Switching Between Impedance and Admittance

Question I started with

I used the RFDH Smith-chart notes to revisit using a 180-degree rotation to switch between z and y with a hand calculation and my own diagram.

Switching Between Impedance and Admittance — concept flow — I redrew the relationships before returning to the equations.

Connecting the concepts

The key is using a 180-degree rotation to switch between z and y. Before reading coordinates I record Z0, frequency, and impedance/admittance mode, then label each element or line-length move.

Smith chart
normalized impedance
reflection coefficient
matching

Equations and assumptions

I write the reference impedance, units, and linear-versus-decibel domain before substituting numbers.

y = 1/zGamma_y = -Gamma_z

Worked example

For z=0.5+j0.5, y=1−j1.

Switching Between Impedance and Admittance — calculation relationship — This is my explanatory redraw, not an imported RFDH figure or a measurement result.

Connecting it to my coursework and projects

I use this order when reading my stored L-section and single-stub screens. The trajectory is an archived simulation view, not a current rerun.

High-frequency engineering course hub

What I will check next

Visual chart readings may differ slightly from calculated values. A matching answer is incomplete without normalization, wavelength direction, and open/short-stub type.