Fluidics in Microwave Components

Thanks to the efforts of various research groups over the past decade in the area of tunable microwave passive components, the idea of tunability has become very well established within the RF/microwave community [1]-[5]. Many different designs have shown that tunable microwave components can improve the performance of a radio system in many ways. The tunability of microwave components has been realized using semiconductor devices (such as varactors or p-i-n diodes) and microelectromechanical systems (MEMS) devices. While these offer many advantages, such as high-quality factor and high-bandwidth operation (mainly for MEMS devices) and fast switching speeds (mainly for varactors and p-i-n diodes), they come with two major drawbacks.

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[48]  Kamran Entesari,et al.  A Microfluidically Reconfigurable Dual-Band Slot Antenna With a Frequency Coverage Ratio of 3:1 , 2016, IEEE Antennas and Wireless Propagation Letters.

[49]  Wenjing Su,et al.  Development of Low Cost, Wireless, Inkjet Printed Microfluidic RF Systems and Devices for Sensing or Tunable Electronics , 2015, IEEE Sensors Journal.

[50]  Wenqi Hu,et al.  A tunable low-pass filter using a liquid-metal reconfigurable periodic defected ground structure , 2012, 2012 IEEE/MTT-S International Microwave Symposium Digest.

[51]  Yasin Damgaci,et al.  A frequency reconfigurable antenna based on digital microfluidics. , 2013, Lab on a chip.

[52]  Rhonda R. Franklin,et al.  Independently Tunable Annular Slot Antenna Resonant Frequencies Using Fluids , 2014, IEEE Antennas and Wireless Propagation Letters.

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[58]  Zhigang Wu,et al.  A tunable spherical cap microfluidic electrically small antenna. , 2013, Small.

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[60]  Sheng-Fuh Chang,et al.  Packaged Tunable Combline Bandpass Filters , 2015, IEEE Microwave Magazine.

[61]  Y. Rahmat-Samii,et al.  Magnetic MEMS reconfigurable frequency-selective surfaces , 2006, Journal of Microelectromechanical Systems.

[62]  G. Mumcu,et al.  Highly reconfigurable bandpass filters using microfluidically controlled metallized glass plates , 2014, 2014 IEEE MTT-S International Microwave Symposium (IMS2014).

[63]  Ahmad Gheethan,et al.  Microfluidic enabled beam scanning focal plane arrays , 2013, 2013 IEEE Antennas and Propagation Society International Symposium (APSURSI).

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[66]  P. Sen,et al.  A Fast Liquid-Metal Droplet Microswitch Using EWOD-Driven Contact-Line Sliding , 2009, Journal of microelectromechanical systems.

[67]  Kamran Entesari,et al.  Microfluidically-tunedminiaturized planar microwave resonators , 2014, WAMICON 2014.

[68]  Seokho Yun,et al.  Tunable Frequency Selective Surfaces and Negative-Zero-Positive Index Metamaterials Based on Liquid Crystals , 2008, IEEE Transactions on Antennas and Propagation.

[69]  Chang-Jin Kim,et al.  A Liquid-Metal RF MEMS Switch with DC-to-40 GHz Performance , 2009, 2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems.

[70]  Raafat R. Mansour,et al.  High-Q Tunable Filters: Challenges and Potential , 2014, IEEE Microwave Magazine.

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[72]  Aaron T. Ohta,et al.  A Liquid-Metal Monopole Array With Tunable Frequency, Gain, and Beam Steering , 2013, IEEE Antennas and Wireless Propagation Letters.

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[75]  Kamran Entesari,et al.  A microfluidically-tuned dual-band slot antenna , 2014, 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).