scholarly journals A Compact Experimental Planar Antenna with a USB Connector for Mobile Phone Application

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Cheng-Hung Lin ◽  
Kwong-Kau Tiong
Keyword(s):  
Adverse Effect ◽  
Mobile Phone ◽  
Antenna Design ◽  
Planar Antenna ◽  
Universal Serial Bus ◽  
Good Design ◽  
Mobile Phone Application ◽  
Close Vicinity ◽  
Two Sides ◽  
Good Coverage

A practical antenna design combined with a universal serial bus (USB) connector in close vicinity is proposed. In the proposed arrangement, the antenna unit consisted of two planar inverted F antennas (PIFAs) placed on the two sides of the USB connector. The antenna is located at the bottom of the mobile phone to avoid the crowded space on the top side of the phone where various mobile phone accessories are usually assigned. A diplexer is incorporated in the unit to alleviate the adverse effect of the metal USB connector on the radiating efficiency of the antenna. A prototype antenna was fabricated and tested and showed good coverage for GSM850/900/1800/1900, UMTS2100, and LTE700/2500 multibands operation. The overall performances demonstrated the good design of the proposed unit for mobile phone application.

scholarly journals A Small Planar Antenna for 4G Mobile Phone Application

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Hu Jian-rong ◽  
Li Jiu-sheng ◽  
Wu Di
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Return Loss ◽  
Experimental Results ◽  
Impedance Bandwidth ◽  
Planar Antenna ◽  
Radiation Patterns ◽  
Mobile Phone Application ◽  
Analysis And Design ◽  
Internal Antenna

The analysis and design of a small planar multiband antenna operating in the 4G frequency bands are presented. The numerical and experimental results demonstrated that the proposed antenna satisfies the requirement of 6 dB return loss for the impedance bandwidth of the LTE700/LTE2300/LTE2500 and WiMAX3500 bands. The gains at 750 MHz/2.3 GHz/2.6 GHz/3.5 GHz are 2.1 dBi/4.9 dBi/4.7 dBi/4.3 dBi, respectively. The measured radiation patterns verify the suitability of the antenna to be employed in mobile phones. The dimensions of the radiant patch are 49 × 10 mm2. The proposed antenna can be easily fabricated and customized to various 4G mobile phones as a compact internal antenna.

Mobile Phone Application for Supporting Persons with Higher Brain Dysfunctions

2010 ◽  
Vol 130 (3) ◽  
pp. 394-400
Author(s):  
Tsuyoshi Nakayama ◽  
Yuka Miyaji ◽  
Seishi Kato ◽  
Nobuhisa Sakurada ◽  
Noriyuki Ueda ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Mobile Phone Application

Quad-Band multi-polarized antenna with modified electric-inductive−capacitive resonator

2021 ◽  
pp. 1-12
Author(s):  
Ghanshyam Singh ◽  
Binod Kumar Kanaujia ◽  
Vijay Kumar Pandey ◽  
Sachin Kumar
Keyword(s):  
Communication Systems ◽  
Ground Plane ◽  
Axial Ratio ◽  
Antenna Design ◽  
Planar Antenna ◽  
Rectangular Slot ◽  
Printed Circuits ◽  
Rectangular Patch ◽  
Easy Integration ◽  
Defected Ground Plane

Abstract A compact circularly polarized (CP) patch antenna is presented for modern communication systems. The prospective antenna consists of a microstrip-line inset-fed rectangular patch and a defected ground plane. A rotated rectangular slot and a modified electric-inductive-capacitive (m-ELC) resonator are introduced in the patch and the ground plane to achieve multiband behaviour. A corner of the radiating patch is truncated and an arrow-shaped stub is introduced for generating circular polarization. The physical area of the substrate is 0.26λ0 × 0.22λ0, and the radiator size is 0.16λ0 × 0.14λ0, where λ0 is the free-space wavelength estimated at the lowest frequency. The measured (S11≤-10 dB) bandwidths of the antenna are 80 MHz (3.58%) at 2.23 GHz, 75 MHz (2.64%) at 2.84 GHz, 80 MHz (2.50%) at 3.19 GHz, and 70 MHz (1.82%) at 3.83 GHz. The measured 3-dB axial ratio bandwidths are 40 MHz (1.41%), 100 MHz (3.12%), and 60 MHz (1.57%) at 2.84, 3.20 and 3.82 GHz, respectively. The proposed planar antenna design does not need dual-feed or multi-layered patches for achieving multiple CP bands. It offers easy integration with the printed circuits of the communication systems.

Development of a mobile phone application for the prediction of harmful algal blooms in inland lakes

2016 ◽  
Vol 188 (1) ◽  
pp. 1-17 ◽  
Author(s):  
J.P. Gotthold ◽  
A. Deshmukh ◽  
V. Nighojkar ◽  
J. Skalbeck ◽  
D. Riley ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Mobile Phone Application ◽  
Inland Lakes
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