The document from the Ministry of Industry and Information Technology (MIIT) only mentions polarization and gain for the antenna. When I applied, I specified several types of antennas online, including directional arrays, GP antennas, and Yagi antennas, with horizontal and vertical polarizations, and gains ranging from 2.15 to 5 dBi. Finally, the MIIT document registered the antenna gain as 2.15 dBi and polarization as V/H.
However, in the small print section, it states "Carry-on mobile device settings and usage," and I'm unsure if this might lead to misinterpretation or unnecessary scrutiny.