Innovative Analog Solution for Automotive Toll Tag Systems

July 16, 2012 // By Nick Flaherty
Skyworks Solutions has introduced analog solutions for low-noise receivers being used in high-sensitivity radio frequency (RF) automotive highway tag applications, including toll tag transponder systems.

Skyworks’ devices are being deployed across 40 million transponders supporting small signal RF applications where primary DC power is not available.
“Electronic toll collection systems represent yet another application that leverages Skyworks’ wireless expertise to combine the benefits of RFID, microwave technology and satellite positioning to enable increased interoperability, particularly as cities and transportation agencies look to reduce costs, ease traffic congestion, improve safety and minimize environmental impacts,” said Liam Griffin, executive vice president and general manager of high performance analog at Skyworks.
The SMS7630-079LF is a surface mountable, plastic packaged silicon mixer for RF and microwave mixers and detectors. The series includes low-barrier diodes and zero-bias detectors that combine Skyworks’ advanced semiconductor technology with low-cost packaging techniques. All solutions are 100 percent DC tested and deliver tight parameter distribution, which minimizes performance variability. Wiring configurations include singles, common cathode, series pairs, unconnected pairs and dual-series pairs. They may be used for frequencies up to 10GHz, given the low capacitance.