 The building block of constant k filters is the half @-@ section " L " network , composed of a series impedance Z , and a shunt admittance Y. The " k " in " constant k " is the value given by , 
 The building block of constant k filters <a href='drop_aux' title='1'><mark>is</mark></a>the half @-@ section " L " network , composed of a series impedance Z , and a shunt admittance Y. The " k " in " constant k " <a href='drop_aux' title='2'><mark>is</mark></a>the value given by , 
The building block of constant k filters the half @-@ section " L " network , composed of a series impedance Z , and a shunt admittance Y. da " k " in " constant k " tdavalue given by ,