The TI MicroReader was primarily designed for after market car immobilizer systems and hotel door locks. In such applications, low power consumption, short read ranges, and antennas that can operate close to metal are important requirements. These requirements impose certain restraints on the design of antennas and their construction. The parameters of such an antenna require a Q factor of less than 20, an inductance of between 46 ~ 48 µH, and a maximum recommended size of 200 mm × 200 mm.

