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Antenna Pattern Viewer

Question asked by JERRY_MARKETOS on Jul 26, 2005
Similar or identical information can be found within the Genesys online HELP by
choosing main menu HELP, then CONTENTS, then switching to the SEARCH tab
and searching for "Antenna", see the response for "Far-Field Radiation Patterns" and others.

Here's some information for getting started with the antenna pattern viewer in GENESYS...

The antenna pattern viewer works with data generated by EMPOWER.
You must have a LAYOUT created with at least one port and analyzed by EMPOWER
before starting the antenna pattern viewer !

Right click on the outputs folder and choose "Add Antenna Plot"
Give it a name or accept the default name.
Generally, select from the measurements below or use the measurement wizard.


ETHETA  E-Theta component of far field
EPHI  E-Phi component of far field
ETOTAL  Total E of far field
ELHCP  E-field Left hand circular polarization
ERHCP  E-field Right hand circular polarization
EAR  E-field Axial Ratio
EMIX  EM currents, X directed
EMIY  EM currents, Y directed
EMIZ  EM currents, Z directed


Patch antennas are used in an ever-increasing range of wireless applications.  The low cost of manufacturing and the small size are ideal for hand-held devices.  GENESYS V2002.09 extends the power of antenna electromagnetic simulation to include the display of antenna patterns.  Fully integrated into the GENESYS environment, you can see patterns from configurations of metal on multiple levels, even helping you understand unintended trace radiation.

Antenna pattern plots are created for arbitrary topologies using data calculated from EMPOWER, the GENESYS planar electromagnetic simulator.  You have the ability to simulate free-space and substrate-embedded antenna designs as well as conventional patch antennas.  Antenna pattern plots will display in 3D space by sweeping azimuth and elevation.

The EMPOWER far-field radiation viewer data describes the electric field patterns in the far-zone region radiated from a structure.  The far-zone is defined as the region where 2lR/l » 1, where R is the distance from the structure and lambda (l) is the wavelength of the signal exciting the structure. This means that the distance from the antenna is many wavelengths.  Far-field radiation patterns are described in a spherical coordinate system, where phi is the angle on the xy plane from the positive x-axis, and theta is the angle from the vertical (positive z) axis.  

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