Tunable Ferroelectric Ceramic Components for Reconfigurable Wireless Communications

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000455-000463
Author(s):  
Y. Zheng ◽  
M. Sazegar ◽  
H. Maune ◽  
J. R. Binder ◽  
X. Zhou ◽  
...  
Keyword(s):  
Insertion Loss ◽  
Sol Gel ◽  
Cognitive Radios ◽  
Ferroelectric Ceramic ◽  
Split Ring Resonator ◽  
Ferroelectric Materials ◽  
Ferroelectric Ceramics ◽  
Complementary Split Ring Resonator ◽  
Matching Networks ◽  
Agile Software

This paper focuses on the technology evolvement and novel concepts of ferroelectric microwave components. They aim to enable reconfigurable wireless frontends for frequency-agile, software-defined and cognitive radios. Such components are an emerging technology based on the nonlinear solid state ferroelectric materials like Barium-Strontium-Titanate namely BST thick-films. They are expected to cope with the demands of multiband and multi-standard operation. Processing and integration technologies are revised to enable multilayer component realization, including selective sol-gel printing and vertical connection through laser drilling. Several novel kernel frontend components based on ferroelectric thick-film ceramic are addressed then. The challenging trend of antennas towards compactness with wider spectrum coverage is coped with several tunable resonant modes in the antennas with integrated BST varactors. The optimized prototype for frequency division duplex services covers 1.47 GHz to 1.76 GHz with a variable distance between up- and down-link channels. The environmental impact on antennas can be compensated by tunable matching networks. In the commercial frequency range from 1.8 GHz to 2.1 GHz, a demonstrative module exhibits an insertion loss less than 0.98 dB, in a compact multilayer package. A compact bandpass filter is enabled by an evanescent mode substrate integrated waveguide cavity in ferroelectric ceramics, integrated with tunable complementary split ring resonator scatterers and tunable matching networks. The compact module covers 2.95 GHz to 3.57 GHz with a comparatively low insertion loss.

Design of Compact Highpass Filter for 5G mm-wave Applications Using Complementary Split Ring Resonator

Frequenz ◽  
2020 ◽  
Vol 74 (5-6) ◽  
pp. 177-181 ◽  
Author(s):  
Parthasarathy Ramanujam ◽  
P. G. Ramesh Venkatesan ◽  
Chandrasekar Arumugam ◽  
Manimaran Ponusamy
Keyword(s):  
Insertion Loss ◽  
Ring Resonator ◽  
Cutoff Frequency ◽  
Equivalent Circuit Model ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Left Hand ◽  
Complementary Split Ring Resonator ◽  
Wide Range ◽  
Highpass Filter

AbstractThis article presents a design of highpass filter (HPF) for millimeter-wave (mm-wave) applications using a square complementary split-ring resonator (SCSRR). A miniaturized size HPF filter is obtained by overlapping the Right-Hand (RH) and Left-Hand material. The arrangement of inter-digital parallel coupled capacitor and SCSRR offers low insertion loss, high selectivity with a sharp roll-off factor over a wide bandwidth of 15.9 GHz (from 34.1 to 50 GHz). Generally, SCSRR offers narrow passband/stopband however this prototype has a passband over a wide range of frequency. The proposed HPF has an appreciable agreement between simulated and fabricated results. Further, the filter is realized in the equivalent circuit model and their electrical elements functions are also discussed. This prototype has a cut-off frequency (fc) of 34.1 GHz with a maximum passband insertion loss of 1.45 dB. The fabricated area of the filter is 0.16λg × 0.09λg × λg and where λg is the guided wavelength at cutoff frequency fc.

scholarly journals Complementary Split-Ring Resonator for Microwave Heating of µL Volumes in Microwells in Continuous Microfluidics

Chemosensors ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 184
Author(s):  
Tomislav Markovic ◽  
Gertjan Maenhout ◽  
Matko Martinic ◽  
Bart Nauwelaers
Keyword(s):  
Microwave Heating ◽  
Ring Resonator ◽  
Casting Process ◽  
Split Ring Resonator ◽  
Sample Volume ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Microwave Dielectric ◽  
Electric Field Direction ◽  
Made In

This work presents the design and evaluation of a planar device for microwave heating of liquids in continuous microfluidics (CMF) made in polydimethylsiloxane (PDMS). It deals with volumes in the µL range, which are of high interest and relevance to biologists and chemists. The planar heater in this work is conceived around a complementary split-ring resonator (CSRR) topology that offers a desired electric field direction to—and interaction with—liquids in a microwell. The designed device on a 0.25 mm thick Rogers RO4350B substrate operates at around 2.5 GHz, while a CMF channel and a 2.45 µL microwell are manufactured in PDMS using the casting process. The evaluation of the performance of the designed heater is conducted using a fluorescent dye, Rhodamine B, dissolved in deionized water. Heating measurements are carried out using 1 W of power and the designed device achieves a temperature of 47 °C on a sample volume of 2.45 µL after 20 s of heating. Based on the achieved results, the CSRR topology has a large potential in microwave heating, in addition to the already demonstrated potential in microwave dielectric sensing, all proving the multifunctionality and reusability of single planar microwave-microfluidic devices.

Bi(Mg1/2Zr1/2)O3-PbZrO3-PbTiO3 relaxor ferroelectric ceramics with large and temperature-insensitive electric field induced strain response

2021 ◽  
Author(s):  
Hongrui Jia ◽  
Zhigang Liang ◽  
Zhen Li ◽  
Fei Li ◽  
Linghang Wang
Keyword(s):  
Electric Field ◽  
Ceramic Materials ◽  
Ferroelectric Ceramic ◽  
Relaxor Ferroelectric ◽  
Ferroelectric Ceramics ◽  
Harsh Environment ◽  
Strain Response ◽  
Practical Application ◽  
Electric Field Induced Strain ◽  
Relaxor Ferroelectric Ceramics

Ferroelectric ceramic materials with large and temperature-insensitive strain response are highly desired for the practical application of actuator in harsh environment conditions. In this work, a novel xBi(Mg1/2Zr1/2)O3-(0.55-x)PbZrO3-0.45PbTiO3 (xBMZ-PZ-0.45PT) ternary...

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