DSP Chips Form Ideal Foundation For White Space Radios

Texas Instruments’ multicore system-on-chip (SoC) processors are one good way to implement radios for the new white space wireless standards. TI’s KeyStone line consists of a mix of DSPs and RISC processors that can be programmed to meet current and forthcoming white space standards. White space refers to the unused TV broadcast channels in the 54- to 698-MHz spectrum. These …

NFC Lets You Leave Your Cash And Credit Cards At Home

Soon, smart phones will include near-field communications (NFC) wireless technology so they can be used like keys or credit cards. Users simply wave their phone near an NFC reader, or tap it, and the devices exchange data to make a transaction. Automatic paring is another emerging application. The Radio Technology NFC’s maximum range is about 20 cm with a typical …

Using proximity sensing to meet mobile device FCC SAR regulations

In this Product How-To article, Riaan du Toit of Azoteq, describes how to use the company’s patented proximity sensing technology to measure and adapt capacitive sensors in wireless mobile devices that meet the FCC specific absorption rate (SAR) regulations. The use of wireless mobile devices has increased rapidly in the last few years, with high demands on wireless connection …