Fastest antenna testing

RFxpert is the only real-time, compact, bench-top antenna measurement device.

What is Antenna Pattern?

Text book definition of antenna pattern or antenna radiation pattern is a graphical representation of the radiation properties (e.g. TRP, gain, efficiency, EIRP, directivity, phase or polarization) of the antenna under test (AUT) as a function of space.

Antenna Pattern Measurement Techniques

Until recently, the two dominant approaches for testing and evaluation of antenna parameters were near-field and far-field measurement techniques.

In the near-field range method antenna emissions are measured in the radiating-near-field region. The results are then projected to the far-field with well-developed and proven algorithms e.g. to offset RF reflections, mutual coupling between the AUT and the measurement antenna/probe, etc. This is critical because most antennas are intended to operate in the far-field region.

A direct far-field measurement method can be performed in outdoor or indoor environments. Smaller antennas can be measured in an anechoic chamber. However, testing larger antennas often requires a remote open-air-test-site (OATS) consisting of a large area in a rural environment to avoid reflections.

Both antenna pattern measurement techniques are costly and require longer times for Antenna Designers and Wireless Engineers to debug their designs, to do rapid prototyping, and to explore new designs, materials and geometries.

Novel Approach to Antenna Pattern Measurement:
Very-Near-Field

RFxpert is a desktop antenna pattern measurement system that characterizes antennas without the need for a chamber. It provides far-field patterns, bisections, EIRP and TRP in less than a second. Novel near-field results, including amplitude, polarity and phase give insights into the root causes of antenna performance challenges and help troubleshoot far-field radiation patterns.

How does it work?




RFxpert measures the magnetic field (H-Field) in two orthogonal directions using H-field probes and projects this data to the far-field using the planar aperture distribution to angular spectrum transformation or plane wave spectrum (PWS) transformation.

A second custom algorithm then adjusts the far-field projection to eliminate the predictable coupling effects of the measurement array of probes. Probe response compensation is also taken into consideration in this algorithm.

EMSCAN meticulously developed this custom algorithm through comprehensive and rigorous R&D efforts to get the most accurate test results.

 

How does the world's quickest and cheapest antenna pattern measurement system RFxpert work?
 

How accurate are the results compared to a CTIA anechoic chamber?


RFxpert measures the characteristics of an antenna in one second compared to hours (including the set-up time) in an anechoic chamber. RFxpert accuracy is +/- 1.5dB. Below are comparative test results:

Customers found very comparable results when they tested efficiency of antennas with CTIA anechoic chamber and RFxpert
Efficiency comparison in the range of 1700 – 2200 MHz done by a reputable cell phone manufacturer

Customers report that TRP measurements of an antenna with RFxpert is almost identical to a CTIA anechoic chamber
TRP comparison of a WCDMA device for Bands 5 & 6 done by another reputable cell phone manufacturer

Base station antenna testing with antenna pattern measurement system RFxpert is very comparable to a CTIA anechoic chamber
Base Station Antenna comparison at 1950 MHz done by a cell phone service provider

 


Since 1989, EMSCAN is the world’s leading developer of fast magnetic very-near-field measurement technologies and applications, providing real-time test solutions to antenna and PCB designers and verification engineers, without the need for a chamber.

The EMxpert, a compact EMC and EMI diagnostic tool, and the RFxpert, an antenna measurement tool, enable engineers to quickly optimize their designs. EMSCAN solutions dramatically increase designer productivity and substantially reduce time-to-market and project development costs.

www.emscan.com

 

REQUEST A FREE evaluation demo kit

Demos are facilitated by a dedicated application engineer, not a sales person.

 
or call 1-877-367-2261

RFxpert Customers
Customers that use fastest antenna test equipment RFxpert. Customers use RFxpert to design smart phone antennas, custom antennas, military antennas, RFiD tags, smart meter antennas, tablets, GPS antennas.

Customer testimonials for the world's fastest antenna test equipment system RFxpert

Jorge I. Ortiz
RF Network & Antenna Engineer,
Mueller Systems

Reduce antenna testing times by 50%

Antenna test equipment allows designers to save

RF Design Engineer,
Leading Military Subcontractor

REQUEST A FREE evaluation demo kit

Demos are facilitated by a dedicated application engineer, not a sales person.

 
or call 1-877-367-2261
 
 
RFxpert Customers
Customers that use fastest antenna test equipment RFxpert. Customers use RFxpert to design smart phone antennas, custom antennas, military antennas, RFiD tags, smart meter antennas, tablets, GPS antennas.
 
 
REQUEST A FREE evaluation demo kit

Demos are facilitated by a dedicated application engineer, not a sales person.

 
or call 1-877-367-2261