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So, a bit of background, I have designed and measured some antennas in college so I have a decent theoretical grasp of the subject, but they were optimized for a narrow band usage and certain frequency.

I am now doing my own home project which would include an internal antenna that is supposed to be ultra wide band (from 30 MHz to 3 GHz) done on a PCB. Online resources are scarce and I do not know how to get started so that it haves any semblance of an actual antenna.

What I am actually looking for is any tips and tricks for a person who already has some understanding of a more "typical" antenna designs, I am comfortable with sacraficing efficiency for more bandwidth. If you could recommend me any literature witch discusses UWB internal antenna design, it would be much appreciated.

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  • \$\begingroup\$ Is this a directional antenna that you want to build? In that case I would go with a LOGPER type of construction. \$\endgroup\$
    – Stefan Wyss
    Mar 23, 2021 at 9:20
  • \$\begingroup\$ @StefanWyss I was considering it, but I have doubts if the antenna can be ponting at the right direction all the time, I would consider building both omnidirectional and directional variants and test them both. \$\endgroup\$
    – Jakov Sergo
    Mar 23, 2021 at 10:00
  • \$\begingroup\$ I have never seen an omnidirectional antenna with such a high bandwidth. Good luck. \$\endgroup\$
    – Stefan Wyss
    Mar 23, 2021 at 11:05
  • \$\begingroup\$ Have you searched in Google for "uwb antennas" and then pressed the Images tab? I then see MANY examples of UWB antennas with strange and interesting patterns. It is unclear though what the actual bandwidth of there antennas is though. \$\endgroup\$
    – Bimpelrekkie
    Mar 23, 2021 at 11:13
  • \$\begingroup\$ Why do you want an antenna to cover such a wide frequency range? What's the application? \$\endgroup\$
    – Chu
    Mar 23, 2021 at 13:59

1 Answer 1

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I know this is not a good answer. But once the internal antena of my cell phone broken, so it showed no signal. I did cut a same size stip from a copper plate and soldered. I got full signal strenth. It was about 2 cm. I think you can start from a cell phone to experiment at GHz range because it will show the signal strenth. I dont talk about wave equation , because you said that you know all that. Good luck!! enter image description here

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    \$\begingroup\$ Such an antenna as you have drawn is for a relatively narrow frequency range. The question is about how to make an antenna that covers a very large range. Specifically, from 30 MHz to 3 GHz. Your cell phone sqiuggle covers only a tiny fraction of the required range. \$\endgroup\$
    – JRE
    Mar 23, 2021 at 10:31
  • \$\begingroup\$ @upali this is a meander antenna and its designed to be a narrow band antenna, so it doesnt quite fit my design requirements. \$\endgroup\$
    – Jakov Sergo
    Mar 23, 2021 at 10:46
  • \$\begingroup\$ Thank you JRE. You are correct. But every antenna has a resonance frequency regarding to ti's length. Some one else may give a good answer. But if there is a method, already it should be in the market. \$\endgroup\$
    – upali
    Mar 23, 2021 at 10:47
  • \$\begingroup\$ Ok Jakov. Wait untill some one answer. \$\endgroup\$
    – upali
    Mar 23, 2021 at 10:48

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