There are four lookup table (LUTs) used to form the frequency divider. Think of these like a NAND or XOR gate, but you get to decide how the output truth tables will perform. The output is fed ...

These operate in the same unlicensed 2.4 GHz ISM (Industrial, Scientific and Medical) radio band as does Bluetooth. To improve performance in these environments, a technique known as Adaptive ...

The Bluetooth module wants 3.3v logic levels so that is taken into account. The image above shows a buffer chip doing the conversion, but the Fritzing schematic on the post uses a voltage divider.

Injection locking [1] can not only improve oscillator frequency stability and phase noise, but act as a selective frequency divider as well [2][3]. You can find sample setups of a simple ...