Therefore, according to the known expressions of the characteristic admittances of the TM modes, we have:
2.
"L " and " C " are conventionally the symbols for inductance and capacitance, but here they represent respectively the characteristic impedance of an inductive stub and the characteristic admittance of a capacitive stub.
3.
Where 1 _ { \ ! N } is the identity matrix, \ sqrt { y } is a diagonal matrix having the square root of the characteristic admittance ( the reciprocal of the characteristic impedance ) at each port as its non-zero elements,
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