Saturday, May 11, 2019

Another transmission line option????

Using paper dielectric 1/4" thick and a number 14 wire may be worth a try?

micro strip transmission line used in Z matching????

The sim is mapping the transmission line Z.

This could be any insulator separating a strip of foil from a ground plane. I will be using a 1" strip 1/8" and 1/4" wide.

The glass could be a microscope slide or a glass from a picture frame or a window pane. The paper could be the back of a picture frame or a piece of press board. A single sided circuit board might be good. The problem is the thickness of the insulator and the width of the foil.

An example circuit that could use a couple of transmission lines.

Friday, May 3, 2019

Matching load to Rc

Food for thought, low current circuit with Rl set to match Rc.  This circuit would be easily overloaded as the sim shows.
Give and take. More current allows lower Z circuit. Lower current circuit produces higher voltage gain. Remember we have a DC circuit and an AC circuit. What if you bias the circuit for a high current and the use an inductor for the load? The slope of the DC load line would be "vertical" and the AC load line would have more slope. Just something to consider.