Title :
Compact tunable phase shifter based on inkjet printed BST thick-films for phased-array application
Author :
Nikfalazar, Mohammad ; Sazegar, M. ; Zheng, Yu ; Wiens, Andrew ; Jakoby, Rolf ; Friederich, Andreas ; Kohler, Christoph ; Binder, Joachim R.
Author_Institution :
Inst. for Microwave Eng. & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
This paper presents a tunable left-handed microstrip phase shifter based on inkjet printed ferroelectric material Barium-Strontium-Titanate (BST). Inkjet printing is a low-cost technology for selective film fabrication and has a high potential for planar phased-arrays. The BST thick-film is printed at the areas, where interdigital capacitors are later patterned. The demonstrative left-handed phase shifter covers the 360° phase shift, with a figure of merit (FoM) of 38°/dB at 12GHz. The size of the planar circuit is 4mm × 6mm.
Keywords :
antenna phased arrays; barium compounds; ferroelectric materials; ink jet printing; phase shifters; planar antenna arrays; strontium compounds; thick films; figure of merit; film fabrication; frequency 12 GHz; inkjet printed ferroelectric material; inkjet printed thick-films; inkjet printing; interdigital capacitors; left-handed phase shifter; planar phased-arrays; size 4 mm; size 6 mm; tunable left-handed microstrip phase shifter; tunable phase shifter; Fabrication; Microwave antenna arrays; Microwave circuits; Phase shifters; Phased arrays; Printing; Barium-Strontium-Titanate (BST); ferroelectric devices; phase shifter; phased-arrays;
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
