Phase shifters

Van Keuls, F.W, R.R Romanofsky, C.H Mueller, J.D Warner, C.L Canedy, Ramamoorthy Ramesh, and F.A Miranda. "Current status of thin film (Ba,Sr)TiO3 tunable microwave components for RF communications." Integrated Ferroelectrics. Vol. 34. 2001. 1605/165–1616/176.

Mueller, C.H, F.W Van Keuls, R.R Romanofsky, F.A Miranda, J.D Warner, C.L Canedy, and Ramamoorthy Ramesh. "Characterization of (Ba0.5Sr0.5)TiO3 thin films for Ku-band phase shifters." Integrated Ferroelectrics 28 (2000) 139–149.

Van Keuls, F.W, C.H Mueller, F.A Miranda, R.R Romanofsky, C.L Canedy, S Aggarwal, T Venkatesan, Ramamoorthy Ramesh, J.S Horwitz, W L Chang, and W.J Kim. "Room temperature thin film BaxSr1-xTiO3 Ku-band coupled microstrip phase shifters: effects of film thickness, doping, annealing and substrate choice." IEEE MTT-S International Microwave Symposium Digest. Vol. 2. IEEE, Piscataway, NJ, United States, 1999. 737–740.

Van Keuls, F.W, R.R Romanofsky, N.D Varaljay, F.A Miranda, C.L Canedy, S Aggarwal, T Venkatesan, and Ramamoorthy Ramesh. "A Ku-band gold/BaxSr1-xTiO3/LaAlO3 conductor/thin-film ferroelectric microstrip line phase shifter for room-temperature communications applications." Microwave and Optical Technology Letters 20 (1999) 53–56.