Kathrein Antenna

[Admin 2580]

Antenna KATHREIN production are not only exceptional electrical characteristics. Special attention is paid to the mechanical characteristics of the antennas.

 

[Antonius 17]

Is this type of antenna body connected to the reflector?

[clanon 258]

YEP , those are Dipole Magneto Electric (MED) ,

the quarter wave at 90 degrees with reflector (supports) are Magnetic fields (0 volts half wave centers could be in touch with reflector) is were you usually put metal supports or screws bolts. etc (yagi)

and the "leaves" are electric field (HALF wave ... being feed in the middle a DIPOLE)

Moderate gain , 2 ports (mimo) 2 polarizations  WIDE BAND

As I understand it...

Edited September 30, 2021 by clanon

[clanon 258]

Electric and Magnetic fields are ALWAYS at 90 degrees per Maxwells equations ...(and nature)

What make it electric or magnetic is the field orientation Vertical or Horizontal and their LENGTH

[Antonius 17]

14 hours ago, clanon said:

Electric and Magnetic fields are ALWAYS at 90 degrees per Maxwells equations ...(and nature)

What make it electric or magnetic is the field orientation Vertical or Horizontal and their LENGTH

Thank you very much Clanon

[Shabra 23]

A part of ex BTS(Base Transceiver Station) antenna.

[Shabra 23]

How to crimp this junction?

I've not found tutorial of making this joint.

[Admin 2580]

...it is not crimping, it is soldering by tinning...!!!

[alhaba.production 7]

any suggestion of reflector design? i need small size  for mobile usage 

 

[clanon 258]

Any FLAT plate  are would do...the bigger the BETTER.

[alhaba.production 7]

On 11/5/2021 at 9:34 PM, clanon said:

Any FLAT plate  are would do...the bigger the BETTER.

thanks brother

[clanon 258]

if you want more GAIN , new shape and area should be SIMULATED to see it doesn't harm the original specs...VSWR , Impedance , diagram (lobes) bandwidth ,etc

Flat area plates are the safest to use

 

[Antonius 17]

This is how I connected these two wires with solder.