Title : 
50mm diameter TE01 mode helical waveguide optimisation
         
        
        
            Author_Institution : 
Post Office Research Centre, Research Department, Ipswich, UK
         
        
        
        
        
        
        
            Abstract : 
Changes to the design of the UK Post Office long distance TE01 mode circular waveguide are described. A 250 m length of the new waveguide structure has been manufactured and assessed; its transmission performance in straight route sections has been improved and much lower loss in curved sections has been achieved.
         
        
            Keywords : 
circular waveguides; 50 mm diameter TE01 mode helical waveguide optimisation; circular waveguide; new waveguide structure; transmission performance;
         
        
        
            Journal_Title : 
Electronics Letters
         
        
        
        
        
            DOI : 
10.1049/el:19780094