Design Section

Calculate the characterics impedance on a trace for various microstrip and stripline structures : Trace Impedance Calculator .

Here's an open paper (May 2002) on integrated antenna design on a RF module: Integrated Antenna Document.

Front page of Microwave Engineering (June 1999) with a picture of the first generation of Bluetooth modules. The building practice for the radio modules was unique at the time and since then, many companies have followed this module building practice for RF modules.

The main purpose of the second and third generation of Bluetooth modules (2000 to 2004) was to reduce the total cost. The sales price of the third generation of Bluetooth modules was about 80% lower than the first generation of Bluetooth modules.