Implementation of dynamic Hadamard diffuser as a frequency selective surface for W‐band active millimeter wave imaging

Islam, Md. Saiful; Stiens, Johan; Jaeger, Irina; Poesen, G.; Vounckx, Roger

doi:10.1002/mop.24363

Cited by 2 publications

(1 citation statement)

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“…The mm-wave coherence controllable diffuser can be designed with complex grounded FSS array where the elementary blocks are finite size FSS arrays. For the design of such practical diffuser system it is very important to know the characteristic of finite extent FSS arrays [2,3].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Experimental Verification of W-Band Finite Frequency Selective Surfaces on Infinite Background With 3d Full Wave Solver Nspwmlfma

Islam¹,

Stiens²,

Poesen³

et al. 2010

PIER

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Abstract-We present the design, processing and testing of a W-band finite by infinite and a finite by finite Grounded Frequency Selective Surfaces (FSSs) on infinite background. The 3D full wave solver Nondirective Stable Plane Wave Multilevel Fast Multipole Algorithm (NSPWMLFMA) is used to simulate the FSSs. As NSPWMLFMA solver improves the complexity matrix-vector product in an iterative solver from O(N 2 ) to O(N log N ) which enables the solver to simulate finite arrays with faster execution time and manageable memory requirements. The simulation results were verified by comparing them with the experimental results. The comparisons demonstrate the accuracy of the NSPWMLFMA solver.We fabricated the corresponding FSS arrays on quartz substrate with photolithographic etching techniques and characterized the vector S-parameters with a free space Millimeter Wave Vector Network Analyzer (MVNA).

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Section: Introductionmentioning

confidence: 99%