Abstract
This paper focuses on a printed inverted-F antenna (PIFA) with meandering line and meandering shorting strip under 2.4 GHz industrial, scientific, and medical (ISM) band for Internet of things (IoT) applications. Bluetooth Low Energy (BLE) technology is one of potential platforms and technologies for IoT applications under ISM band. Printed circuit board (PCB) antenna commonly used in commercial and medical applications because of its small size, low profile, and low cost compared to low temperature cofired ceramic (LTCC) technology. The proposed structure of PIFA is implemented on PCB to gain all these advantages. Replacing conventional PCB line in PIFA by the meandering line and meandering shorting strip improves the efficiency of the PIFA as well as the bandwidth. As a case study, design and measurement results of the proposed PIFA are presented.
Highlights
Internet of things (IoT) is a concept that applies current network technology to improve different industries and environment for a higher quality of life in society
The return loss is measured by a network analyzer, and the radiation patterns are carried out by an antenna measurement system
It shows that the Walsin and Murata antennas have a little size smaller than the proposed printed inverted-F antenna (PIFA)
Summary
Internet of things (IoT) is a concept that applies current network technology to improve different industries and environment for a higher quality of life in society. Several designs [14,15,16] were proposed to reduce the antenna size by loading with capacitance since this lowers the resonant frequency, making it appear electrically longer.
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