A Compact Low-profile 5G Millimeter-wave Circularly Polarized Antenna Based on LTCC
DOI:
https://doi.org/10.13052/2023.ACES.J.380910Keywords:
5G millimeter wave (mm-Wave), circularly polarized (CP), low-profile, low temperature cofired ceramic (LTCC), substrate integrated waveguide (SIW)Abstract
In this paper, a circularly polarized millimeter-wave L-shaped dipole antenna based on low temperature cofired ceramic (LTCC) technology is proposed, which realizes compact size and low-profile performance. The designed antenna consists of radiation patches and the grounded coplanar waveguide-substrate integrated waveguide (GCPW-SIW) feeding structure, which connects each other by two via holes. The radiation patches include a pair of L-shaped patches and four parasitic patches. The simulated results show that the proposed antenna operates from 26.5 to 29.5 GHz for |S11|<−10 dB and AR<3 dB with a peak gain of 6.7 dBic. The antenna element size is only 0.58λ0×0.58λ0×0.056λ0, where λ0 is free-space wavelength at the center frequency of 28 GHz. A sample of the antenna is fabricated and measured to verify the proposed design, which has a good agreement with the simulated ones, indicating that the antenna has potential applications for the fifth generation (5G) mm-Wave n257 (26.5 - 29.5 GHz) frequency band communications and satellite communication systems.
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