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Rotman Lens-Based Retrodirective Array
IEEE Transactions on Antennas and Propagation, 2012 A new type of broadband retrodirective array, which has been constructed using a microstrip Rotman lens, is presented. Automatic tracking of targets is obtained by exploiting the conjugate phase response of the beamforming network which is exhibited when the input ports are terminated with either open or short circuits. In addition, the true time-delay
Cahill, Robert +6 more
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Miniaturized Rotman lens with applications to wireless communication
Frontiers of Information Technology and Electronic Engineering, 2020Rotman lens is a type of beamforming network with many advantages, such as true-time delay characteristic, multibeam capability, and wide bandwidth. Rotman lens has been used in a wide range of applications in today’s wireless communication systems. However, the size of a conventional Rotman lens is considerably large.
Qiuyan Liang +2 more
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Retrodirective Rotman lens constraining factors
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012 The mechanism by which a retrodirective Rotman lens operates is examined theoretically and prediction is compared with measurement. By deriving the reflection matrix based on the phase delay relationship between the beam ports and the array ports we show that if the phase delay difference between neighbouring ports is constrained in a particular way ...
Yunhua Zhang +4 more
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A design of microstrip Rotman lens
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2012Rotman lens is very useful multiple beam generator in microwave engineering. In this paper complete design formula of microstrip Rotman lens are derived and a design example is presented, measured results are also given which show that the design is good.
Z. X. Wang, D. P. Fan, L. Z. You
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Fast design of Rotman lens and its application in Rotman-DRA phased array
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015For fast design of Rotman lens the symmetry plane is used to reduce the structure size, but solved twice. One solution with the symmetry plane as electrical wall and the second with magnetic wall are used. Then process the s-parammeters from both solution to obtain the s-parameters for the original lens for even or odd number of ports.
Mohammad Ranjbar Nikkhah, Ahmed Kishk
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A Design of Ultra-Wideband Rotman Lens
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2023Junxiao Wang +3 more
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Reconfigurable beam forming using phase-aligned Rotman lens
IET Microwaves, Antennas and Propagation, 2012 The authors describe how a standard Rotman lens design can be readily adapted in order to allow reconfigurable beamforming. This is achieved by applying concurrent excitations to the modified Rotman lens.
Robert Cahill, George Goussetis
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Reduced-Sidelobe Multibeam Array Antenna Based on SIW Rotman Lens
IEEE Antennas and Wireless Propagation Letters, 2020 © 2002-2011 IEEE. A multibeam array antenna (MAA) fed by a Rotman lens with a reduced sidelobe level (SLL) is designed using a substrate integrate waveguide (SIW) technology.
Y Jay Guo, Yong-Ling Ban, Ji-Wei Lian
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2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
One of the challenges of designing UAVs is the limited amount of interior space for components. The communication, navigation, and radar systems all compete for this limited space. Phased array antenna systems, in turn, save space, weight, and power by steering the antenna electrically versus mechanically. Rotman lens devices (Fig.
Naftali Herscovici +4 more
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One of the challenges of designing UAVs is the limited amount of interior space for components. The communication, navigation, and radar systems all compete for this limited space. Phased array antenna systems, in turn, save space, weight, and power by steering the antenna electrically versus mechanically. Rotman lens devices (Fig.
Naftali Herscovici +4 more
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A novel rotman lens in SIW technology
2007 European Microwave Conference, 2007This paper presents a novel Rotman lens in low-cost substrate integrated waveguide (SIW) technology. An original solution is proposed for the design of the adsorbing load at the sidewalls of the lens and for the phase-shifters at the output ports. A three beam prototype feeding an 8-element array working at Ku band has been fabricated and tested.
SBARRA, ELISA +3 more
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