jimbies said:Atmel has a new Reference Design for their RF Chip. Below is from their News release that I received 2 days back.
New Reference Design for AT86RF211. A new reference design for the AT86RF211 wireless data transceiver is now available. This is a tri-band board: 433, 868 and 915 MHz design, with a single Printed Circuit Board and an adjustable antenna! This makes it possible to build a unique RF platform for many applications worldwide, using the license-free ISM radio spectrum. More than ever, this is an attractive alternative to crowded 2.45 GHz solutions: easy-to-use, 64 Kbits/s, robust and very low cost (BOM = $0.50)! Gerber files are available upon request smartRF@gfo.atmel.com.
Kripton2035 said:microchip have such chips, called "rfpic", look at their datasheets.