PCB Log Periodic Antenna

[Bob Morris]

I need a log periodic broadband antenna covering the 700MHz to 4 or
6GHz range for ambient field measurements. They are several hundred
dollars from test equipment suppliers. But, with due respect, there
doesn't seem to be that much to them, in terms of construction.

http://www.spectran.com/HyperLOG7000_en.shtml

Has anyone by chance seen a low cost PCB version of these for sale? If
not, is one feasible, say using an applet like the one below to design
the segments?

http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=16289

Bob Morris

 

[Uwe Hercksen]

I need a log periodic broadband antenna covering the 700MHz to 4 or
6GHz range for ambient field measurements. They are several hundred
dollars from test equipment suppliers. But, with due respect, there
doesn't seem to be that much to them, in terms of construction.

http://www.spectran.com/HyperLOG7000_en.shtml

Has anyone by chance seen a low cost PCB version of these for sale? If
not, is one feasible, say using an applet like the one below to design
the segments?

http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=16289

Hello,

the normally used PCB material FR4 will be not suitable for frequencies
of several GHz, you should use a special HF PCB material.

Bye

 

[[email protected]]

I need a log periodic broadband antenna covering the 700MHz to 4 or
6GHz range for ambient field measurements. They are several hundred
dollars from test equipment suppliers. But, with due respect, there
doesn't seem to be that much to them, in terms of construction.

http://www.spectran.com/HyperLOG7000_en.shtml

The cost isn't in the production, rather the design and calibration. That has
to be made up on a fairly small quantity sold, so...

 

[Malcolm Faed]

Hi Bob,
Try http://winradio.com/home/antennas.htm
Regards,
Mal.

"Bob Morris" wrote in message
I need a log periodic broadband antenna covering the 700MHz to 4 or
6GHz range for ambient field measurements. They are several hundred
dollars from test equipment suppliers. But, with due respect, there
doesn't seem to be that much to them, in terms of construction.

http://www.spectran.com/HyperLOG7000_en.shtml

Has anyone by chance seen a low cost PCB version of these for sale? If
not, is one feasible, say using an applet like the one below to design
the segments?

http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=16289

Bob Morris

 

[Nico Coesel]

Hello,

the normally used PCB material FR4 will be not suitable for frequencies
of several GHz, you should use a special HF PCB material.

Even if the material is very thin?