Abstract
This paper presents a low-profile magneto-electric (ME) dipole antenna with an enhanced impedance bandwidth realized by the loading of shorting parasitic elements. The antenna contains a horizontal planar electric dipole antenna, a Γ-shaped shorted patch antenna, a pair of parasitic L-shaped shorted patches, and a direct feed. By loading of the parasitic L-shaped patches such that they are shorted to the ground, the proposed antenna attains a significant bandwidth enhancement while maintaining excellent broadside radiation characteristics. An antenna prototype with a low profile of only 0.11 λ0 was fabricated and tested (λ0 is the free-space wavelength referring to the center frequency). The antenna achieves a measured impedance bandwidth of 75.64% (1.34-2.97 GHz) for a voltage standing wave ratio (VSWR) of less than 2. Within the operating band, the measured gain ranges from 6.23 to 8.49 dBi. Additionally, stable radiation patterns on both E-and H-planes with a high front-to-back ratio of more than 20.5 dB are achieved.
| Original language | English |
|---|---|
| Article number | 9419000 |
| Pages (from-to) | 64852-64859 |
| Number of pages | 8 |
| Journal | IEEE Access |
| Volume | 9 |
| DOIs | |
| State | Published - 2021 |
Keywords
- Bandwidth enhancement
- low profile
- magneto-electric (ME) dipole
- shorting parasitic element
- wideband
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