Now Available from Amazon: UWB Planar Horn Antenna

 Posted by Hans at 05:12  No Responses »
Nov 302011
 


Next-RF’s Model 310C UWB Planar Horn Antenna is now available from Amazon. This ultra-wideband (UWB) antenna approximates a constant aperture. Thus, the time domain voltage signal closely approximates the time domain behavior of the incident fields themselves. In addition to use as a UWB impulse antenna, this antenna provides a low cost alternative to ridged horns and other EMC or spectrum analysis antennas. Additional details on the performance of the Model 310C UWB Planar Horn Antenna are available in a previous blog post. Many thanks to the Czarina for including this UWB offering in her line of children’s feeding products.

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Time Domain Releases PulsON® 400 MRM Coherent UWB Radar Module

 Posted by Hans at 05:12  No Responses »
Nov 222011
 

Time Domain PulsON 400 MRM Coherent UWB Radar Module with Broadspec Dipole Antenna. Source: Time Domain

Time Domain has released a compact (3″ x 4″) UWB radar module with 1.4GHz bandwidth at a 4.3GHz center frequency.  From their website:

Time Domain’s PulsON® 400 (P400) Monostatic Radar Module (MRM) is a fully coherent, short-range radar that packs 1.4 GHz of RF bandwidth in a small, low cost, low power OEM module. The P400 MRM achieves the RF bandwidth normally associated with 10 and 20 GHz systems but at a fraction of the cost. This bandwidth provides the resolution required to achieve clutter rejection for operation inside buildings and in other complex environments. Operating at a low center frequency of only 4.3 GHz, the MRM also enjoys much better propagation characteristics. All together this gives the MRM the most RF bandwidth and the lowest possible center frequency.

The unit comes with a pair of Broadspec UWB antennas.  Elsewhere, I described the genesis of this UWB dipole antenna. The 310C Planar Horn Antenna provides a directional alternative to the omni-direction behavior of the Broadspec antennas.

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Introducing the 310C UWB Horn Antenna

 Posted by Hans at 05:12  No Responses »
Jun 272011
 

Next-RF's 310C UWB Horn Antennas are a compact, low-cost, high-performance alternative to standard gain horns.

“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 h.schantz@ieee.org to order. Here are further details:

Continue reading »

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