scholarly journals A SIZE-REDUCED, BROADBAND, BIDIRECTIONAL, CIRCULARLY POLARIZED ANTENNA FOR POTENTIAL APPLICATION IN WLAN, WIMAX, 4G, AND 5G FREQUENCY BANDS

2021 ◽  
Vol 114 ◽  
pp. 1-11
Author(s):  
Mason Moore ◽  
Zabed Iqbal ◽  
Sungkyun Lim
Keyword(s):  
Potential Application ◽  
Circularly Polarized ◽  
Frequency Bands

scholarly journals Design of Circularly Polarized Triple-Band Wearable Textile Antenna with Safe Low SAR for Human Health

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1366 ◽  
Author(s):  
Ashok Yadav ◽  
Vinod Kumar Singh ◽  
Pranay Yadav ◽  
Amit Kumar Beliya ◽  
Akash Kumar Bhoi ◽  
...  
Keyword(s):  
Microstrip Line ◽  
Radiation Effect ◽  
Axial Ratio ◽  
Antenna Design ◽  
Circularly Polarized ◽  
Frequency Bands ◽  
Textile Antenna ◽  
Peak Gain ◽  
Triple Band ◽  
Ku Band

In this manuscript, an antenna on textile (jeans) substrate is presented for the WLAN, C band and X/Ku band. This is a wearable textile antenna, which was formed on jeans fabric substrate to reduce surface-wave losses. The proposed antenna design consists of a patch and a defected ground. To energize the wearable textile antenna, a microstrip line feed technique is used in the design. The impedance band width of 23.37% (3.4–4.3 GHz), 56.48% (4.7–8.4 GHz) and 31.14% (10.3–14.1 GHz) frequency bands are observed, respectively. The axial ratio bandwidth (ARBW) of 10.10% (4.7–5.2 GHz), 4.95% (5.9–6.2 GHz) and 10.44% (11.8–13.1 GHz) frequency bands are observed, respectively. A peak gain of 4.85 dBi is analyzed at 4.1-GHz frequency during the measurement. The SAR value was calculated to observe the radiation effect and it was found that its utmost SAR value is 1.8418 W/kg and 1.919 W/kg at 5.2/5.5-GHz frequencies, which is less than 2 W/kg of 10 gm tissue. The parametric study is performed for the validation of the proper functioning of the antenna.

scholarly journals A Dual-Band Circularly Polarized Patch Array Antenna for Phase-Only Beam Shaping with Element Rotation

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 643
Author(s):  
Edoardo Pelliccia ◽  
Roberto Vincenti Gatti ◽  
Piero Angeletti ◽  
Giovanni Toso
Keyword(s):  
Phase Distribution ◽  
Synthesis Method ◽  
Satellite System ◽  
Beam Shaping ◽  
Dual Band ◽  
Circularly Polarized ◽  
Frequency Bands ◽  
Radiating Element ◽  
Effective Phase ◽  
Global Navigation Satellite

In this paper, an innovative patch antenna optimally designed for phase-only beam shaping is presented. The radiating element generates a circularly polarized field and exhibits two separate operative frequency bands. The element is center-fed by a pin connected to the beam forming network (BFN) layer. This unique feature allows us to generate any given phase distribution by simply proportionally rotating the radiating elements with respect to their feeding points. An effective phase-only synthesis method is also illustrated, which takes into account the radiating element rotations. To demonstrate the effectiveness of the proposed solution, two linear arrays for global coverage have been designed, specifically operating in the E1 and E6 frequency bands of the European Global Navigation Satellite System (GNSS) Galileo. The two presented antennas performance have been verified with full-wave simulations, showing excellent agreement with theoretical results and, therefore, confirming the effectiveness of the presented design approach.

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

Post-mortem Peyer’s patches: Their potential application in forensic medicine

2009 ◽  
Vol 00 (00) ◽  
pp. 090513010017019-7
Author(s):  
Biagio Solarino ◽  
Giancarlo Di Vella ◽  
Thea Magrone ◽  
Felicita Jirillo ◽  
Angela Tafaro ◽  
...  
Keyword(s):  
Forensic Medicine ◽  
Potential Application ◽  
Peyer's Patches ◽  
Peyer’S Patches ◽  
Post Mortem

Comparison of Caseinolytic and Fibrinolytic Assays for Plasmin (Fibrinolysin) in “Fibrinolytic Agents”

1966 ◽  
Vol 15 (01/02) ◽  
pp. 252-272
Author(s):  
K. M Moser ◽  
Mary Belle Frey
Keyword(s):  
Linear Relationship ◽  
Potential Application ◽  
Fibrinolytic Agents ◽  
Linear Portion

Summary1. Caseinolytic and fibrinolytic systems for assay of plasmin in fibrinolytic agents are described which are based upon the determinations of AE/min during the linear portion of the casein-plasmin and fibrin-plasmin reaction curves respectively. A " caseinolytic-rate " unit and “fibrinolytic-rate " unit of ÄE/min × 103 during the linear portion of the respective curves are proposed.2. Data are presented indicating that a reliably linear relationship exists between plasmin concentration and these caseinolytic - and fibrinolytic-rate units.3. Data comparing results obtained with the proposed assay techniques and previously-used casein and fibrinolytic techniques are presented.4. Formulae by which caseinolytic-rate and fibrinolytic-rate units can be roughly converted into Remmert-Cohen type plasmin units are offered.5. The theoretical and practical problems which have influenced development of assays for fibrinolytic components are discussed.6. The advantages of the plasmin “rate unit” techniques vis a vis existing assays are delineated.7. The potential application of the techniques to measurements other than the plasmin content of fibrinolytic agents is discussed.

Sign in / Sign up

Export Citation Format

Share Document