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Triple Feed Patch antenna by Maarten Baert

Triple Feed Patch antenna by Maarten Baert

Part Number:4234
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5
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5
On sale $11.99
Retail Price:$14.99
Your Savings:$3.00(20%)
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Description

The Triple Feed Patch antenna is a directional circularly polarized antenna that I created in collaboration with Robin Theunis, one of my co-workers. The main design goals were:

  • Good radiation efficiency. Most FR4-based patches have terrible efficiency because FR4 is very lossy at 5.8 GHz.

  • Good axial ratio, not just directly perpendicular to the patch but also off-center.

  • Cheap and easy to manufacture with high accuracy, even for a hobbyist.

Specifications

  • Center frequency: 5.8 GHz

  • Bandwidth: 660 MHz (5.47 – 6.13 GHz)

  • Matching: S11 < -20 dB, VSWR < 1.22 (at center frequency)

  • Axial ratio: < 1.3

  • Antenna gain: 9.4 dBi

  • Half power beam width: 55° (horizontal and vertical)

  • Radiation efficiency: 83.5%

These values are based on simulation, actual measurements are below (they are very similar). The center frequency may shift a bit between batches as a result of variations in the dielectric constant of FR4. Also, not all brands of FR4 have the same dielectric constant. Frequency shifts up to 100 MHz are normal.

Package includes:
1 x Antenna
1 x semi rigid SMA extension
1 x Dummy Load SMA 

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Customer Reviews

5 Stars
Happy
Performance is good, range is a little better than the TBS patch it replaces. While it does the job of not needing to carry two patches around, it’s just as much work to switch over.
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from Canada. on 10/7/2017
5
5 Stars
love it
amazing quality
Did you find this helpful? 
Reviewed by: (Verified Buyer)  from CARSON CITY. on 6/23/2018
5

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