RF Photonics Lab

POST ARCHIVE:

Calculating Bandwidth for RF/Photonic Components based on Velocity mismatch June 24, 2021
Optical Isolators and Photonic Integrated Isolators June 8, 2021
Photolithography for Device Fabrication December 18, 2020
Photonic Components: Multimode Interference Waveguides December 18, 2020
Designing a Waveguide Photodetector in Rsoft October 29, 2020
IMD3: Third Order Intermodulation Distortion September 11, 2020
Mode Converters and Spot Size Converters September 10, 2020
Discrete-Time Signals and System Properties September 8, 2020
MMIC – A Revolution in Microwave Engineering September 3, 2020
Arrayed Waveguide Grating for Wavelength Division Multiplexing August 30, 2020
Methods of Optical Coupling August 29, 2020
RF Spectrum Analyzers August 27, 2020
Programs for PIC (photonic Integrated Circuit) Design August 25, 2020
Ring Resonators for Wavelength Division Multiplexing July 23, 2020
Quantum Well: InP-InGaAsP-InP July 6, 2020
Capacitance and Parallel Plate Capacitors July 5, 2020
Electric Potential and Electric Potential Energy July 4, 2020
Dipole Moment July 3, 2020
Electric Force & Electric Field July 2, 2020
Coulomb Force July 1, 2020
Noise Figure June 30, 2020
Dispersion in Optical Fibers June 29, 2020
RF Over Fiber Links June 28, 2020
Erbium Doped Fiber Amplifiers (EDFA) June 27, 2020
RSoft Tutorials 9. Using Real Materials and Multilayer Structures June 26, 2020
Rsoft Tutorials 8. Air Gaps June 25, 2020
Rsoft Tutorials 7. Index Grating June 24, 2020
Rsoft Tutorials 6. Multiple Launch Fields, Merging Parts June 23, 2020
The Pockels Effect and the Kerr Effect June 22, 2020
Rsoft Tutorials 5. Pathway Monitoring (BeamPROP) June 21, 2020
Rsoft Tutorials 4. Multi-Layer Profiles June 20, 2020
Rsoft Tutorials 3. Fiber Structures and BeamPROP Simulation Animations June 19, 2020
Rsoft Tutorials 2. Simulating a Waveguide using BeamPROP and Mode Profile June 18, 2020
Rsoft Tutorials 1. Getting Started with CAD (tapered waveguide) June 17, 2020
Methods of Calculation for Signal Envelope June 16, 2020
Receiver Dynamic Range June 15, 2020
Semiconductor Growth Technology: Molecular Beam Epitaxy and MOCVD June 14, 2020
Discrete Time Filters: FIR and IIR June 13, 2020
Heterostructures & Carrier Recombination June 12, 2020
The Acoustic Guitar – Intro June 11, 2020
Materials & Photogeneration Rate at 1550 nm June 10, 2020
Microstrip Antenna – Cavity Model June 9, 2020
HF Antenna Matched Network for a Radio Broadcasting Station June 8, 2020
Microstrip Patch Antennas Introduction – Transmission Line Model June 7, 2020
The Helical Antenna June 6, 2020
The Superheterodyne Receiver June 5, 2020
Conduction & Valence Band Energies under Biasing (PN & PIN Junctions) June 4, 2020
RADAR Range Resolution June 3, 2020
Energy Bandgaps June 2, 2020
PN Junction Simulator in ATLAS June 1, 2020
ATLAS TCAD: Simulation of Frequency Response from Light Impulse May 31, 2020
High Speed UTC Photodetector Simulation with Frequency Response in TCAD May 30, 2020
Sinusoidal and Exponential Sequences, Periodicity of Sequences May 29, 2020
Mathematical Formulation for Antennas: Radiation Integrals and Auxiliary Potentials May 28, 2020
Discrete-Time Impulse and Unit Step Functions May 27, 2020
Image Resolution May 26, 2020
Spatial Resolution of a Microscope May 25, 2020
Telescope Resolution & Distance Between Stars using the Rayleigh Limit May 24, 2020
Diffraction, Resolution and the Rayleigh Criterion May 23, 2020
Optical Polarizers in Series May 22, 2020
Jones Vector: Polarization Modes May 21, 2020
Acoustics and Sound: The Vocal Apparatus May 20, 2020
The Cavity Magnetron May 19, 2020
Optical Polarization, Malus’s Law, Brewster’s Angle May 18, 2020
Fourth Generation Optics: Thin-Film Voltage-Controlled Polarization May 17, 2020
LED Simulation in Atlas May 16, 2020
Pulsed Lasers and Continuous-Wave Lasers May 15, 2020
