AntCal Documentation

Field (WIP)

Visualize vector fields in an interactive SVG.

TODOs:

Vector length control
Vector arrow
Vector arrow shape selection

Limitations:

Only supports field data files (.fld) exported from ANSYS HFSS
Currently, only grid-based vector field is supported (vector shape: [x, y, z, u, v, w])

How to export vector fields in ANSYS HFSS

Measure the bounding box (Cartesian coordinate system) of the area of interest
Open the Field Calculator
Select the desired data (e.g., Vector_E) and copy it to the stack (or construct your own data)
Select the correct context (especially the phase)
Click “Export…”
Use “Calculate grid points”, fill in the grid dimensions based on the bounding box
Check “Include points in output file” to include vector starting positions in the file
Save the .fld file

Report (TODO)

Upload data files to generate figures.

Radiation Pattern

Simulate radiation pattern based on electric or magnetic sources.

Limitations:

Currently all sources are positioned at the origin
Amplitudes are normalized to the maximum radiation of E-/M-dipole respectively
Far fields are sampled with limited resolution of 1°

E-dipole:

Gain $θ$ : $\sin(\theta)\cos(\phi)$
Gain $ϕ$ : $\sin(\phi)$

Demo

Module Parameters: $[lpwl\_, {theta\_, phi\_}, mesh\_, opac\_, step\_, pg\_]$

\operatorname{fun} = \begin{dcases} \frac{\left|\pi Lpwl \sin{(\pi Lpwl \cos{\Xi})} \sin{\pi}\right|}{\cos{\Xi}} & \text{if } \frac{\left|\cos{(\pi Lpwl \cos{\Xi})}-\cos{(\pi Lpwl)}\right|}{\sin{\Xi}} = \text{Indeterminate} \\ \frac{\left|\cos{(\pi Lpwl \cos{\Xi})} - \cos{\pi Lpwl}\right|}{\sin{\Xi}} & \text{otherwise} \end{dcases}

where $\Xi$ is $[0, \pi, \pi / 180]$ .

\operatorname{max} = \operatorname{Max(\operatorname{fun})}

\operatorname{l}(th\_, ph\_) = [\sin(th\ deg)\cos(ph\ deg), \sin(th\ deg)\sin(ph\ deg), \cos(th\ deg)]

\operatorname{lr}(th\_, ph\_, t\_, f\_) = \sin(th\ deg)\cos(ph\ deg)\sin(t)\cos(f) + \sin(th\ deg)\sin(ph\ deg)\sin(t)\sin(f) + \cos(th\ deg)\cos(t)

M-dipole:

Gain $θ$ : $\sin(\phi)$
Gain $ϕ$ : $\sin(\theta)\cos(\phi)$

Linear Combination with Arbitrary Phase Shift ¹

We have

a\sin(x+\theta_a)+b\sin(x+\theta_b)=c\sin(x+\varphi)

where $c$ and $\varphi$ satisfy

\begin{gather*} c=\sqrt{a^2+b^2+2ab\cos(\theta_a-\theta_b)}\text{,} \\ \varphi=\operatorname{atan2}(a\cos\theta_a+b\cos\theta_b,\ a\sin\theta_a+b\sin\theta_b)\text{.} \end{gather*}

Note: $\operatorname{atan2(y,\ x)}$ uses Numpy’s arctan2 ↗ parameter order.

Reference

See IEEE Author Center ↗.

10pt is used by the vast majority of papers.

—How to Use the IEEEtran LaTeX Class

Format and save your graphics using a suitable graphics processing program that will allow you to create the images as PostScript (PS), Encapsulated PostScript (.EPS), Tagged Image File Format (.TIFF), Portable Document Format (.PDF), or Portable Network Graphics (.PNG).

Most charts, graphs, and tables are one column wide (3.5 inches / 88 millimeters / 21 picas) or page wide (7.16 inches / 181 millimeters / 43 picas). The maximum depth a graphic can be is 8.5 inches (216 millimeters / 54 picas).

Author photographs, color, and grayscale figures should be at 300 dpi. Lineart, including tables should be a minimum of 600 dpi.

While IEEE does accept vector artwork, it is our policy is to rasterize all figures for publication. This is done in order to preserve the figures’ integrity across multiple computer platforms.

All color figures should be generated in RGB or CMYK color space. Grayscale images should be submitted in Grayscale color space. Line art may be provided in grayscale OR bitmap colorspace.

When preparing your graphics IEEE suggests that you use of one of the following Open Type fonts: Times New Roman, Helvetica, Arial, Cambria, and Symbol.

—Preparation of Papers for IEEE Transactions and Journals (April 2013)

Trigonometric Identities ↗ ↩