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Fujitsu has announced a mobile WiMAX chip-set optimised for small embedded modules targeting portable devices such as smart phones and PDAs. The chip-set includes a baseband device (MB86K22), an RF device (MB86K52) and a dedicated power management device (MB39C316), which are the essential components required for competitive WiMAX modules. The chip-set has been designed so that the size of a resulting WiMAX module will be 12x12mm. The idle current, which has a direct impact on the battery life, achieves less than 0.5mA, thus helping the development of desirable mobile WiMAX terminals. The matured software stacks have been proven in the previous generation of devices, while power management schemes have also been optimised to a comparable level. Mobile WiMAX terminal manufacturers can therefore focus their engineering effort on developing desirable user interfaces and services. The MB86K22 baseband is fabricated in Fujitsu's own 65nm advanced CMOS low-leakage process technology, and achieves a 36% reduction in operating-power consumption. With power gating technology, which shuts down the power supply in the unused blocks inside the device, the entire mobile WiMAX module will consume only 0.5mA, which results in longer battery life. The MB86K52 RF device is based on CMOS process technology, and supports 2.3GHz, 2.5 and 3.5GHz. It also supports MIMO technology. The MB39C316 eliminates all of the complex and time-consuming design issues associated with power management, by accommodating a single battery cell thereby minimising the peripheral components outside the module.