• G0KSC designed 3el, 40M & 6el 20M (Force 12)

    This antenna uses the G0KSC OP-DES design on both 40m and 20m to provide full-band coverage on each.

  • 6 x 7el WOS 50MHz LFA Yagi

    175' fully rotating tower and 6 x 7el 50MHz WOS LFA Yagis at W7EW

  • 3 el 24MHz LFA Yagi by InnovAntennas

    Serious low-noise performance for the HF bands too!

  • 4 x 6el 50MHz LFA Yagis @ DL5WP

    Those that do their research and want low noise Yagis choose G0KSC designs!

  • 4 x 11el 144MHz LFA's @ F3EGA

    Excellent G/T figure antenna array ensuring F3EGA can hear and be heard!

  • G0KSC Monoband 14MHz Log Periodic

    With a boom of just 2m and F/B in excess of 20dB including full-band coverage, this is a super-compact Field day antenna!

  • 4 x 24el 432MHz LFA @ PA2V

    PA2V selected G0KSC LFAs (built by InnovAntennas) when he wanted the very best in EME performance!

  • 4el 27MHz LFA Yagi by InnovAntennas

    A 4 element 27MHz LFA by InnovAntennas. The LFA can handle 20KW plus and does for many radio stations, commerical and hobby!

Dual Band Quads

21Mhz OWA Yagi Antennas

I have started a series of tutorials on how to use EZNEC for basic Yagi Modelling and if successful, will move on to other antenna software packages too.

Please follow on YouTube and let me know if there is any particular subject you would like to see. Below is an example video ocvering establihsing and applying DL6WU stacking formulas:

 

InnovAntennas invest in Ansys

InnovAntennas have invested in Ansys HFSS 2020 R2, a fully 3-dimensional mesh-based simulation package to help in the perfection and production of the new OWL and LFA Ultra Yagi of light weight Yagis.

Strength, light weight and low wind-load are qualities required in a Yagi by the modern ham in addition, low noise Quite, symmetrical X-pol/crossed Yagis that work well on both VHF/UHF.

HFSS allows for extremely accurate simulation of the complete antenna including booms, insulators, coax cable and so on this removes a lot of manual confirmation time and uncertainty above the final results.

So why not simply apply ‘correction’ to the Yagi elements?

Simple fixed-length correction methods do not give accurate results, especially on 432MHz and up where the errors in this method are accentuated. It is for this reason, there have been no fixed-length correction on 23cms to work well or consistently for example.

On a long 70cms Yagi with a reflector of 340mm and final director of 250mm, applying a fixed length correction (let us say 6mm for example) would mean there is a far higher percentage of correction applied to the last element to that of the first. If this result were to be reverse engineered into simulation software, all elements would be getting progressively longer than those in the original software model and this would result in any low noise characteristics being drastically reduced or lost all together.

Other factors also need to be considered. For example, the first and last elements would require far less correction than those in the middle of the Yagi on the basis there is boom only on one side of each of them. Not just boom diameter but boom wall thickness plays a major role in the final element length as does the drill hole size in the boom the element passes through.

Ansys HFSS gives InnovAntennas the ability to not have to use or apply any correction as each antenna is modelled and finalised with the boom and insulators in place. Once completed, the antenna can be built to the final software suggested sizes and without adjustment is near perfect when built.

The Ansys electronics suite is used to simulate accurately many of today’s problems. Be it antenna placement results on aircraft, or motor vehicles, to air-flow / wind tunnel simulations for the motor industry. HFSS is even used to simulate radiation patterns of mobile/Cell phones when placed within a human hand.

In addition to the standard line of products InnovAntennas offer, customer antennas and systems including EME (Earth moon Earth), Radio Astronomy and OHR (Over the Horizon Radar) are designed and built and now complimented by HFSS.

For more information, contact This email address is being protected from spambots. You need JavaScript enabled to view it.

www.innovantennas.com

www.ansys.com

OE5KE

One of the InnovAntennas new LFA-Ultra Yagis desgined in HFSS using 38mm diameter Boom sections ath the station of Adolf, OE5KE. Adolf chose to go forward with his feedlines rather than the ideal routing of out of the back. This may cause distortion in the pattern this way by SWR in both planes still 'well under1.1:1' Adolf reports.