3 db coupler

Does anybody know where to find the following article:

Tandem Couplers and phase shifters for multi octave bandwidth

Shelton R., Wolf J and van Wagoner R.

Microwavesa April 1965


My second question is about the cross over for a tandem coupler. Do you have to include for calculating the required odd and even impedance?
It looks quite difficult.....

I need this article too.
someone please help.

Hello together,

may be somebody can tell us what type of magazine it is.
There are a more than one interesting articles, but I dont know any magazine called "Microwaves".

elektr0