Ground de-embedded source reconstruction using a planar array of H-field probes

Kiaee, Ali; Alavi, Rezvan Rafiee; Honari, Mohammad Mahdi; Mirzavand, Rashid; Mousavi, Pedram

doi:10.1109/apusncursinrsm.2017.8072109

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…It is also our goal to modify our method to be capable of de-embedding the effect of RFxpert's ground plane from the multiple planes of magnetic field data that our method requires. This can be, for example, based on the work presented in [157] and will be discussed at the conference.…”

Section: C4 Conclusion and Future Workmentioning

confidence: 99%

Multi-Plane Magnetic Near-Field Data Inversion Using the Source Reconstruction Method

Narendra

Brown

Bayat

et al. 2018

2018 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)

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In this work, we use the electromagnetic inversion (EI) framework to develop/improve algorithms for the purpose of antenna design and characterization. Broadly speaking, antennas are any device, object, or system that can transform energy in the form of guided waves to energy in the form of radiated waves in space. In our increasingly wireless technology landscape, many different types of antennas are being analyzed and developed for a variety of applications. Therefore a flexible design/characterization methodology is required to support our future wireless engineering needs.To this end, we employ an EI methodology that allows the flexibility to develop novel antenna characterization and design algorithms in a variety of applications. In general, electromagnetic inversion enables the determination of an electromagnetic property of interest (e.g., relative permittivity or equivalent current distribution) in an investigation domain by processing some type of electromagnetic data (e.g., complex electric field, phaseless data, or far-field performance criteria) on a separate measurement/desired data domain wherein the investigation and data domains can be arbitrarily shaped; our methodology allows for this flexibility to be utilized. Through the use of this methodology and the electromagnetic surface and volume equivalence principles we develop EI algorithms to contribute to the areas of metasurface design, microwave imaging, and dielectric lens/antenna design. Specifically, (i) we develop and demonstrate a gradient-based EI algorithm that can directly design the circuit admittance profiles of metasurfaces from desired complex or phaseless (magnitude-only) magnetic field data on an external data domain, (ii) we develop and verify inverse scattering algorithms to reconstruct dielectric profiles from phaseless synthetic and experimentally measured data, and finally (iii) we introduce a combined inverse source and scattering technique to tailor electromagnetic fields by designing passive, lossless, and reflectionless dielectric profiles to transform an existing electromagnetic field distribution from a known feed to one that satisfies desired far-field performance criteria such as main beam directions, null locations, and half-power beamwidth. First, I would like thank my advisor and friend Dr. Puyan Mojabi for his guidance throughout my academic journey and for inspiring me to begin the journey in the first place all those years ago in his antennas course at the end of my B.Sc. Thanks also to my friends and colleagues Dr. Trevor Brown, Chen Niu, and Dr. Nozhan Bayat for making my time at the University of Manitoba an absolute joy. I would like to express my gratitude to my Ph.D. internal committee members Dr. Ian Jeffrey, Dr. Jason Fiege, and my external committee member Dr. Andrea Massa for taking the time to help me improve my thesis. Lastly, I'd like to thank the

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Section: C4 Conclusion and Future Workmentioning

confidence: 99%

Multi-Plane Magnetic Near-Field Data Inversion Using the Source Reconstruction Method

Narendra

Brown

Bayat

et al. 2018

2018 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)

View full text Add to dashboard Cite

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“…However, RWG BFs are defined based on the interior edges. Thus, when the surface is open such as the source plane in our problem, (22) is no longer a suitable representation for current because there are some exterior edges as well. Instead, we have…”

Section: Rwg Mommentioning

confidence: 99%

“…Moreover, in RFxpert a finite ground plane is used to separate the probe array from the other RF and digital circuits for EMC/EMI reasons [22]. The H-field probe array is placed on top of a finite PEC ground plane.…”

Section: Introductionmentioning

confidence: 99%

RWG MoM‐via‐locally corrected Nyström method in near‐field to far‐field transformation using very‐near‐field measurement

Alavi

Kiaee

Mirzavand

et al. 2018

IET Microwaves, Antennas & Propagation

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Locally corrected Nyström (LCN) method is used to solve electric field integral equations (EFIE) of the equivalent current method in the planar very‐near‐field measurement of antennas and RF circuits. The exact relationship between the Rao–Wilton–Glisson (RWG) method of moments and first‐order and zero‐order LCN is established for both magnetic and electric currents to ensure normal current continuity between adjacent triangular patches. The proposed method is a point‐based RWG discretisation of EFIE and causes a noticeable decrease in the degree of freedom. It consequently eliminates spurious charges and significantly lowers the condition number of the impedance matrix. Moreover, it is more efficient to be accelerated by fast algorithms such as multi‐level fast multipole method. In what follows, the detailed explanation of the proposed method, along with the examples of current reconstruction and antenna far‐field calculation, is presented.

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A High- Resolution Approach to Extract the the Emissions from a Circuit Board Using the Magnitude-Only Near-Field Measurement

Alavi

Kiaee

Mirzavand

et al. 2018

2018 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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Ground de-embedded source reconstruction using a planar array of H-field probes

Cited by 3 publications

References 11 publications

Multi-Plane Magnetic Near-Field Data Inversion Using the Source Reconstruction Method

Multi-Plane Magnetic Near-Field Data Inversion Using the Source Reconstruction Method

RWG MoM‐via‐locally corrected Nyström method in near‐field to far‐field transformation using very‐near‐field measurement

A High- Resolution Approach to Extract the the Emissions from a Circuit Board Using the Magnitude-Only Near-Field Measurement

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