Low energy transmitter

A battery free low-energy communication tag, comprising:

• a transmitter including:
• a reference voltage generator supplying a voltage to an oscillator circuit;
• and
• an oscillator circuit comprising two pairs of semiconductor devices, wherein each pair of a semiconductor device includes a device with a gate node coupled to an antenna positive node interface (Vop) via a capacitor and a drain connected to an antenna negative node interface (Von) and a device with a gate node coupled to an antenna positive node interface (Von) via a capacitor and a drain connected to an antenna negative node interface (Vop), wherein the oscillator circuit is connected to a common mode feedback circuit;
• wherein an antenna is coupled between the antenna positive node interface and the antenna negative node interface, the antenna being an oscillating inlay antenna, and wherein an input and output of the oscillating inlay antenna is maintained at a low voltage.

A Bluetooth low energy communication device, comprising:

• a transmitter;
• an oscillator circuit comprising two pairs of semiconductor devices, wherein each pair of a semiconductor device includes a device with a gate node coupled to an antenna positive node interface (Vop) via a capacitor and a drain connected to an antenna negative node interface (Von) and a device with a gate node coupled to an antenna positive node interface (Von) via a capacitor and a drain connected to an antenna negative node interface (Vop), wherein
• the oscillator circuit connected to a common mode feedback circuit;
• and
• a reference voltage generator supplying a voltage to the oscillator circuit;
• wherein an antenna is coupled between the antenna positive node interface and the antenna negative node interface, the antenna being an oscillating inlay antenna, and wherein an input and output of the oscillating inlay antenna is maintained at a low voltage.