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. Rotman lens design and simulation in software request pdf. 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. The rotman lens array provides multiple beams toward different directions simultaneously. Rotman interactive trader client the rotman interactive trader client application is freely distributable software. In the summer of 2009, i was employed by the microwave engineering corporation mec in north andover. Rotman lens is a low cost beam forming system that provides wide scan angle and it is simple to implement in microstrip model 1. Design and analysis of antenna feeding networks based on. Rotman lens design help 0 rotman lens beam port question 3. Rotman lensbased circular array for generating fivemode oam. The calculations in the tool are based on geometrical optics combined with the lens design equations developed by rotman 1 and others 2. Rotman lenses with circular and elliptical slots of different orientations are simulated, and their associated radiation patterns are plotted too.
Rotman lens design was applied in raytheon in 1967 11 and further tested in the leadingedge of an f4 aircraft in 1972 9. A new method for the design of antenna array feeding networks has been proposed in this work. 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. A general layout of the rotman lens is shown in fig.
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. Free version of the winlens3d optical design package, which provides serious design and analysis tools for optical engineer, student or designer. Jun 10, 2016 the rotman lens is a succinct and efficient method for the broadband microwave beamforming 24,25,26,27,28. The ini tial lens design will come from a tool based on. Rotman lens design and simulation in isms band semantic scholar. Since its invention in the early 1960s rotman and turner, 1963.
The overall configuration of the lensfed oam array is shown in fig. Broad band rotman lens simulations in fdtd request pdf. 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 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. Design and simulation of a high efficiency rotman lens.
The rotman lens is a succinct and efficient method for the broadband microwave beamforming 24,25,26,27,28. 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. In this example, xfdtd and rld are used to design and. This article uses remcoms rld software to design and analyze a microstrip rotman lens for the ku band. I have seen there is a software rotman lens designer 1. Xf includes our powerful rotman lens designer tool rld. 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. 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. Design and simulation of a high efficiency rotman lens for. A rotman lens is built using microstrip techniques, feeding a patch antenna array.
Tuncay birand december 2012, 106 pages the design, manufacturing techniques and measurements for wideband rotman lens are presented. The beam port outputs, which are converted to the video band using envelope detectors, form an. 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. The rotman lens designer rld software is a firstlevel tool for designing microstrip and stripline rotman lenses. Rotman lens design and simulation in software remcom. Rotman lens design and simulation in software application. Among his inventions were the rotman lens, the sandwich wire antenna, and the trough waveguide. Design and simulation of 28 ghz beamforming system and antenna array for. 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. The rotman interactive trader client application is freely distributable software. A new concept of microstrip rotman lens design semantic.
Optifdtd is a powerful, highly integrated, and user friendly cad environment that enables the design and simulation of advanced passive and nonlinear photonic components. Since its invention in the early 1960s, the rotman lens has proven itself to be a useful beamformer for designers of electronically scanned arrays. This study presents an implementation of directionofarrival estimation using signals received from a rotman lens array antenna. Rotman lens design and simulation in software application notes abstract.
Microstrip conformal rotman lens design using particle. A fast raytracing method for microstrip rotman lens analysis junwei dong 1, amir i. Design and performance analysis of rotman lens citeseerx. Design of a wideband beam scanning rotman lens array tekbas, damla duygu m. It is intended for rapid development and analysis of rotman lenses given several physical and electrical. Rotman lens performance analysis by ides editor issuu. Design and simulation of 28 ghz beamforming system and antenna array for 5g network base stations. Improving side lobe level of xband microstrip rotman lens. 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. We populate the physical, electrical, and transmission line.
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. Feb 15, 2014 conclusion a design approach for trifocal rotman lens has been presented in this paper. Conclusion a design approach for trifocal rotman lens has been presented in this paper. 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. Rotman lenses with circular and elliptical slots of different orientations are simulated. Rotman lens designer, or rld, is a specialpurpose software tool for the design, synthesis, and analysis of rotman lenses and their variants. Nov 17, 2008 rotman lens design and simulation in software application notes abstract. Polygon represents the contour of the planar rotman lens rl based on the userdefined input parameters. This article uses the developed software to design and analyze a microstrip rotman lens for the ku band. There are unique requirements for the phase distribution and phase compensation in cylindrically conformal applications.
A rotman lens consists of a parallel plate region body with beam ports and array ports distributed along opposite contours. A new concept of microstrip rotman lens design semantic scholar. Nov 15, 2019 the design script generates a planar polygon with n vertices defined by coordinate vectors x and y. The 1x16 element patch array has a gain of 12 dbi at boresight. Rotman lens designer datasheet remcom usa software. Rotman lens designer rotman lens designer rld is a software tool for the design, synthesis, and analysis of rotman lenses and their variants. Each rit case focuses on the risks and opportunities associated with particular securities or strategies. A multibeam cylindrically conformal slot array antenna.
