Skin exposed 5 GHz antenna safety challenges and radiation performances analysis based on method of moments

2021 ◽  
Author(s):  
Imen Khadhraoui ◽  
Taha Ben Salah ◽  
Taoufik Aguili
Keyword(s):  
Method Of Moments ◽  
5 Ghz

scholarly journals Design of a Dual-Band Bidirectional Antenna Using Superellipse-Monopole-Fed Rectangular Ring for IEEE 802.11 a/b/g/n Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-11
Author(s):  
Ekajit Khoomwong ◽  
Chuwong Phongcharoenpanich
Keyword(s):  
Method Of Moments ◽  
Low Cost ◽  
Field Tests ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Surface Probe ◽  
Ring Antenna ◽  
Measured Impedance ◽  
5 Ghz ◽  
Good Agreement

This paper presents the design of a dual-band bidirectional ring antenna fed by a superellipse surface probe for 2.4/5 GHz WLAN applications. The Method of Moments (MoM) with RWG basis function was utilized in the study and design processes. A prototype antenna was fabricated successfully with the advantages of simple and low-cost structure. The measured impedance bandwidth of 810 MHz (2.10–2.91 GHz) and 2.39 GHz (3.57–5.96 GHz) is achieved for the first and second band, respectively. The peak gains are also feasible, 4.67 dBi at 2.45 GHz and 7.83 dBi at 5.5 GHz, with bidirectional radiation patterns for both bands. From the experimental field tests, the proposed antenna was suitable for most applications in long and narrow communication sites in 2.4/5 GHz bands as desired. Also, the measured and calculated results were in good agreement.

scholarly journals Corporate-Feed Multilayer Bow-Tie Antenna Array Design Using a Simple Transmission Line Model

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
S. Didouh ◽  
M. Abri ◽  
F. T. Bendimerad
Keyword(s):  
Transmission Line ◽  
Antenna Array ◽  
Method Of Moments ◽  
Return Loss ◽  
Transmission Line Model ◽  
Line Model ◽  
Technological Characteristics ◽  
Simulation Results ◽  
5 Ghz ◽  
Bow Tie

A transmission line model is used to design corporate-fed multilayered bow-tie antennas arrays; the simulated antennas arrays are designed to resonate at the frequencies 2.4 GHz, 5 GHz, and 8 GHz corresponding to RFID, WIFI, and radars applications. The contribution of this paper consists of modeling multilayer bow-tie antenna array fed through an aperture using transmission line model. The transmission line model is simple and precise and allows taking into account the whole geometrical, electrical, and technological characteristics of the antennas arrays. The proposed transmission line model showed its interest in the design of different multilayered bow-tie antennas and predicted the correct resonance frequency for different applications in telecommunications. To validate the proposed transmission line model, the simulation results obtained are compared with those obtained by the method of moments. The results of simulations are presented and discussed. Using this transmission line approach, the resonant frequency, input impedance, and return loss can be determined simultaneously. The paper reports several simulation results that confirm the validity of the developed model. The obtained results are then presented and discussed.

Advances in rib waveguide analysis using the weighted index method or the method of moments

1990 ◽  
Vol 137 (1) ◽  
pp. 27 ◽  
Author(s):  
P.C. Kendall ◽  
M.J. Robertson ◽  
P.W.A. McIlroy ◽  
S. Ritchie ◽  
M.J. Adams
Keyword(s):  
Method Of Moments ◽  
Index Method ◽  
Rib Waveguide ◽  
Weighted Index

ASSESSMENT OF THE DIRECT QUADRATURE-BASED SECTIONAL METHOD OF MOMENTS FOR THE SIMULATION OF EVAPORATING POLYDISPERSE SPRAYS

2016 ◽  
Vol 26 (2) ◽  
pp. 163-186 ◽  
Author(s):  
W. W. Gumprich ◽  
B. Synek ◽  
Amsini Sadiki
Keyword(s):  
Method Of Moments

Soot Particle Deposition within Porous Structures using a Method-of-Moments-Lattice-Boltzmann Approach

2006 ◽  
Vol v4 (i2) ◽  
pp. 221-232
Author(s):  
Bernhard F.W. Gschaider ◽  
Claudia C. Honeger ◽  
Christian E. P. Redl ◽  
Johannes Leixnering
Keyword(s):  
Method Of Moments ◽  
Lattice Boltzmann ◽  
Particle Deposition ◽  
Soot Particle ◽  
Porous Structures

Microwave wide band absorption by carbon from Corn cob-1

2016 ◽  
Vol 12 (2) ◽  
pp. 4204-4212 ◽  
Author(s):  
Maheshwar Sharon ◽  
Ritesh Vishwakarma ◽  
Abhijeet Rajendra Phatak ◽  
Golap Kalita ◽  
Nallin Sharma ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Agricultural Waste ◽  
Wide Band ◽  
Nickel Nitrate ◽  
Equivalent Amount ◽  
Frequency Range ◽  
Corn Cob ◽  
Different Temperatures ◽  
Band Absorption ◽  
5 Ghz

Corn cob, an agricultural waste, is paralyzed at different temperatures (700oC, 800oC and 900oC). Microwave absorption of carbon in the frequency range of 2 GHz to 8 GHz is reported. Carbon activated  with 5%  nickel nitrate showed more than 90% absorption of microwave in the frequency range from 6 GHz to 8 GHz, while carbon activated  with 10% Nickel nitrate treated corn cob showed 90% absorption  in the frequency range of 2.5 GHz to 5 GHz. Carbon showing the best absorption are characterized by XRD, Raman spectra and SEM . It is suggested that corn cob treatment   alone with KOH did not improve the microwave absorption, whereas treatment along with nickel nitrate improved the absorption property much better. It is proposed that treatment with nickel nitrate helps in creating suitable pores in carbon   which improved the absorption behavior because while treating carbon with 1N HCl helps to leach out nickel creating equivalent amount of pores in the carbon.

Analog Circuit Failure Analysis Using Time-Resolved Emission

2005 ◽  
Author(s):  
B.J. Cain ◽  
G.L. Woods ◽  
A. Syed ◽  
R. Herlein ◽  
Toshihiro Nomura
Keyword(s):  
Analog Circuits ◽  
Integrated Circuit ◽  
Analog Circuit ◽  
Photon Emission ◽  
Nonlinear Process ◽  
Time Resolved ◽  
Non Invasive ◽  
Highly Nonlinear ◽  
Excellent Spatial Resolution ◽  
5 Ghz

Abstract Time-Resolved Emission (TRE) is a popular technique for non-invasive acquisition of time-domain waveforms from active nodes through the backside of an integrated circuit. [1] State-of-the art TRE systems offer high bandwidths (> 5 GHz), excellent spatial resolution (0.25um), and complete visibility of all nodes on the chip. TRE waveforms are typically used for detecting incorrect signal levels, race conditions, and/or timing faults with resolution of a few ps. However, extracting the exact voltage behavior from a TRE waveform is usually difficult because dynamic photon emission is a highly nonlinear process. This has limited the perceived utility of TRE in diagnosing analog circuits. In this paper, we demonstrate extraction of voltage waveforms in passing and failing conditions from a small-swing, differential logic circuit. The voltage waveforms obtained were crucial in corroborating a theory for some failures inside an 0.18um ASIC.

Sign in / Sign up

Export Citation Format

Share Document