On utilizing the half-sections of a minimum inductor image-parameter band-pass filter as suggested by C. C. Koraн

the formation of a composite filter requires such processes as equivalent network transformations and impedance-level transformations.Owing to the relatively complicated form of the coefficients of network elements

calculations usually turn out to be laborious. In this paper steps are considered with the aim of simplifying the overall computations.The paper starts with a discussion of some of the relevant equivalent circuits

and after introducing the symmetrical relationship of the theoretical cut-off frequencies x1 and X2 together with the expression of definition of the parameter n

succeeds in establishing certain typical composite sections with compact expressions of normalized element coefficients

as shown in Table 2

by mears of which it is easier to obtain a composite filter with a minimum inductor. Examples are given at the end of the paper to illustrate the steps involved.