[Amps] high power dual directional coupler

[Denis Jackson]

I too would be very interested in any designs and / or practical
implementations that anyone can recommend.  I would like to be able to run
my current amplifier project in a different room, and want to incorporate
the ability to monitor power out, and SWR, remotely.  

 

73

 

Denis MW0CBC / GW8OQV

 

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Message Received: Jan 16 2014, 06:28 AM

From: "Geert PA3CSG" <pa3csg at hoeplakee.nl>

To: amps at contesting.com

Cc: 

 Subject: [Amps] high power dual directional coupler

 Hello!

 I am looking for a design of a directional coupler for HF, 1.8 to 30 MHz 

 or if possible 50 MHz.

Sofar I tried the original Bruene, that was not referenced to ground, 

 and a tandem coupler were I "smoked" the toroid after a while.

I tried to work one out in LT spice but I don't trust my spice skills ....

 Demands:

 Frequency range 1.8 - 30 MHz

Several Kw

Coupling in the range of 30dB or more

High directivity

Dual coupling to do Pwr / SWR measurements.

 A "how to design" or a complete design would be nice.

 Thank you!

 73 Geert PA3CSG