If a small form factor device integrates antennas with noticeable performance requirements, for example, Global Positioning System (GPS) or LTE, the antenna related design should be prioritized.

The key requirement in antenna design is that all antennas fulfill their performance targets in the actual use cases of the end product. The efficiency target for the LTE and GPS antennas should be a minimum of 50%. For the best possible GPS performance, the recommended efficiency is a minimum of 75%.