Is there a antenna/LNA with bandwidth from 80Mhz to 2GHz?

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brmadhukar

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WideBand Antenna/LNA

Hi,
Is there a possibility of having a antenna with Bandwidth from 80MHz to 2GHz. If it is available, a single antenna may be able to provide for may applications.
TIA
madhukar
 

Re: WideBand Antenna/LNA

a spiral antenna can have that kind of bandwidth. The spiral antennas have many form such as muti-arm. You may also try log-periodic antenna. it may work.
 

Re: WideBand Antenna/LNA

HI
Does a planar spiral antenna can have good character from 80MHz to 2GHz ?Could you introduce any documents on it ?
Thanks!
boy said:
a spiral antenna can have that kind of bandwidth. The spiral antennas have many form such as muti-arm. You may also try log-periodic antenna. it may work.
Click to expand...
 

There is an example of spiral antenna for windband use.It covers from 2G to 6G.It may useful for you.
You may look into the book,its name is somelike " the spiral and helix antenna".(I am not sure about it)
Good luck.
 

maybe a Vivaldi slot antenna has this bandwidth. What about antenna gain?
 

Re: WideBand Antenna/LNA

I think that best choice for this rang of frequency(80MHz-2GHz) is Log Periodic antenna.What about your idea?
 

Re: WideBand Antenna/LNA

I think an Archimedes sprial antemma is a good choice.Its structure is more simple than the logarithmic period antenna's.



Best regard.
 

Re: WideBand Antenna/LNA

Hi,

What type of polarization do you need? Spiral antennas are very broad band but they have circular polarization. Most applications use linear polarization and I think vivaldi antennas have the best bandwidth in this case.
 

Re: WideBand Antenna/LNA

Hi to all,
some notes:
1- Vivaldi antennas have a BIG dimension in low frequency, and its pattern, limit frequency bandwidth to 4:1.
2- Spiral antennas without any loading, have dimention about Lambda/4.
3- Log-Periodic antennas have dimension similar Spiral, but can design to be dual linear polarized.
I designed spiral and LogPer with 9:1 frequency bandwidth.( 2-18GHz)

KMPA
 

Re: WideBand Antenna/LNA

The TEM horn can provide the bandwith you wanted
 

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