Monochromaticity, Narrow Spectral Width and High Temporal & Spatial Coherence May 14, 2020
AlGaAs/GaAs Strip Laser May 13, 2020
Quality Factor May 12, 2020
Bragg Gratings May 11, 2020
Photodetectors and Dark Current May 10, 2020
Carrier Recombination May 9, 2020
Rayleigh Scattering May 8, 2020
The Electronic Oscillator May 7, 2020
Deriving Newton’s Lens Equation for a diverging lens May 6, 2020
Pseudomorphic HEMT May 5, 2020
Parameter Analysis of the MESFET, Channel Width Calculation May 4, 2020
GaAs MESFET Designs May 3, 2020
Basic Energy Band Theory May 2, 2020
Object Oriented Programming and C#: Dictionaries/Hash Tables May 1, 2020
The Half Wave Dipole Antenna April 30, 2020
Focal Length of a Submerged Lens April 29, 2020
Infinite Lateral Magnification of Lenses and Mirrors April 28, 2020
Focal Length of a Lens as a function of light frequency April 27, 2020
Object Oriented and C#: Quadratic Roots Program April 26, 2020
E-K Diagrams April 25, 2020
The Radar Range Equation April 24, 2020
HFSS: Conical Horn Antenna Simulation April 23, 2020
Object Oriented Programming and C#: Program to Determine Interrupt Levels April 22, 2020
Object Oriented Programming and C#: Fractions Program April 21, 2020
Refractive Index as a Function of Wavelength April 20, 2020
Refractive Index, Speed of Light, Wavelength and Frequency April 19, 2020
Yagi-Uda Antenna/Parasitic Array April 18, 2020
III-V Semiconductor Materials & Compounds April 17, 2020
HFSS – Simulation of a Square Pillar April 16, 2020
Miller Effect April 15, 2020
Beamforming April 14, 2020
RF Mixer basics April 13, 2020
High Speed Waveguide UTC Photodetector I-V Curve (ATLAS Simulation) April 12, 2020

VHF and UHF April 11, 2020
P-I-N Junction Simulation in ATLAS April 10, 2020
Introduction to Electro-Optic Modulators April 9, 2020
Optical System Design using MATLAB April 8, 2020
HEMT – High Electron Mobility Transistor April 7, 2020
Off Topic: Planet Earth – Climates and Deserts April 6, 2020
Thick Lens Equation – Trigonometric Derivation and Matrix Formation April 5, 2020
Semiconductor Distribution of Electrons and Holes April 4, 2020
Applications of the Paraxial Approximation April 3, 2020
Thermoelectric Effect, Thermoelectric current and the Seebeck Effect April 2, 2020
Object Oriented Programming and C#: Simple Program to add three numbers April 1, 2020
Object Oriented Programming and C#: Shallow vs Deep Copying March 31, 2020
Power Factor and the Power Triangle March 30, 2020
Photovoltaic Effect and Theory of Solar Cells March 29, 2020
Ray Tracing Examples (1) Curved Mirrors March 28, 2020
Principles of Ray Tracing (1) March 27, 2020
RFID – Radio Frequency Identification March 26, 2020
Automotive Electrical System March 25, 2020
Using GIT – Introduction March 24, 2020
Mobility and Saturation Velocity in Semiconductors March 23, 2020
Transistor IV curves and Modes of Operation/Biasing March 22, 2020
Quantum Wells in LEDs March 21, 2020
Power Amplifiers basics March 20, 2020
Object Oriented Programming and C#: Methods March 19, 2020
Hermitian Operators, Time-Shifting Wavefunction March 18, 2020
Ψ Wavefunction Describes Probability March 17, 2020
Matrices, Multiple Dimensions in Quantum Mechanics March 16, 2020
Operators in Quantum Mechanics March 15, 2020
Direct-Bandgap & Indirect-Bandgap Semiconductors March 14, 2020
DeBroglie Relations and the Scale of Quantum Effects (MIT OpenCourseWare) March 13, 2020
Advanced Electronics and Optoelectronics: The MESFET March 12, 2020
Ray Tracing with Snell’s Law – Optics, ECE591 March 11, 2020
Object Oriented Programming and C#: Exception Handling March 10, 2020
Object Oriented Programming and C#: Interfaces March 9, 2020
Object Oriented Programming and C#: Cars Exercise March 8, 2020
Objected Oriented Programming and C#: Enumerations March 7, 2020
Object Oriented Programming and C#: Partial Classes March 6, 2020
