We design and built lots of bespoke antenna  - mainly in the mm-wave region, though we do go down to 2 GHz from time-to-time.

For example, using the design skills of Dr Soe Min Tun, we recently designed, manufactured and had tested by David Gentle at the NPL Antenna range a set of ultra-low (Less than 46dBi) cross-polar high and low W and V band antennas to feed and test an antenna range for a customer of TAS in Cannes

W-band high gains being prepared for shipping .... and it is well protected box below:


TAS in a Box


The tolerance to reach the -47dB cross-polar levels for the low gain antennas was particularly challanging.... making full use of TK Ram





More technical details can be found in a detailed technical note and NPL Measurements. A snippet from the NPL report which show how well one of the low gain antennas performed can be seen below - on boresite X-polar was below 50dBi


Of course, our antenna activities in antennas are not new...

Over the  last  three decades, TK developed a whole range of Antennas for applications in Short range TV distribution, Plasma Fusion Diagnostics and Remote Sensing. Here are some images of a 140 GHz antenna built for Dr.Alessandro Simonetto of the Istituto di Fisica del Plasma in Milan, Italy. This is designed to simulate the HE11 beam generated from a corrugated guide transporting MWatts of power from Gryotrons to the Frascati Tokomak.

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Here the field produced by the antenna is being probed in the nearfield to check that the pattern is correct. Measured 1/e amplitude beamwidth was within 3% of the designed value.

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Here Antonio Caltalfamo, our Italian agent looks on as the tests proceed.

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To insure that no cross-polar siganal could escape from the Antenna when acting as a transmitter a large polarizing grid was placed in the output beam.

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Gaussian Optics Lens antennas

We make GOLA antennas to order, feeding bloomed lenses with corrugated horns.

Antennas for accurate materials measurements

TK develops antennas for materials measurements: Here is an example of a 28 to 40 GHz materials measurement range with two corrugated horn/off-axis mirror antennas used to couple power with very low loss for a UK based research establishment

The antennas are placed in a RAM covered anechoic chamber to minimise reflections and standing waves. Here is a close-up on one of the antennas

These loss measurements, taken with a network analyser for both co-polar and X-polar signals show how effective the antenna is at coupling power across the sample space.

Loss is very low, and (nodoubt due to small calibration errors) actually negative in places: