Theoretical and experimental characterization of distributed analog phase shifter

This paper describes a theoretical study and experimental characterization of distributed phase shifter based on CPW line loaded by MACOM varactor diode. A circuit simulation combined with electro-magnetic simulation is presented and compared with measurement. In this work, we present also an impedance matching method allows adapting our phase shifter without additional circuit. The expression of phase shifting is obtained through the global ABCD matrix of proposed phase shifter circuit and compared with the measurement. The simulations are carried out on Matlab and ADS (Momentum) software's, a comparison between two simulations and measurement of fabricated phase shifter is made in order to validate the theoretical modeling and experimental characterization, good agreement is obtained.

[1]  M. Andrzejewski.  Digital microwave phase shifters with integrated switches , 1998, 12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195).

[2]  M. Mabrouk,et al.  Analytical study and simulation of distributed phase shifter , 2010, 18-th INTERNATIONAL CONFERENCE ON MICROWAVES, RADAR AND WIRELESS COMMUNICATIONS.

[3]  Gabriel M. Rebeiz,et al.  Low-loss cascadable MEMS distributed X-band phase shifters , 2000, IEEE Microwave and Guided Wave Letters.

[4]  Philippe Ferrari,et al.  Tapered distributed analogue tunable phase shifter with low insertion and return loss , 2005 .

[5]  Robert A. York,et al.  Distributed analog phase shifters with low insertion loss , 1999 .