RESEARCH

Antenna &
Metasurface Engineering

Exploring electromagnetic modes, metasurfaces and circular-polarization mechanisms to develop compact, broadband and high-performance antenna systems.

Characteristic Modes Metasurfaces Circular Polarization Computational Electromagnetics
METASURFACE APERTURE RADIATED EM FIELD
01

Understanding the physics before optimizing the geometry.

My research focuses on understanding the electromagnetic mechanisms responsible for antenna radiation and using this physical insight to guide the development of metasurface, circularly polarized and advanced antenna systems.

Characteristic Mode Analysis provides a physics-based framework to interpret modal currents, eigenvalue behaviour, resonance and radiation. This modal understanding is then combined with full-wave simulation, optimization, fabrication and experimental validation.

Research Themes

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01

Metasurface &
Parasitic Metasurface Antennas

Novel antenna architectures for controlling electromagnetic modes, bandwidth, polarization and radiation characteristics.

Broadband CP · Parasitic loading · Surface engineering
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Characteristic Mode Analysis

Investigation of modal radiation to reveal the underlying physical behaviour of antenna structures.

Modal Significance · Modal currents · Modal manipulations
03

Circularly Polarized Antennas

Engineering orthogonal modes and their relative amplitude and phase conditions to obtain broadband and high-quality circular polarization.

Axial ratio · Orthogonal modes · Phase quadrature
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Advanced Antenna Systems

Compact, reconfigurable and high-performance antennas for emerging wireless, satellite and space communication platforms.

Reconfiguration · Beam control · Emerging wireless

From Electromagnetic Modes to Antenna Realization

A research workflow that connects electromagnetic interpretation with practical antenna development.

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Geometry

Electromagnetic structure definition

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02

Characteristic Modes

Eigencurrents and eigenvalues

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03

Modal Interpretation

Radiation mechanism identification

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Modal Engineering

Mode control

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Full-Wave Design

Feed integration and optimization

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Validation

Fabrication and measurement

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Broadband Circularly Polarized Metasurface Antennas

Reactive loading can reshape the modal behaviour of a metasurface aperture, providing additional control over modal resonance, relative phase and broadband circular-polarization conditions.

Metasurface Geometry
Reactive loading
Modal Control
CP-favorable region λ₁ λ₂
Circular-Polarization Response
AR threshold Broadband CP region Frequency Axial Ratio
Conceptual graphics
02

Seeing the antenna through its natural modes

Characteristic Mode Analysis separates a complex antenna structure into its natural current modes. Tracking these modes across frequency helps identify resonance, radiation potential and modal interactions before the feeding structure is introduced.

Modal significance Characteristic currents Modal radiation
Characteristic current Frequency Eigenvalue

Engineering Orthogonal Modes

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MODE A

Orthogonal Current Mode

One characteristic mode provides the first linearly polarized field component.

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MODE B

Orthogonal Current Mode

A second mode provides the orthogonal electric field component required for CP generation.

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QUADRATURE

Circular Polarization

Balanced modal amplitudes with approximately quadrature phase produce a rotating field vector.

Research Questions We Are Exploring

Current work is directed toward deeper modal interpretation and controllable electromagnetic surfaces for next-generation antenna systems.

01

Broadband modal control

Conditioning characteristic-mode behaviour over an extended frequency range.

02

Surface-wide reactive loading

Exploring distributed reactance control through engineered elements.

03

Broadband circular polarization

Understanding the modal conditions required for stringent axial-ratio performance.

04

Compact multifunctional antennas

Combining bandwidth, polarization and radiation control within low-profile structures.

Research Projects

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RESEARCH PROJECT

Design of Low-Cost Metasurface-Based Circularly Polarized Patch Antennas for Wi-Fi and 5G Communication in Rural Areas

Role Principal Investigator Domain Metasurface Antennas Focus Wi-Fi & 5G Communication

Computational & Experimental Workflow

01

Full-Wave Electromagnetic Simulation

CST Studio Suite and Altair FEKO for antenna, characteristic-mode and radiation analysis.

02

Numerical Post-Processing

MATLAB and Python for modal tracking, trajectory analysis and electromagnetic data processing.

03

Prototype Development

Practical fabrication of planar antenna and metasurface structures for experimental validation.

04

RF Measurement

Impedance, axial-ratio and radiation measurements for comparison with numerical predictions.

RESEARCH · COLLABORATION · STUDENTS

Interested in working together?

Explore our publications, research group or get in touch to discuss research collaboration.