960s rotman and turner, 1963, the rotman lens has proven. The circular antenna array is on the top surface of the upper layer, the rotman lens is positioned on the bottom surface of the lower layer, and a common ground is placed in. This paper presents a methodology for design a more reliable printed microstrip rotman lens with the support of electromagnetic simulation software.
Rotman lensbased circular array for generating fivemode. An offset beam produces a path length difference and hence a phase gradient along an array, giving a steered beam. Design of high performance wide band rotman lens in xband. This is followed by choosing proper taper to represent the printed port. Since its invention in the early 1960s rotman and turner, 1963. A three beam prototype feeding an 8element antenna array working at c band has been simulated using rld v1. It is based on a combination of theoretical design equations and simple geometrical. Free version of the winlens3d optical design package, which provides serious design and analysis tools for optical engineer, student or designer. It satisfies the qualities required in an antenna as it provides high gain, large scan angles, conformal geometry, and low cost. Rotman lens prototype with 3 beam ports and 7 array ports has been simulated using rld1. An improved design process is introduced for realizing a conformal rotman lens for cylindrically conformal arrays.
Rotman interactive trader rit application is an orderdriven market simulator which allows users to transact financial securities with each other on a realtime basis plus a sequence of rit cases. The 1x16 element patch array has a gain of 12 dbi at boresight. Rotman lens designer rld is a software tool for the design, synthesis, and analysis of rotman lenses and their variants. Rl port phase centers are obtained by the evaluation of the formulas published by peter s. Tuncay birand december 2012, 106 pages the design, manufacturing techniques and measurements for wideband rotman lens are presented. Tuning a microstrip lens in rotman lens designer rld and. Pdf design and performance of a k u band rotman lens.
It has an elaborately designed lens body, formed by the beam arc and the inner contour, and suitable transmission delay lines w n from the inner contour to the outer contour to produce a phase difference for the successive outputs. Rotman lens design and simulation in software application notes. Microstrip conformal rotman lens design using particle swarm optimization pso. Simulation software in optics and lasers simca, commodpro, spir, thermopt. The rotman lens is a succinct and efficient method for the broadband microwave beamforming 24,25,26,27,28. Rotman lens design and simulation in software rf globalnet. This article uses the developed software to design and analyze a microstrip rotman lens for the ku band. This paper presents the design, simulation, and fabrication of two rf steerable beamforming networks bfn using a 4. Design and simulation of 28 ghz beamforming system and antenna array for. It is based on geometrical optics combined with classical rotman lens design equations.
Design and analysis of antenna feeding networks based on the. Jan 31, 2017 the rotman lens designer rld software is a firstlevel tool for designing microstrip and stripline rotman lenses. Inherent in its design is a true time delay phase shift capability that is independent of. Rotman lens designer rotman lens designer rld is a software tool for the design, synthesis, and analysis of rotman lenses and their variants. It is intended for rapid development and analysis of rotman lenses given several physical and electrical input. Among his inventions were the rotman lens, the sandwich wire antenna, and the trough waveguide. The rotman lens and slot antenna are built and optimized in fullwave simulation software. A fast raytracing method for microstrip rotman lens analysis junwei dong 1, amir i. The rotman interactive trader client application is freely distributable software. Since its invention in the early 1960s, the rotman lens has proven itself to be a useful beamformer for designers of electronically scanned arrays. Advanced synthesis and em simulation for iot antenna design. In this video, a remcom engineer walks through the steps to set up and tune a ku band microstrip lens in rotman lens designer rld. Rotman lens design software rld synthesis, analysis.
By knowing the maximum errors on the fabrication tolerances, the arithmetic of intervals and interval analysis ia are used for determining the lower and upper bounds of the antenna feeding network. In particular, the considered feeding networks are based on the rotman lens. Implementation of directionofarrival estimation using. With essential parameters, the outline of the lens is calculated by matlab, in this way we can design a rotman lens with certain functions, also the model is constructed by simulation software with the data imported from matlab. There are unique requirements for the phase distribution and phase compensation in cylindrically conformal applications. There is a lot of scope in optimizing various parameters which are useful in designing rotman lens.
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