Title :
Microfluidically-tunedminiaturized planar microwave resonators
Author :
Saghati, Alireza Pourghorban ; Batra, Jaskirat ; Kameoka, Jun ; Entesari, Kamran
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
This paper presents two frequency tuning techniques, applied to planar microwave lumped LC and CPW resonators. Both methods are based on employing the reactive loading effect of a fluid metal placed on top of planar microwave circuits. The frequency tuning is achieved by moving the fluid metal inside the micro-channel and on top of different sections of each resonator. Realization of tunable resonators using common PCB technology and PDMS structure is demonstrated. The metal fluidic used is a non-toxic eutectic alloy of Gallium, Indium, and Tin known as Galinstan. Two implemented prototypes are measured and tuning ranges of 1.45-2.35 GHz and 2.8-3.9 GHz are achieved for lumped LC and CPW resonators, respectively.
Keywords :
LC circuits; circuit tuning; coplanar waveguides; eutectic alloys; lumped parameter networks; microchannel flow; micromechanical resonators; microwave integrated circuits; microwave resonators; polymers; printed circuits; Galinstan; PDMS structure; common PCB technology; fluid metal; frequency 1.45 GHz to 2.35 GHz; frequency 2.8 GHz to 3.9 GHz; frequency tuning techniques; microchannel; microfluidically tuned miniaturized planar microwave resonator; nontoxic eutectic alloy; planar microwave CPW resonators; planar microwave circuits; planar microwave lumped LC resonators; reactive loading effect; Capacitors; Coplanar waveguides; Liquids; Loading; Metals; Resonant frequency; Tuning; phase noise; substrate integrated waveguide (SIW); tunable resonator; voltage controlled oscillator;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual
Conference_Location :
Tampa, FL
DOI :
10.1109/WAMICON.2014.6857750
