Antenna Modeling
L. B. Cebik, W4RNL

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Because computerized antenna modeling has become widespread, and its popularity as a design tool continues to increase, this series will be devoted to helping you get the most from the design software you use. The articles will focus upon the use of NEC and MININEC, along with useful adjunct software. There are twin goals: to help you get the most out of your modeling efforts and to help you avoid the pitfalls and temptations built into modeling systems and their use. In the process, you may even come to understand your antennas a little better. This series appears as a monthly column in AntenneX.

Index

No.

Title

44

Designing With NEC: A Case Study: Part 1: The 4 Ss

43

Modeling Element Substitutes

42

Moving and Rotating

41

Multiple-Feedpoint Loop Modeling

40

Resolution

39

Radials: Complex Radials Systems

38

Radials: Segmentation and Convergence

37

Verticals: Using the MININEC Ground

36

Getting a Grip on AZ/EL and Phi/Theta

35

Notes on Using AZ-EL Plots Effectively

34

The Second Ground Medium

33

A Clean Sweep

32

A Case Study: Rotating a Beam

31

A Case Study: a 90' Wire

30

Modeling By Equation
D. Scratch Pads and Coordinates

29

Modeling By Equation
C. Formulas and Blocks

28

Modeling By Equation
B. Bigger and Better Things

27

Modeling By Equation
A. A Beginning

26

The Scales of Equivalence

25

Bringing Up the Rear: Front-to-Back Ratios

24

The Power and the Source

23

Modeling LPDAs

22

Physical Models of Parallel Transmission Lines

21

The NEC TL Facility

20

The Average Gain Test

19

What Can We Learn From Tables?

18

Why Tri-Banders Are Hard to Model

17

Notes on Reactive Antenna Loads and Their NEC Models:
E. Some Unfinished Business on Modeling Loads

16

Notes on Reactive Antenna Loads and Their NEC Models:
D. Some Solenoid Loading Basics

15

Notes on Reactive Antenna Loads and Their NEC Models:
C. Some Linear Loading Basics

14

Notes on Reactive Antenna Loads and Their NEC Models:
B. Some Mid-Element Loading Basics

13

Notes on Reactive Antenna Loads and Their NEC Models:
A. Some Center Loading Basics

12

Verticals At & Over Ground: Sensible Expectations

11

A Ground is Just a Ground: Unless It Is a Model of a Ground!

10

Tapering to Perfection

09

Modeling Ground Planes & Other Radial Systems

08

Modeling Wire Arrays

07

Maximizing Your Data

06

Modeling Loads: What Kind, How Much & Where?

05

Putting Sources Where You Can Find Them

04

A Good Start is Half the Trip

03

Within the Lines: NEC-2

02

Under the Limits: MININEC

01

Converging Toward Excellence

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