Check out our high & medium gain horn antennas for 300 GHz range: New ‘narrow’ -vs- old ‘wide’ type

Terasense is happy to present a little  novelty meant to make scientific lives of our customers a bit better. As you may know we offer detachable THz horn antennas for each specifically  frequency band of sub-terahertz and low THz region, that are typically identified as 100GHz; 140GHz; 200GHz  300GHz and even 600GHz.

Up until now Our frequency 300GHz range was represented by a detachable diagonal horn antenna  with a relatively short output mouth (which we also call ‘wide’).  It is now represented at our web-site as a Medium-gain horn detachable diagonal horn antenna for 300GHz range and have the following specs:

Medium-gain horn
Frequency range: available with ~ 280 GHz – 290 GHz sources
Beam shape: Gaussian
Divergence angle: ±11.5 degrees (H-plane), ±9 degrees (E-plane)
Gain: 19 dB
Mounting option: attached to WR-3.4 output flange
Weight: 0.010 kg (0.023 lbs)
                                            Size: 17 x 19 mm (0.65’’ x 0.75’’ in)

However, recently we added to our product line another type of detachable diagonal horn antenna for 300GHz frequency range with a bit longer output mouth, and, accordingly a bit different characteristics. The radiation pattern from our CW terahertz IMPATT based wave source sources with this horn has the same Gaussian beam shape, but the typical angles measured from the axis (at half power) are a bit different.  We called this new horn a ‘narrow’ type, and it produces a smaller beam spot indeed and considerably enhances the beam being generated by our wave source. This in its turn ensures a bit more homogeneously concentrated beam profile detected by a THz  imaging system.

The characteristics of this new horn antenna are below

High-gain horn
Frequency range: available with ~ 280 GHz – 290 GHz sources
Beam shape: Gaussian
Divergence angle: ±6.5 degrees (H-plane), ±6 degrees (E-plane)
Gain: 24 dB
Mounting option: attached to WR-3.4 output flange
Weight: 0.020 kg (0.046 lbs)
Size: 43 x 19 mm (1.69’’ x 0.75’’ in)

Both types are good, but and are meant to satisfy a bit different needs & wants pursued by our research & scientific customers. Seeing is believing as people say, this is why to facilitate comparison between these two horn antennas we posted here a couple of charts showing the radiation spectra in E-planes and H-planes  for both of 300GHz   detachable high gain diagonal horn antennas.  We’ll let you judge for yourself , as a picture paints a thousand words.We hope the addition of this new product will enable us  to cover a broader spectrum of  our customers’ needs, especially those that can be  satisfied by supplying our terahertz wave sources with horn antennas.

In configuration with horn antennas our THz sources are used to ‘couple’ radiation to free space (free space impedance). Such horn antennas considerably enhance THz beam generated by IMPATT diode and improve their stability.