Products

Microwave Antennas

Metal-Only Reflectarray (MOR) Antenna

Electrically Large High-gain MOR Antenna

Frequency band: within W band (75–110 GHz)
Measured antenna gain: over 52 dBi
Total number of rectangular grooves: 48,884

Pencil-beam MOR Antenna

Frequency band: 73–81 GHz
Measured antenna gain: 41.5 dBi @ 78.5 GHz
Total number of rectangular grooves: 5,961

Fan-beam MOR Antenna

Frequency band: 55–65 GHz
Measured antenna gain: 27.3 dBi @ 60 GHz

Microstrip Patch Reflectarray Antenna

OAM Mode-canceling Cassegrain Dual-reflectarray Antenna

Frequency band below -9dB reflection: 17.6–19.8 GHz
Cassegrain dual-reflectarray antenna using the same OAM mode numbers in synthesized main reflectarray (l = +1) and sub-reflectarray (l = +1)
Measured antenna gain (l = 0): 27.2 dBi @ 18 GHz when the OAM mode-canceling relation is used
Measured 3dB antenna gain bandwidth: 1.24 GHz
Measured -10dB reflection bandwidth: 1.18 GHz

Subreflector-deformed and Main-reflectarray-synthesized Cassegrain Dual-reflectarray Antenna

Frequency band: 17.5–18.5 GHz
Selective OAM mode (l = 0 or +1) generation by manually replacing the deformed Cassegrain subreflectors
Measured antenna gain (l = 0): 27.9 dBi @ 18 GHz when a normal Cassegrain subreflector is attached

Microstrip Patch Array Antennas

Microstrip Patch Array Antenna with a Selective Superstrate

Frequency band: 14–16 GHz
A selective superstrate enabling us to change the antenna gains and beamwidths in accordance with its rotation angle

Parabolic Reflector Antenna

OAM Mode-combining Cassegrain Dual-reflector Antenna

Frequency band: 17–19 GHz
Combined OAM mode (l = -2) generation using the opposite OAM mode numbers in helicoidal main reflector (l = -1) and subreflector (l = +1)

2×2 Matrix-feed-excited Cassegrain Dual-reflector Antenna

Frequency band: 17.5–18.5 GHz
Measured antenna gain (l = 0): 27.7 dBi @ 18 GHz
Maximum OAM mode isolation: 31 dB @ 18 GHz when l = -1 (Tx) and l = 0 (Rx)
Three OAM mode (l = 0, ±1) generation by 2×2 matrix feed and OAM mode mux (OMM)

Subreflector-deformed Cassegrain Dual-reflector Antenna

Frequency band: 15.1–21.2 GHz
Measured maximum antenna gain: 23.3 dBi @ 18 GHz
OAM mode (l = +1) generation by deforming a Cassegrain subreflector

Lens Antenna

All-dielectric Transmitarray Lens Antenna

Frequency band: 27–33 GHz
Processed holes to generate the OAM modes with l = +1 or -1

Horn Array Antenna

Compact Aperture-coupled 8×8 Horn Array Antenna

Frequency band: 14.4–15.35 GHz
Measured antenna gain: 25.1 dBi @ 14.83 GHz

MEMS Antenna

Floating-patch MEMS Antenna on an HRS Substrate

Frequency band: 39.5–45.5 GHz
Measured antenna gain for 2×2 array: 12 dBi @ 42 GHz
Acknowledgment: Dr. Man-Lyun Ha, who was advised by the Late Prof. Young-Se Kwon in the Department of Electrical Engineering, KAIST, Korea, conducted the whole manufacturing processes based on MEMS technologies.

Orbital Angular Momentum (OAM) Components

OAM Mode Mux (OMM)

Microstrip/Waveguide OAM Mode Mux (OMM)

Frequency band: 17.5–18.5 GHz
Simultaneously generating the antenna inputs (l = 0, ±1) of a 2×2 matrix feed, similar to a Butler matrix

Microwave & RF Simulators

Antenna Simulators

MORSim

Metal-Only Reflectarray Simulator
Computation time: approximately 273 seconds for super-gain MOR antennas with more than 50 dBi antenna gain (diagonal length ≈ 200 wavelengths)
Important features

Automatic design and rapid simulation for metal-only reflectarray (MOR) antennas
Parallel computations using OpenMP, MPI, and GPU CUDA
MARCH (Modified Armijo-Rule-based Conditional Heuristics), bisection, Newton, GA (Genetic Algorithm), PSO (Particle Swarm Optimization), and DE (Differential Evolution) Optimizations

Next-generation Numerical Analysis Engines

ACE NEC-2 Engine

Wire-meshing and partial patch-meshing 64-bit NEC-2 MoM (Method of Moments) engines accelerated by OpenMP and GPU CUDA
Features: precise scattering and radiation analyses for large-scale metallic objects

ACE PO Engine

Patch-meshing 64-bit PO (Physical Optics) and IPO (Iterative PO) engines accelerated by OpenMP and GPU CUDA
Features: approximate scattering analysis for large-scale metallic objects

ACE SBR Engine

Patch-meshing 64-bit SBR (Shooting and Bouncing Ray) engine implemented by NVIDIA OptiX
Features: approximate scattering analysis for large-scale magnetodielectric-coated metallic objects, ray-tracing wireless channel modeling

Microwave Measurement Systems

Near-field Antenna Measurement System

Near-field Antenna Measurement System Using a Camera-based Automatic Positioner

Antenna measurement system capable of planar and circular cylindrical scanning
Camera-based automatic positioner and corresponding software transforming traditional measurement into intelligent and autonomous control
Automatic horizontal, vertical, and azimuthal alignment of a probe by recognizing an antenna under test (AUT)

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