Chia-Hao Ku

Prof. Dr. Chia-Hao Ku


Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 May 2010 in Microwave and Optical Technology Letters
Verified
Journal Article
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Chia-Hao KuChia-Hao Ku
Chia-Hao Ku
LLLung‐Kun Li
Lung‐Kun Li
WMWei-Lung Mao
Wei-Lung Mao

5 June 2019 in Sensors
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Journal Article
Open access
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WCWei-Yuan Chiang
Wei-Yuan Chiang
Chia-Hao KuChia-Hao Ku
Chia-Hao Ku
CCChiung-An Chen
Chiung-An Chen
LWLe-Yu Wang
Le-Yu Wang
PAPatricia Angela Abu
Patricia Angela Abu
SCShih-Lun Chen
Shih-Lun Chen
Wireless Sensor Networks (WSNs) had been applied in Internet of Things (IoT) and in Industry 4.0. Since a WSN system contains multiple wireless sensor nodes, it is necessary to develop a low-power and multiband wireless communication system that satisfies the specifications of the Federal Communications Commission (FCC) and the Certification European (CE). In a WSN system, many devices are of very small size and can be slipped into a Universal Serial Bus (USB), which is capable of connecting to wireless systems and networks, as well as transferring data. These devices are widely known as USB dongles. This paper develops a planar USB dongle antenna for three frequency bands, namely 2.30–2.69 GHz, 3.40–3.70 GHz, and 5.15–5.85 GHz. This study proposes a novel antenna design that uses four loops to develop the multiband USB dongle. The first and second loops construct the low and intermediate frequency ranges. The third loop resonates the high frequency property, while the fourth loop is used to enhance the bandwidth. The performance and power consumption of the proposed multiband planar USB dongle antenna were significantly improved compared to existing multiband designs.

29 January 2011 in Circuits, Systems, and Signal Processing
Verified
Journal Article
Closed access
PDF file
WMWei-Lung Mao
Wei-Lung Mao
WMWann-Jiun Ma
Wann-Jiun Ma
Ying-Ren ChienYing-Ren Chien
Ying-Ren Chien
Chia-Hao KuChia-Hao Ku
Chia-Hao Ku