Investigation on a Multi-Band Inverted-F Antenna Sharing Only One Shorting Strip among Multiple Branch Elements

Nguyen, Tuan Hung; Oki, Takashi; Satō, Hiroshi; Koyanagi, Yoshio; Morishita, Hisashi

doi:10.1587/transcom.e98.b.1302

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Cited by 2 publications

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“…First, concerninng the input characteristics of the proposed antenna, to highlight the importance of the slots at the center of the substrate as mentioned above, we focus on the variation of VSWR when changing the slot length ls and the slot width ws. Similar to [3,8,15,18], and our previous works [39,40,41], in this letter we also use the criterion of VSWR ≤ 3 (|S 11 | ≤ −6 dB) to evaluate the resonant bandwidth of the antenna.…”

Section: Input Characteristicsmentioning

confidence: 99%

A simple printed antenna with broadband property and omnidirectional radiation patterns of wire dipole

Nguyen

Takizawa

et al. 2020

IEICE Electron. Express

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This letter presents a unique printed dipole antenna which can roughly cover an 80% fractional bandwidth (VSWR ≤ 3), and especially possess the omnidirectional radiation patterns similar to those of wire dipole antenna at its all resonant modes. The antenna is simple with a microstripfed structure which it is just composed of two arms with each one forming the shape of a conventional "inset-fed" rectangular patch antenna. At the lowest operation frequency for VSWR = 3, the antenna size is only 0.3λ × 0.008λ, showing its effectiveness in many applications of small antennas.

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