> 3.2 | Capacitor Supply

> If the module is integrated on a board with a power supply component that delivers 5V and sufficient current, it is possible to design a basic power supply solution for the module.
> The appropriate voltage can be achieved by adding one or two diodes in series with the power supply line. The voltage drop over the diodes will create a suitable voltage for the module.
> A big capacitor has to be added, able to supply the module during transmission bursts. The capacitor must be able to deliver up to 3A during 1 burst and must have low ESR values. These requirements translate to the following values:

> • | ESR values less than 50mOhm

> • | Ripple current more than 3A

> • | 4700 – 10 000 μF

> Figure 4: Capacitor supply