First-order sensitivity of complementary diplexers

This paper provides sensitivity analysis of complementary diplexers which are used for dividing the frequency spectrum into two adjacent frequency bands. Analytical expressions of the semirelative first-order sensitivity of the transducer losses are derived. These sensitivity expressions indicate that the passband loss sensitivity of a complementary diplexer is substantially lower than that of doubly resistively terminated reactance networks which are known to have a low sensitivity. Numerical simulations are included, supporting the theoretical results.