Fast and efficient FDTD simulations of personal wireless devices for SAR compliance testing and antenna design

2002 ◽  
Author(s):  
G. Lazzi ◽  
O.P. Gandhi ◽  
D. Sullivan
Keyword(s):  
Antenna Design ◽  
Wireless Devices ◽  
Compliance Testing ◽  
Fdtd Simulations

scholarly journals Integrated Miniature Multiband Antenna Designed for WWD and SAR Assessment for Human Exposure

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Brahim Fady ◽  
Jaouad Terhzaz ◽  
Abdelwahed Tribak ◽  
Fatima Riouch
Keyword(s):  
Human Body ◽  
Human Exposure ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Low Cost ◽  
Antenna Design ◽  
Head Model ◽  
Use Case ◽  
Wireless Devices ◽  
Multiband Antenna

The article introduces a new, low-cost, integrated, multiband antenna design intended for wristbands and wearable wireless devices (WWD). With a miniaturized planar square-shape sizing 29 × 29 mm2, the antenna can fit easily inside WWDs. The proposed design covers the most used frequency bands such as LTE2300, ISM2400, LTE2600, WiMAX3500, WiMAX5200, and ISM5800 in which the antenna reaches up to −25 dB and 6.9 dBi in terms of S11 and gain, respectively. To evaluate the exposure amenability of design on human body, we studied the specific absorption rate (SAR) of the design in two main use cases: multilayered human wrist model and a SAM (Specific Anthropomorphic Mannequin) head model. In each use case, the SAR results in different positions for all frequencies are compared to FCC standards.

An automated SAR measurement system for compliance testing of personal wireless devices

1999 ◽  
Vol 41 (3) ◽  
pp. 234-245 ◽  
Author(s):  
Qishan Yu ◽  
O.P. Gandhi ◽  
M. Aronsson ◽  
Ding Wu
Keyword(s):  
Measurement System ◽  
Wireless Devices ◽  
Compliance Testing

Wideband Planar 2 × 2 MIMO Antenna Design for 5G NR Wireless Devices

2021 ◽  
pp. 705-712
Author(s):  
Maruti Tamrakar ◽  
K. Usha Kiran ◽  
Anjali Singh ◽  
P. Archana
Keyword(s):  
Antenna Design ◽  
Wireless Devices ◽  
Mimo Antenna

scholarly journals Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

2017 ◽  
Author(s):  
Pham Trung Minh ◽  
Nguyen Trong Duc ◽  
Phan Xuan Vu ◽  
Nguyen Thanh Chuyen ◽  
Vu Van Yem
Keyword(s):  
Ground Plane ◽  
Antenna Design ◽  
Wireless Devices ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Pin Diodes ◽  
Antenna Structure ◽  
Frequency Bands ◽  
Low Profile ◽  
Two Sides

In this paper, we design and implement a low profile frequency reconfigurable Planar Inverted-F Antenna (PIFA) for WLAN, m-WiMAX and UMTS applications. Dierent from several conventional designs, the air layer in our antenna is removed, while the radiator patches and ground plane are printed on two sides of the same substrate. This makes the antenna structure thin and lightweight. The defected ground structure (DGS) and coplanar sorting-trips are also designed for adjusting lower operating frequencies without increasing the antenna’s size. Three PIN-diodes are used in appropriate positions for accurate switches between frequency bands. Moreover, the three radiator patches’ parameters are optimally selected on all configurations using Genetic Algorithm (GA). Simulation results show that depending on the ON/OFF states of the PIN-diodes, the antenna can operate in three applicable frequency bands, i.e., 2.1 GHz, 2.4 GHz, and 3.5 GHz with the corresponding peak gains of 0.48 dBi, 3.55 dBi, and 4.33 dBi. The antenna occupies an overall size of 63.5x33.5x1.6 mm3, which can be easily fabricated and integrated into small wireless devices. Simulated and measured results are also compared to validate the correctness the antenna design.

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