As 5G is undoubtedly the most prominent point for major smartphone makers this year. Apple is reported to be unveiled 5G-supported iPhones with more powerful Chipset this year. A new report from the Fast Company indicates that Qualcomm's antennas (QTM 525 mmWave) are too big for Apple, and that's why the iPhone maker is designing the antenna module that will be used in its upcoming 5G iPhones. According to the source, "Apple balked at the QTM 525 millimeter-wave antenna module offered to it by Qualcomm because it doesn't fit into the sleek industrial design Apple wants for the new phone." It's not finalized that Apple will actually use its own 5G antenna for its 2020 5G iPhones.
The company is apparently considering two designs: a thinner one using Apple-made antennas, and a thicker one that would feature Qualcomm's. Apple's 5G iPhone would use a "phased array" antenna that uses two parts to form a signal beam. This beam would be able to be steered electronically. The development of creating a 5G antenna for mmWave is more difficult for Apple because there is an immense need for an antenna in mmWave technology because 5G smartphones require multiple mmWave antennas to ensure good connectivity.
Related: Apple iPhone 12 (2020) could get In-Display Touch ID, and A14 might be a 5nm chip.
Source