Object Oriented Programming and C#: Nested Classes March 5, 2020
de Broglie’s “Matter Waves” and Full Schroedinger’s Equation March 4, 2020
Compton Wavelength of a Particle, Compton Scattering March 3, 2020
Entanglement, Mach-Zehnder Interferometer March 2, 2020
Non-determinism & Superposition in Quantum Mechanics March 1, 2020
Linearity of Quantum Mechanics, Schödinger’s Equation February 29, 2020
Tape Measure Yagi Antenna February 28, 2020
Object Oriented Programming in C# – Constructors February 27, 2020
Keysight ADS – Microstrip Line Design February 26, 2020
Optical Waveguides February 25, 2020
Optoelectronic Integrated Circuit Substrate Materials February 24, 2020
Keysight ADS – Frequency Dependence of Microstrip Lines February 23, 2020
Gas Laser and Semiconductor Lasers February 22, 2020
Keysight ADS – Transient Propagation February 21, 2020
The Quantum Well February 20, 2020
Acoustics and Sound: Beating February 19, 2020
Keysight ADS – Conjugate Matching February 18, 2020
Keysight ADS – Quarter Wave Transformer Matching February 17, 2020
Acoustic and Electromagnetic Waves – Problems (Part I) February 16, 2020
Hermite-Gaussian, Laguerre-Gaussian and Bessel Beam February 15, 2020
ARRL Examination Study (Part II) February 14, 2020
Gaussian Beam Transmission Through Optical Components February 13, 2020
The Gaussian Beam February 12, 2020
Keysight ADS – Short Circuit Terminated Ideal Transmission Line February 11, 2020
Wave Optics – Interference, Interferometers February 10, 2020
Keysight ADS – Open Circuit Analysis February 9, 2020
Keysight ADS – Extraction of Lumped Element Model from Coaxial Line using Short Circuit Analysis February 8, 2020
The Bipolar Transistor, Modes of Operation February 7, 2020
Ferrimagnetic Materials – Circulators and Isolators and Ferrite Phase Shifters February 6, 2020
Impedance Matching – Single Stub Tuning February 5, 2020
Limitations of Impedance matching Networks and the Bode-Fano Criterion February 4, 2020
028/100 VSWR Circles on the Smith Chart February 3, 2020
Microstrip Stub Low-Pass Filter (10 GHz) February 2, 2020
The Schottky Diode February 1, 2020
Common Emitter Amplifier January 31, 2020
Wave Optics – Transmission, Grating and Lenses January 30, 2020
Diode Voltage Clipping Circuits January 29, 2020
Wave Optics – Reflection, Refraction January 28, 2020
Messing with Substrates (10 GHz bandpass filter) [silly] January 27, 2020
Microstrip Lange Coupler (5 GHz) January 26, 2020
Common Collector BJT Amplifier January 25, 2020
Fundamental Parameters of Antennas January 24, 2020
The Oscillator January 23, 2020
ECE530 Advanced Electronics and Optoelectronics 1/21/2020 Class Notes (1st lecture) January 22, 2020
Review of OP-AMPs January 22, 2020
Wave Optics – Introduction January 21, 2020
The Zeigenark Effect, Freeing Cognitive Resources January 20, 2020
027/100 Shunt Reactance on Smith Chart January 19, 2020
Common Source JFET Amplifier January 18, 2020
ARRL Examination Study (Part I) January 17, 2020
Feed Lines (HAM Radio) January 16, 2020
Microstrip Double-Stub Load Matching January 15, 2020
Ray Optics – Graded-Index Fibers, Matrix Optics January 14, 2020
The Human Ear January 13, 2020
026/100 Lumped Element Smith Chart Movements: Series Inductor January 12, 2020
BJT vs. FET January 11, 2020
Quarter Wave Transformer Matching – Using Theory of Multiple Reflections January 10, 2020
Distributed Antenna Systems January 9, 2020
Microstrip Zig-Zag Passband Filter January 8, 2020
Planar Boundaries, Total Internal Reflection, Beamsplitters January 7, 2020
Sound – ADSR Envelope January 6, 2020
Microstrip Stepped Impedance Low-Pass Filter January 5, 2020
The P-N Junction January 4, 2020

Random Variables, PDFs and CDFs January 3, 2020
P-Type and N-Type Semiconductors January 2, 2020
Permittivity January 1, 2020
Mirrors in Geometrical Optics, Paraxial Approximation December 31, 2019