In this study, beside the rotman lens design and implementation, the conventional. 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. Overview of remcoms rotman lens designer rotman lens design and simulation in software. Jan 31, 2017 the rotman lens designer rld software is a firstlevel tool for designing microstrip and stripline rotman lenses.
Pdf design and performance of a k u band rotman lens. Renshengray sun has given me a very valuable experience. In this study, beside the rotman lens design and implementation, the conventional matching. 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. The design script generates a planar polygon with n vertices defined by coordinate vectors x and y. Xfdtd includes our powerful rotman lens designer tool rld, which is used for the design, synthesis, and analysis of rotman lenses and their variants. Rotman lens design and simulation in software rf globalnet. Section 3 proposes a new design of folded lens while a wrapped lens concept is introduced in section 4. This is followed by choosing proper taper to represent the printed port. 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. Rotman lens design and simulation in software ieee xplore. Theory and design of microstrip rotman lens geometry and design parameters of a microstriprotman lens is shown in fig. It is shown that good agreement between measurements and simulation results is achieved. Design of high performance wide band rotman lens in xband.
Rl port phase centers are obtained by the evaluation of the formulas published by peter s. Performances are compared with the conventional lens for each design. 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. 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. Rotman lens designer rld is a software tool for the design, synthesis and analysis of rotman lenses and their variants. It is an interactive program that allows the user to enter figure 1. Rotman lens design software rld synthesis, analysis. It is based on geometrical optics combined with the classical rotman lens design equations. 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. It is intended for rapid development and analysis of rotman lenses given several physical and electrical input 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. An improved design process is introduced for realizing a conformal rotman lens for cylindrically conformal arrays. A fast raytracing method for microstrip rotman lens analysis. 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.
Different design approaches are explained in detail. 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. A three beam prototype feeding an 8element antenna array working at c band has been simulated using rld v1. Implementation of directionofarrival estimation using. Rotman lens designer rld is a software tool for the design, synthesis, and. Advanced synthesis and em simulation for iot antenna design. Section 2 discusses the design procedure and simulation results of a conformal lens. Tuning a microstrip lens in rotman lens designer rld and. There is a lot of scope in optimizing various parameters which are useful in designing rotman lens. Learn about remcoms unique tool for the design and synthesis of rotman lenses. Design and simulation of a high efficiency rotman lens for mm. This paper presents a trifocal rotman lens antenna design approach.
It is intended for rapid development and analysis of rotman lenses. Rotman lens design and simulation in software application notes. It is based on a combination of theoretical design equations and simple geometrical. Microstrip conformal rotman lens design using particle swarm optimization pso. Simulation results show that the designed lens shows good performance in the operating frequency band of 45ghz. Rotman lens design with hfss link file exchange matlab. The rotman lens and slot antenna are built and optimized in fullwave simulation software. 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. It is based on geometrical optics combined with classical rotman lens design equations. It is intended for rapid development and analysis of rotman lenses given several physical and electrical input. Simulation software in optics and lasers simca, commodpro, spir, thermopt. This paper presents a methodology for design a more reliable printed microstrip rotman lens with the support of electromagnetic simulation software. Passive component design, analysis and simulation 2017.
This paper presents the design, simulation, and fabrication of two rf steerable beamforming networks bfn using a 4. An offset beam produces a path length difference and hence a phase gradient along an array, giving a steered beam. Rotman lens designer rld software package is a tool for the design, synthesis, and analysis of rotman lenses and their variants. The algorithm is based on the magnitude comparison method. Remcom and all other trademarks and logos for the companys products and services are the exclusive property of 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. A multibeam cylindrically conformal slot array antenna based. The rld software can rapidly produce a tuned lens design from a set of design parameters. Design and analysis of antenna feeding networks based on the. The central beam port provides equal path lengths to each array element. Figure 2 kuband microstrip rotman lens figure 3 antenna pattern for different beam positions of microstrip rotman lens 3.
Design method of the rotman lensfed array for multimode oam beams. Rotman lens designer software from remcom rf globalnet. Rotman lens design and simulation in software, ieee microwave magazine, vol. Rotman lens designer rld is a software tool for the design, synthesis, and analysis of rotman lenses and their variants. Rotman lens prototype with 3 beam ports and 7 array ports has been simulated using rld1.
1383 25 846 26 847 290 1506 77 449 1176 1276 1168 1052 68 1374 215 934 1081 231 744 1101 921 1170 211 227 671 665 664 1391 351 1075 1219 870 168 1198 803 159 1096 1069 495 337 1276 622 662 598 473 301 725 1292 1311