Tools for Engineers

Standard Frequency Band Designations

Band Characteristic  Frequency GHz  Wavelength
HF   .003-.03 10-100 m
VHF   .03-.3 1-10 m
UHF   .3–1 .3-1 m
L   1–2 150-300 mm
2-4 75-150 mm
 4-8 37.5-75 mm
X   8-12 25-37.5 mm
Ku  12-18  17.5-25 mm
18-27  11-17.5 mm
Ka  27-40  7.5-11 mm
Millimeter  40-300  1-7.5 mm

Calculator tools

ERP & EIRP Calculator
Frequency Wavelength Calculator

For other calculators :


Electromagnetic Waves - Interactive

Wave Propogation                                  Waveguides
Electromagnetic Wave Propogation           Parallel Plate Waveguide
Polarization                                           Rectangular Waveguide
                                                           Symmetric Dielectric Waveguide

Linear Antennas - Interactive

Simple Far-Field Analysis                         Detailed Analysis
Linear Dipole Antenna                              Detailed Analysis of Linear Antenna
Two Antenna Array                                  Detailed Analysis of Two Array Antenna
N-Antenna Array

Signal Integrity - Interactive

Transients in Terminated Transmission         Transients in TL's with 
Lines (TL)                                                 
Transmission Line with Capacitive Load           TL with Capacitive Discontinuity
Transmission Line with RC Load                     TL with Inductive Discontinuity
Transmission Line with Resistive Load             Multiple Capacitive Discontinuity
Transmission Line with Inductive Load
Transmission Line with RL Load                      Cross-Talk Between TL's
Transient in Lossy Transmission Line               Cross-Talk Between TL-1
                                                                 Cross-Talk Between TL-2

Transmission Lines - Interactive

Interactive Smith Chart                         Transmission Line Properties
Lossless Line                                         Transmission Line Impedance
General Lossy Line                                 Transmission Line Input Impedance
                                                           Standing Wave Patterns (input: Load)
Narrow-band Impedance Matching           Standing Wave Patterns (input: VSWR)
Single Stub Matching                              Lossless Line with 3 Selectable Stubs
Double Stub Matching                             Lossless Line with 3 Shunt Reactances
Series Stub Matching                              General Lossy Line (wide plots)
Quarter Wavelength Transformer
L-Network Matching                              Practical Transmission Lines
General Impedance Transformer              Two Wire Transmission Line Stripline
                                                           Coaxial Cable
Broadband Impedance Matching               Microstrip                      
Broadband Multisection Transformers
Broadband Matching with Taper Lines      Stub Line Analysis
Short Circuited Stub
                                                           Open Circuited Stub

Conversion Tools