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

[brmadhukar]

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

 

[boy]

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.

 

[caocao]

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!

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.

 

[STD]

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.

 

[seqc1712]

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

 

[MSH]

Re: WideBand Antenna/LNA

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

 

[filtersir]

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.

 

[gregb3d]

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.

 

[KMPA]

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

 

[springf2000]

Re: WideBand Antenna/LNA

The TEM horn can provide the bandwith you wanted