New switched-network phase shifter with broadband characteristics

A new switched-network broadband phase shifter is presented in this paper. The proposed unique network consists of a fixed main line of length lambda/2, and lambda/8 parallel open and short stubs, which are shunted at the edge points of the main line. It has a more dispersive phase property than a standard transmission line, and can control the phase slope by the optimum Z(m) and Z(s) values to produce an impedance match and minimum phase deviation at the desired phase shift. (C) 2003 Wiley Periodicals, Inc.