Electroacoustic Transducers December 30, 2019
025/100 Smith Chart Impedance Plotting December 29, 2019
Fermi Level in Semiconductor Materials December 28, 2019
Displacement Current December 27, 2019
Crystal Structures December 26, 2019
Reflection and Transmission of Sound December 25, 2019
Postulates of Ray Optics December 24, 2019
Introduction to Acoustic Waveguides/Cavities December 23, 2019
Review of Fourier Series December 22, 2019
Del Operator, Curl, Divergence, Gradient, Laplacian December 21, 2019
Simple Harmonic Oscillator December 20, 2019
Ray Optics & Geometrical Optics (Introduction) December 19, 2019
Quantum Theory of Solids December 18, 2019
Optics, Optoelectronics, Electro-Optics and Photonics December 17, 2019
Half-Wave Dipole Antenna Transmitter December 16, 2019
Branches of Optics December 15, 2019
OrCAD PCB Layout December 2, 2019
OrCAD Schematic – (Senior Design Project) November 30, 2019
Microstrip Coupled Line Bandpass Filter November 29, 2019
Negative Resistance November 28, 2019
Doppler Effect November 27, 2019
034/100 Loaded Q and External Q November 26, 2019
033/100 Parallel Resonant Circuits November 25, 2019
032/100 Series Resonant Circuits November 24, 2019
Skin Effect November 23, 2019
Interferometry – Introduction November 22, 2019
023/100 Distributed Bias Feed Design November 21, 2019
022/100 Microstrip Bias Feed Networks November 20, 2019
021/100 Distributed Inductance and Capacitance November 19, 2019
020/100 Open-Circuited Transmission Line with Termination November 18, 2019
019/100 Open-Circuit Transmission Line November 17, 2019
018/100 Short-circuited Transmission Line November 16, 2019
IP3 Distortion and Linearity November 14, 2019
Scattering Parameters November 13, 2019
Smith Chart November 12, 2019
Random Signal Analyzer – MATLAB November 10, 2019
Angle Modulation November 9, 2019
Welcome to the Students’ Page for the RF/Photonics Lab at UMASS Dartmouth November 9, 2019
Fiber Optics (Introduction) November 8, 2019
Rat Race Coupler: ADS November 7, 2019
Frequency Shift Keying November 6, 2019
Directional Coupler ADS Simulation October 30, 2019
HFSS RCS Backscatter Analysis October 26, 2019
MATLAB Data Analysis – Senior Design Project Component October 22, 2019
ADS Coupler Momentum Simulation October 18, 2019
NanoVNA – Handheld Vector Network Analyzer 50kHz-900MHz October 12, 2019
I-Q Demodulation for Radar Cross Section Measurements October 11, 2019
Branchline Coupler – EM Simulation October 10, 2019
MATLAB Simulation: Voltage Control Oscillator October 9, 2019
ADS Momentum Simulation October 8, 2019
Quadrature Hybrid Coupler October 4, 2019
Smith Chart Impedance Matching September 17, 2019
016/100 Example 2.9-1 Waveguide Insertion Loss June 29, 2019
014/100 Example 2.4-1 VSWR Measurement of Series RLC June 27, 2019
013/100 Example 1.5-2B Physical Capacitor Q Factor versus Frequency June 26, 2019
012/100 Example 1.5-2A Dissipation Factor in Capacitor June 25, 2019
011/100 Example 1.5-1 Single Layer Capacitor June 24, 2019
010/100 Example 1.4-6 Magnetic Core Inductors June 23, 2019
008/100 Example 1.4-4 Q Factor of Air Core Inductor June 21, 2019
007/100 Example 1.4-3 Air Core Inductor Equivalent Network June 20, 2019
006/100 Example 1.4-2 Air Core Inductor June 19, 2019
004/100 Example 1.3-1B Parasitic Elements of a Physical Resistor vs. Frequency June 17, 2019
003/100 Example 1.3-1A Ideal Resistors June 16, 2019
002/100 Example 1.2-4 Skin Effect and Flat Ribbons June 15, 2019
001/100 Example 1.2-1 Reactance and Inductance with respect to Frequency June 14, 2019
100 ADS Design Examples, RF and Microwave Circuit Design June 13, 2019
OrCAD Tutorial/Study Guide May 26, 2019
Differential Amplifier April 30, 2019
20 GHz RF Amplifier Design – ADS April 30, 2019
Digital Alarm Clock April 27, 2019
References April 25, 2019

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