Chun‐Yih Wu

Wearable belt resonators model for wrist detection

Chieh-Sen Lee, Chun‐Yih Wu, Yen‐Liang Kuo

The object of this paper is to describe preliminary evaluation of new wearable microwave sensor module to detect wrist location. Two significant contributions are reported. Firstly, a frequency multiplexed 1-dimensional sensor array was developed using microstrip-line-excited complementary split-ring resonators (CSRRs). With the …

Wrist location by wearable bracelet belt resonators

Chieh-Sen Lee, Chun‐Yih Wu, Yen‐Liang Kuo

This paper presents the preliminary evaluation of a wearable 1-dimensional frequency multiplexed sensor array using microstrip-line-excited complementary split-ring resonators (CSRRs) module for detecting the location of the wrist. The sensor array was fabricated on a cylindrical structure, and a scheme was devised …

Low-profile tunable WWAN antenna for Whole-Metal-Covered mobile phone applications

Chun‐Yih Wu, Yen‐Liang Kuo, Keng-Chih Lin

A novel tunable coupled-fed dual inverted-L antenna (ILA) antenna suitable for the penta-band WWAN operation in the Whole-Metal-Covered (WMC) slim handset is presented. The antenna mainly comprises a variable chip-capacitor-loaded vertical radiating strip, which is co-existed with part of the metallic bezel …

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WWAN/LTE Handset Antenna with Shaped Circuit Board, Battery, and Metal Midplate

Kin‐Lu Wong, Hsuan‐Jui Chang, Fang‐Hsien Chu, Wei‐Yu Li et autres

ABSTRACT An onboard printed WWAN/LTE antenna of simple structure disposed in a small clearance of 8 × 36 mm2 in the ground plane of shaped circuit board in a slim handset is presented. The shaped circuit board has a large rectangular notch …

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Compact unibody dielectric rod antenna for mm-wave communication

Hung‐Hsuan Lin, Ta‐Chun Pu, Jui-Hung Chen, Chun‐Yih Wu

In this paper, we present a compact, low cost, high performance antenna design for mm-wave communication. A unibody dielectric rod antenna with bent waveguide tube section is injection molded from common plastic material. The compact antenna, which is connected to a wideband …

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Compact beam-switching antenna with shaped ground for MIMO application

Ta‐Chun Pu, Jui-Hung Chen, Hung‐Hsuan Lin, Chun‐Yih Wu

A novel commercial-able 3-sector antenna architecture with 6 digitally selectable basic switchable radiation patterns is proposed. Each sector is composed of a driven PIFA, a trimming slit and a RF current dragger. Each current dragger, a small resonator directed connect to system …

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Multiband 4-port MIMO antenna system for LTE700/2300/2500 operation in the laptop computer

Wei‐Yu Li, Wei-Ji Chen, Chun‐Yih Wu

A multiband 4-port MIMO antenna system for LTE700/2300/2500 operation in the laptop computer is presented. It mainly consists of a pair of two-antenna structures symmetrically disposed at right and left upper corners of the supporting metal frame of the laptop display respectively. …

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Research and development of RF and antennas at ITRI

Cheng‐Chung Chen, Chun‐Yih Wu, Jian-Yu Li, Shih‐Ming Wang

This article describes RF and antenna research undertaken by the Information and Communications research Laboratories of the Industrial Technology Research Institute (Hsinchu, Taiwan). This research focuses mainly on developing antennas, RF front end technology, and RF transceivers for use in fourth generation …

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A novel antenna beam switching technique on mobile devices for MIMO applications

Jui‐Hung Chen, Ta‐Chun Pu, Chun‐Yih Wu, Hung‐Hsuan Lin

In this article we will introduce an antenna structure with reconfigurable pattern, which comprising an active antenna and current draggers. We treat the antenna ground as a part of the radiator. Therefore, controlling the Rf current on antenna ground can manipulate the …

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Novel SAR-reducing add-on cover for MIMO handheld device

Ta‐Chun Pu, Jui‐Hung Chen, Hung‐Hsuan Lin, Chun‐Yih Wu

In this paper, we present an innovative wave-guiding structure for reducing EM power absorbed by human body. A MIMO handheld device with the proposed wave-guiding structure, constructed of metal patch or photovoltaic panel, can effectively reduce its SAR value. The radiation efficiency …

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Internal LTE/WWAN handset antenna integrated with solar cells for performance improvement

Wei‐Yu Li, Chun‐Yih Wu, Wei-Ji Chen, Hung‐Hsuan Lin

An internal LTE/WWAN handset antenna integrated with solar cells for performance improvement is presented. By simply designing an inverted-L current guiding structure to be coupled with series solar cells on the casing, the lower operating bandwidth and radiation efficiency of an internal …

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Photovoltaic panel as metamaterial antenna radome for dual‐band application

Ta‐Chun Pu, Hung‐Hsuan Lin, Chun‐Yih Wu, Jui‐Hung Chen

Abstract A novel planar dual‐band antenna is presented by using a panel of photovoltaic (PV) cells as a metamaterial layer for dual‐band operation. A 10‐Watt, 72‐cell unmodified commercial PV panel is applied as a transparent layer in the first operation band and …

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