“Standard” gain horns are the customary way to make precision measurements, but they tend to make a poor reference against which to compare antenna performance, particularly for ultra-wideband (UWB) antennas. The ideal reference antenna for use with UWB systems is a linear phase antenna with increasing gain to approximate an ideal constant aperture. Then, the time domain voltage at the antenna terminals approximates the time domain electromagnetic field. That’s why I designed the Model 310C Horn antenna. This third revision of the design meets the following specifications:
- Frequency Range: Useable 2-10GHZ, Optimized for 3-10GHz
- Matching: better than 2:1 VSWR (f > 2.2GHz)
- Gain: +6dBi at 3GHz; +9dBi at 6GHz; approximately constant aperture
- Phase Response: Linear ± 20 deg
- Pattern: approximately 90deg x 90deg or narrower
A matched pair is available for $950 (plus shipping) – less than half the cost of other reference antennas with less suitable specs. Contact me at [email protected] to order. Here are further details:
The VSWR is better than 2:1 for frequencies above 2.2 GHz. Here are the VSWR and return loss from a matched pair measurement:
Here’s the gain from the same measurement:
