A Deformed-Film UWB Antenna

Guan, Ning; Tayama, Hiroiku; Furuya, Hirotaka; Delaune, D.; Ito, Koichi

doi:10.1587/transcom.e93.b.2531

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…In order to verify the validity of the proposed system, an UWB antenna shown in Figure 4 is measured, where the antenna is rolled from a flexible flat film so as it has omni radiation patterns in its azimuth plane even at high frequencies [17]. The micro-coaxial cable with a diameter of 0.8 mm and a length of 200 mm is used to connect the antenna and the O/E converter.…”

Section: Amplitude Measurementmentioning

confidence: 99%

An Antenna Measurement System Based on Optical Feeding

Hosono

Guan

2013

International Journal of Antennas and Propagation

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A radiation measurement system by using optical feeding is proposed. The system replaces conventional electrical feeding to antennas by the optical feeding which is composed of an electrical/optical (E/O) converter, a graded-index (GI) optical fiber, and an optical/electrical (O/E) converter. The GI fiber is used so as the O/E converter becomes very compact by using a simple means of coupling between the fiber and the photo-diode in the converter. A vertical surface emitting laser (VCSEL) is used in the E/O converter to make the system available till 6 GHz. This combination also makes the system cost-effective. The validity as well as the advantage of the system is demonstrated by measuring an ultra-wideband (UWB) antenna both by the optical and electrical feeding systems and comparing with a calculated result. Ripples in radiation pattern due to the electrical feeding are successfully suppressed by the optical feeding. For example, in a radiation measurement on the azimuth plane at 3 GHz, ripple amplitude of 1.0 dB that appeared in the electrical feeding is reduced to 0.3 dB. In addition, a circularly polarized (CP) antenna is successfully measured by the proposed system to show that the system is available not only for amplitude but also phase measurements.

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Section: Amplitude Measurementmentioning

confidence: 99%

An Antenna Measurement System Based on Optical Feeding

Hosono

Guan

2013

International Journal of Antennas and Propagation

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“…Figure 1 shows the configuration of the proposed antenna which consists of a radiation element and a ground plane. The element composed of a rectangle, a half ellipse and a square base covers fully the UWB range [5]. In order to realize necessary band rejection, the antenna is fed by a microstrip line which is constructed on the back of the ground plane as shown in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

A UWB band-rejected antenna with embedded nonuniform microstrip line

Guan

Hosono

Tayama

et al. 2011

2011 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications

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An ultra-wide band (UWB) antenna with band rejection on the range of the wireless local area network (WLAN) is proposed. The antenna consists of a radiation element with broadband radiation and a nonuniform microstrip line for necessary band rejection. The nonuniform microstrip line is designed by the inverse scattering technique. A fabricated antenna is well designed and radiates properly in the UWB range except the WLAN range.

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