ELECTRICAL WAVE FILTERS EMPLOYING CRYSTALS 227 



FILTER 

 NO 





FREQUENCY 00 



FREpUENCY 



/^ 



AJ. 



'\L 



Jal 



r 



JUM 



^^ 



/%L 



^ 



^,. 



M 



^»^ 



A 



k- 



NOTE - IN COLUMN D, DOTTED LINES INDICATE REACTIVE IMPEDANCE 

 SOLID LINES INDICATE RESISTIVE IMPEDANCE 



Fig. 4 — Single band lattice filters employing a crystal and coil in parallel in one arm. 



