Building and measuring Antenna Magus designs in the office

Just before I left for IEEE AP-S and IEEE MTT 2009 in the States, I asked the engineers whether they could build a few prototypes that I could take with me. This was the Friday afternoon before I left. I had ordered some basic raw materials like copper tape, 5mm signage boards (with an Er of approx 1), small metal ground planes and a few of SMA connectors.

We turned the boardroom table into a workbench with soldering irons, metal cutting scissors, tape and so forth. I?d not seen the engineers so excited since the previous Foosball tournament! Each could pick an antenna of his choice, design it with Antenna Magus, run the simulation, build it and then measure the impedance on the network analyser. Some of the antennas we used were the Circular pin-fed linearly polarised patch, Inverted-F (IFA), U-slot dual-band planar inverted-F, Elliptical rectangular monopole, Suspended plate antenna (cut-out version) and the Discone. I also invited the software team and a few others who had never built their own antennas before and they were ecstatic to see how their measurements matched the Antenna Magus results.

We had a lot of fun and unlike other Friday afternoons, no one wanted to go home for the weekend (or perhaps it took a bit longer for those with less experience in mechanical construction).

Here are pictures of two antennas we built and measured:

Discone antenna designed at 3GHz, S11 measurement.

Discone antenna designed at 3GHz, S11 measurement.

Suspended plate antenna designed at 2Ghz, S11 measurement.

Suspended plate antenna designed at 2Ghz, S11 measurement.

Author: Robert Kellerman


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2 Responses to “Building and measuring Antenna Magus designs in the office”

  1. Madhu says:

    wow no..the satellite anntena is a completely different signal than does not plug in to your fm anntena it plugs in to your xm receiver..the receiver then transmits the sound to an fm station in your car radio thru a wired fm modulator or wireless one which what most of them are now and they are pretty crappy..Where did you buy this xm radio and who helped you out>>they didn't really do a good job explaining how it works..I worked as an installer for 7 years at circuit do this stuff on the side..if you can't figure it out just stop at a best buy and try to talk to someone that has knowledge specially someone like an installer..Hope this can help you

  2. Good job says:

    Good post, keep

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