ELDIS Pardubice

ELDIS Pardubice Develops Omnidirectional Phased Array Antenna Using AWR Software
With Microwave Office software, we were able to design and analyze the complex radar feeding network 30 percent faster.
Dr. Vadim Zavodny
Senior RF Engineer
ELDIS Pardubice

ELDIS Pardubice Develops Omnidirectional Phased Array Antenna Using AWR Design Environment

Company Profile

ELDIS Pardubice was established in July 1991 to provide complex radiolocation solutions for customers’ demanding requirements for in-air traffic control and air defense applications. The main activities of ELDIS are focused on developing and manufacturing radar technology and systems for air traffic control.

The Design Challenge

ELDIS Pardubice designer Vadim Zavodny was challenged with developing a new antenna array with omnidirectional far field. While the current ELDIS antenna design works correctly, the company wanted a new design that was omnidirectional. 

Omnidirectional antennas are widely used for non-directional antennas because they radiate equally in all horizontal directions while the power radiated drops off with elevation angle -- so little radio energy is aimed into the sky or down toward the earth and wasted. Omnidirectional antennas are widely used for radio broadcasting antennas and in mobile devices that use radios such as cell phones, FM radios, walkie-talkies, wireless computer networks, cordless phones, and GPS. In addition, they are used for base stations that communicate with mobile radios, such as police and taxi dispatchers and aircraft communications. 

The first challenge was to show a true antenna element that has an omnidirectional pattern at azimuth plane. The best choice was a dipole, which is axially oriented and produces an antenna element array at the vertical layout.

The second challenge was the feeding network, which was designed with an array of 10 elements. The feeding network for a 10-port antenna array, as well as each element, needs complex amplitude and phase because it must be built in a cosecant squared pattern.

The feeding network has the output for the antenna array on the left with a one-port input on the right. The final challenge was how to calculate the antenna vector.

The Solution

To address each of these challenges, the designer used AWR Design Environment™ software, which enables calculation of the antenna factor based on the signal-feeding network. The visual basic (VBA) macro was created using AWR software scripting tools. The VBA macro allowed the designer to analyze the complex feeding network in AWR software with a time savings of greater than 30 percent.

Why AWR Design Environment

The designer chose AWR Design Environment because the software offers good availability of microwave circuit libraries and strong and efficient optimization. With the VBA macro, the complex feeding network was analyzed more quickly. In addition, the designer noted that AWR software has good documentation and a collection of “how-to” videos and application notes.

To continue to read the full story, click to download the PDF document below...

Related Video:
Simulation of Phased Array Presentation

Related customer stories

We chose AXIEM because of its speed, capacity and accuracy. It enabled us to shorten our design process. AXIEM helped us deliver a higher performing antenna product in less time while also reducing design and manufacturing costs.
Shinichi Goto
Design Manager
Read story
Collaboration of antenna design with RF front-end module design, on a common Microwave Office platform, enabled breakthrough success of this project.
Juha Ellä (left) and Prasadh Ramachandran (right)
Principle Scientist - Senior Research Engineer
EPCOS and Pulse Electronics
Read story
The advanced AWR Design Environment platform provides us with a flexible platform for our antenna solution design needs. We can rely on the accurate models and trust the simulation results, which leads to fewer design spins. With Microwave Office we are able to accurately design our complex products and get them to market faster.
Kimmo Koskiniemi
Engineering Group Manager
Pulse Electronics
Read story