High Polarization Purity MMW Antenna Based on LTCC Technology

This paper shows a millimeter wave (MMW) antenna based on low temperature co-fired ceramic (LTCC) technology with high polarization purity. By using the LTCC technology with multilayer parasitic patches in vertical direction, a wide bandwidth and high polarization purity can be obtained for the designed antenna. The "V" type patch is designed based on LTCC multi-layer technology, which is shaped by changing the distance of patch between different layers. By building this multi-layer structure, the polarization purity and bandwidth of antenna can be improved significantly. The simulation results show that the reflection coefficient of the antenna is smaller than -10 dB from 24.28 GHz to 27.84 GHz with a relative bandwidth of about 13.6%, and the cross-polarization isolation is higher than 50 dB within the operation band. The simulated results verify that the proposed antenna can be a promising candidate for 5G communication systems.