NON-REFLECTING BRANCHING FILTER 95 



discrimination needed is only that required to prevent a significant energy loss 

 in the channel bands. If crosstalk considerations indicate that more r-f dis- 

 crimination is required, this can be obtained by placing auxiliary filters in the 

 branch arms. This can be done without complication since the branching 

 filter is a constant resistance device. 



The delay distortion was examined but was found to be less than the errors 

 of measurement, i.e. 2 millimicroseconds. 



Acknowledgements 



The authors, in carrying out the work described in this paper, have been 

 helped by discussions with many people. Particular credit is due to J. R. 

 Pierce for a variety of stimulating suggestions, and to their colleagues at the 

 Holmdel Radio Laboratory for much fundamental work on microwave trans- 

 mission. 



