Broadband switched-bit phase shifter using all-pass networks

A method of broadband phase shifting utilizing an unbalanced all-pass network topology has been developed. By taking advantage of the intrinsically matched characteristics of these networks, it is shown that multioctave response can be achieved by cascading of two or more similar networks. Utilizing this approach, an octave-band 4-b phase shifter has been realized. It has less than 18 degrees total phase error and better than -30 dBc carrier suppression when operated as a frequency translator.<<ETX>>

[1]  Sidney Darlington.  Realization of a constant phase difference , 1950 .

[2]  M. J. Schindler,et al.  A 3 bit K/Ka band MMIC phase shifter , 1988, IEEE 1988 Microwave and Millimeter-Wave Monolithic Circuits Symposium. Digest of Papers..

[3]  R. Pyndiah,et al.  A 10-14 GHz linear MMIC vector modulator with less than 0.1 dB and 0.8 degrees amplitude and phase error , 1990, IEEE Symposium on Microwave and Millimeter-Wave Monolithic Circuits.

[4]  M. V. Valkenburg.  Network Analysis , 1964 .

[5]  F. L. Opp,et al.  Design of Digital Loaded-Line Phase-Shift Networks for Microwave Thin-Film Applications , 1968 .

[6]  J. Reed,et al.  A Method of Analysis of Symmetrical Four-Port Networks , 1956 .