Jing Wang

Prof. Dr. Jing Wang

Department of Electrical Engineering, University of South Florida, 4202 East Fowler Avenue, ENB118 Tampa, FL 33620, USA
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Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2004 in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Verified
Journal Article
Closed access
JWJing Wang
Jing Wang
ZRZ. Ren
Z. Ren
CNC.T.-C. Nguyen
C.T.-C. Nguyen
A new fabrication methodology that allows self-alignment of a micromechanical structure to its anchor(s) has been used to achieve vibrating radial-contour mode polysilicon micromechanical disk resonators with resonance frequencies up to 1.156 GHz and measured Q's at this frequency >2,650 in both vacuum and air. In addition, a 734.6-MHz version has been demonstrated with Q's of 7,890 and 5,160 in vacuum and air, respectively. For these resonators, self-alignment of the stem to exactly the center of the disk it supports allows balancing of the resonator far superior to that achieved by previous versions (in which separate masks were used to define the disk and stem), allowing the present devices to retain high Q while achieving frequencies in the gigahertz range for the first time. In addition to providing details on the fabrication process, testing techniques, and experimental results, this paper formulates an equivalent electrical circuit model that accurately predicts the performance of these disk resonators.
1 November 2013 in Journal of Power Sources
Verified
Journal Article
Closed access
TTTete Tevi
Tete Tevi
HYHouman Yaghoubi
Houman Yaghoubi
JWJing Wang
Jing Wang
ATArash Takshi
Arash Takshi
2 August 2004
Verified
Conference Paper
Closed access
JWJing Wang
Jing Wang
JBJ.E. Butler
J.E. Butler
TFT. Feygelson
T. Feygelson
CNC.T.-C. Nguyen
C.T.-C. Nguyen
The first CVD nanocrystalline diamond micromechanical disk resonator with material-mismatched stem has been demonstrated at a record frequency of 1.51 GHz with an impressive Q of 11,555, which is more than 7X higher than demonstrated in a previous 1.14-GHz polysilicon disk resonator, and which achieves a frequency-Q product of 1.74×1013 that now exceeds the 1×1013 of some of the best quartz crystals. In addition, a 1.27-GHz version with a Q in the excess of 12,000 exhibits a measured motional resistance of only 100 kΩ with a dc-bias voltage of 20 V, which is more than 34X lower than measured on a pure polysilicon counterpart at 1.14 GHz. At 498 MHz, Q's up to 55,300 in vacuum and 35,550 in air have been demonstrated, both of which set frequency-Q product records at 2.75×1013 (vacuum) and 1.77×1013 (air).
14 February 2017 in IEEE Transactions on Microwave Theory and Techniques
Verified
Journal Article
Open access
JCJuan D. Castro
Juan D. Castro
EREduardo A. Rojas-Nastrucci
Eduardo A. Rojas-Nastrucci
ARAnthony Ross
Anthony Ross
TWThomas M. Weller
Thomas M. Weller
JWJing Wang
Jing Wang
A new kind of high permittivity (high-k) and low-loss composite material for fused deposition modeling (FDM) technology based on a cyclo-olefin polymer (COP) thermoplastic matrix embedded with sintered ceramic fillers was developed and characterized up to Ku-band. FDM printed samples made of 30 vol.% COP-MgCaTiO 2 composites, with filler particles sintered at 1200°C, show a relative permittivity (ε r ) of 4.82 and a loss tangent (tan δ) below 0.0018. Meanwhile, 3-D-printed samples composed of 25 vol.% COP-Ba 0.55 Sr 0.45 TiO 3 with particles sintered at 1340°C exhibit a ε r of 4.92 and a tan δ lower than 0.0114. Also, 30 vol.% COP-TiO 2 specimens with filler particles sintered at 1200°C exhibit a ε r of 4.78 and a low tan δ lower than 0.0012, whereas acrylonitrile butadiene styrene-Ba 0.55 Sr 0.45 TiO 3 specimens with a 6% volume fraction loading of microparticle fillers sintered at 1340°C have demonstrated a ε r of 3.98 and a tan δ less than 0.0086. Edge-fed microstrip patch antennas operating at 17 GHz were fabricated by a direct digital manufacturing (DDM) approach that combines FDM of electromagnetic composites and microdispensing for deposition of conductive traces and compared with reference designs implemented using commercial microwave laminates regarding antenna size and performance. Evidently, the newly developed ceramic-thermoplastic composites are well suited for microwave device applications up to Ku-band and can be adapted to 3-D printing technologies.
13 February 2017 in Proceedings of the IEEE
Verified
Journal Article
Open access
KCKenneth H. Church
Kenneth H. Church
NCNathan B. Crane
Nathan B. Crane
PDPaul I. Deffenbaugh
Paul I. Deffenbaugh
TKThomas P. Ketterl
Thomas P. Ketterl
CNClayton G. Neff
Clayton G. Neff
TWThomas M. Weller
Thomas M. Weller
Direct digital manufacturing (DDM) is an emerging technology that is finding its place across a wide array of industries and applications as a cost-effective solution for low volume and mass customizable production. This technology encompasses a class of digital manufacturing techniques which can be combined to enable multimaterial fabrication and postprocessing. One of the promising applications for DDM is structural electronics, where lightweight printed plastics provide mechanical support as a fixture, package, or structural member and also host the electrical interconnects and devices, all in a contiguous fashion. Microwave structural electronics is a specific class of such systems for which the printing resolution as well as electrical and surface properties of the materials are especially important. This paper presents the current state of DDM technology, fundamental research into the electrical and mechanical properties of as-printed structures, and novel 3-D printed structures operating from C-band through Ku-band.
7 October 2010 in Langmuir
Verified
Journal Article
Closed access
OOOphir Ortiz
Ophir Ortiz
AVAjay Vidyasagar
Ajay Vidyasagar
JWJing Wang
Jing Wang
RTRyan Toomey
Ryan Toomey