Investigation of SAR on human head modelling using patch antenna in mobile communication for dual band frequency

INTERACT-2010 ◽  
2010 ◽  
Author(s):  
T. Anita Jones Mary ◽  
C. S Ravichandran ◽  
S. Jemima Priyadarshini ◽  
D. Sugumar
Keyword(s):  
Mobile Communication ◽  
Patch Antenna ◽  
Human Head ◽  
Dual Band ◽  
Band Frequency ◽  
Human Head Modelling

Dual Band Slotted Microstrip Patch Antenna For Wireless Applications

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Sushila Gupta ◽  
Esha Johari
Keyword(s):  
Patch Antenna ◽  
Dielectric Material ◽  
Dielectric Substrate ◽  
Microstrip Antennas ◽  
Dual Band ◽  
Band Frequency ◽  
Feeding Method ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Dual Band Antenna

This paper describes dual-band patch antenna. The dual-band operation is obtained by embedding a pair of Lshaped slots. Dual band antenna can reduce the size of antenna 40%, comparing with rectangular microstrip antennas on normal dielectric substrate, and have wider bandwidths for both bands. In this paper L-shaped slots patch antenna with length L= 25.74 mm and width W = 31.20 mm fabricated based on availability of Rogers Duorid 5880 dielectric material and a prototype antenna is developed. The dielectric constant of Rogers Duorid 5880 material is e= 2.2 having thickness h = 0.16 mm and copper thickness is 35 microns using a coaxial feeding method for dual band operation. The prototype antenna is operating in S band frequency range.

scholarly journals Design of Dual Band Antenna with Defects on Patch and Ground for Wireless Applications

2019 ◽  
Vol 8 (2) ◽  
pp. 261-264
Keyword(s):  
Reflection Coefficient ◽  
Frequency Band ◽  
Patch Antenna ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Band Frequency ◽  
Wireless Applications ◽  
Rectangular Patch ◽  
Dual Band Antenna ◽  
Simulation Results

In this paper, a rectangular patch antenna with slits for dual band capabilities is presented. The suggested antenna works for two frequencies which are at 2.5 GHz and 5.1 GHz. The first operating frequency is in the band of 2.3 to 2.7GHz with -16.8dB reflection coefficient at 2.5GHz resonating frequency, whereas the second band is 4.6 to 5.5GHz with -29.2dB reflection coefficient at 5.1GHz resonating frequency. The simulation results exhibit that, the suggested antenna works for dual band frequency having impedance bandwidth of 482 and 844 MHz respectively. The gain is observed as 2.9 dBi and 4.2 dBi of respective bands. The first frequency band can be used for Industrial, Scientific and Medical(ISM) applications and second frequency band can be used for C-band applications.

scholarly journals Metamaterial Based Circular Disc Patch Antenna Miniaturization

2018 ◽  
Vol 7 (5) ◽  
pp. 137-144 ◽  
Author(s):  
V. Kumar ◽  
Y. Wu
Keyword(s):  
Patch Antenna ◽  
Dimensional Space ◽  
Ground Plane ◽  
Electrical Circuit ◽  
Circular Disc ◽  
Dual Band ◽  
Band Frequency ◽  
Full Field ◽  
Space Reduction ◽  
Antenna Miniaturization

A novel metamaterial structure has been proposed for its operation at 2.4 GHz. A circular disc patch antenna resonating at dual band frequency with 2.4 GHz and 3.36 GHz has been designed using full field solver CST MWS tool and the loading effect of the metamaterial has been shown. The loading of metamaterial shows a radial size reduction of 56.71% in the circular disc patch (dimensional space reduction by 81.26%) while the effect of loading the metamaterial array and loading the metamaterial with defected ground plane show that without reducing the disc patch radius, the patch antenna can resonate at 1.00 and 1.942 GHz respectively, these yield a lower frequency shift of 58.33% and 19.79%. The designed metamaterial consists of two copper conductive concentric circular rings over a polyimide substrate. Various antenna parameters such as S11, VSWR, Bandwidth, Gain, Directivity and Radiation efficiency have been obtained for the circular disc patch antenna, circular disc patch antenna loaded with the metamaterial, circular disc patch antenna loaded with an array of metamaterial and are compared. A spice circuit has been derived for the reflection coefficient of the circular disc patch without loading the metamaterial, circular disc patch loaded with metamaterial using Keysight based ADS tool for its inclusion in a traditional electrical circuit solver tool.

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