Dual-band Wi-Fi modules are interference-free in challenging environmentsThe GS1550M/MD from GainSpan Corporation is a dual-band 802.11 a/b/g/n Wi-Fi solution that utilizes both the 2.4GHz and 5.0GHz spectrum, enabling customers to access cleaner spectrum for applications requiring relatively interference-free bandwidth. The new GS1550M/MD family provides reliable wireless connections, particularly in challenging environments such as healthcare facilities and industrial applications. The new family consists of two modules: the GS1550M which supports a dual-band stamped antenna and the GS1550MD which supports two dual-band external antennas for antenna diversity. The antenna diversity enhances signal coverage.
A complete solution for 802.11a/b/g/n Wi-Fi applications, the GS1550M/MD family features two UART and SPI interfaces for ease of integration with any 8/16/32-bit microcontroller and comes preloaded with serial to Wi-Fi firmware for communication with the MCU and complete Wi-Fi functionality. The modules offer advanced networking features and capabilities not readily available with other Wi-Fi modules including easy provisioning from a smartphone or web browser, over-the-air firmware updates, personal and enterprise wireless security, embedded DHCP, DNS and HTTP(S) servers/client software, XML parser, advanced mDNS/DNS-SD based device and service discovery and more.
The modules support data rates up to 150 Mbps, can operate in infrastructure or Limited AP mode and are fully compliant with 802.11a/b/g/n specifications. The modules provide support for peer-to-peer networking, allowing devices to connect to one another without an access point. The modules will be fully certified for major worldwide regulatory regions.
The highly integrated architecture of the family provides effective and dynamic power management. With both a Sleep and Deep Sleep option the modules can be rapidly put to sleep to reduce power consumption without loss of data and can then recover from the Deep Sleep state back to full operation in a few milliseconds. The modules also support a very low-power Standby mode, which reduces power consumption to a few microseconds.
For maximum design reuse, the GS1550M/MD family is pin-and-footprint compatible with the company’s GS1011M and GS1500M modules, giving device manufacturers the capability to use current designs to add “11a” capabilities. The GS1550M/MD modules are single-sided and designed so they can be easily soldered down on the customer application baseboard.
The new GS1550MD/M 802.11a/b/g/n low power Wi-Fi modules are sampling now. They will ship in volume production in Q4 2012 with FCC/ETSI/IC regulatory certification and Wi-Fi Alliance certification for 11a/b/g/n operation as well as Wi-Fi Direct.
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