Vishay has released a complete RFWaves reference design for a wireless monitoring system using a fully digital 2.4 GHz wireless link.
The design uses the RFW122-M-PA 1 Mbps direct sequence spread spectrum half duplex transceiver as its core component, along with a power amplifier.
It provides an output of 25 dBm and receiver sensitivity of -75 dBm while delivering real-time MPEG-4 compressed video. The specified operating range for the design is 100 m indoors and 300 m outdoors.
The high 2.4 GHz bandwidth and the link robustness result in a reliable video and audio link.
The system consists of two units, a camera and a display screen. These are linked by a one-way video link from the camera to the display screen and by a two-way audio link between the two units.
The reference design allows multiple remote camera units to be connected to a single base unit. Each remote unit has a CMOS image sensor which provides video stream or still images.
The video stream (with audio) is encoded in real time to MPEG-4 by a Zoran ZR452x processor and is transmitted back to the base unit. The base unit controls which remote unit is active. It receives the video stream (and can also send audio back), decodes it in real time and displays it on an internal LCD or external CRT monitor.
The base unit can also store the video images and audio to an MMC/SD card. A USB interface provides direct access to the stored data.
Icom IC-M423G VHF marine transceiver
Icom has announced the New Zealand launch of the IC-M423G fixed-mount VHF/DSC with integrated GPS...
Simoco SDB680 DMR base station
Simoco’s SDB680 DMR base station complies with ETSI DMR standards and delivers...
Fluke 96270A and 96040A Low Phase Noise RF Reference Sources
The Fluke Calibration 96270A and 96040A Low Phase Noise RF Reference Sources simplify RF...
