Linkhart, Douglas K. <br/><br/>
Microwave circulator design / 
Douglas K. Linkhart 
 - 2nd ed. 
 - Massachusetts :  Artech House,  2014 
 - viii, 198 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical record and index 
<br/><br/><label>ISBN: </label>9781608075836 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Circulators<br/>Wave-guide--Design and construction