Roy Lewallen wrote:
It's for impedance matching. As usual, there are several ways it can be
done, each with its own advantages and disadvantages. That method is
probably the simplest for the particular application, but you have to
watch the flux density in the transformer primary if it's wound on a
ferrite core with no air gap (such as a toroid core) and make sure the
D.C. current won't cause core saturation. Other methods allow you to
separate the RF choke from the transformer, like in Fig. 16, so you can
optimize the RF choke for its job and the transformer for its job. Or
you can use several types of LC network to do the job.

Roy,

Thanks a lot for the comments. I hope to homebrew some of those early
projects in SSD and then move to bigger projects elsewhere, as I have
not much of hands-on experience in building.

Thanks
Ramakrishnan