Quatech 802.11B/G manual Antenna Location

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Quatech, Inc.

Airborne Enterprise Module Databook

 

 

PCB Embedded – This approach embeds an antenna design into the host PCB. This approach is very common with add-in WiFi card (CF, PCMCIA, SDIO, etc.) as it requires no external connections and is the cheapest production approach. The lower production cost requires significant development cost and lack of performance and flexibility.

Chip – The integration of a chip antenna is simple and requires a relatively small footprint on the host system, however, it does suffer from the same limitations of flexibility and performance seen with the PCB embedded approach. There are relatively large numbers of suppliers of this type of antenna; there is also a range of configuration and performance options.

Flying Lead – This approach is similar to the flying lead solution for external antennas, the difference is that the form factors are smaller and provide a range of chassis and board mounting options, all for internal use. This approach suffers less from the performance and flexibility limitations of the other approaches, since the location of the antenna it not determined by the host PCB design. The assembly of a system using this approach maybe slightly more complex since the antenna is not necessarily mounted on the host PCBA.

8.5Antenna Location

The importance of this design choice cannot be over stressed; it can in fact be the determining factor between success and failure of the WiFi implementation.

There are several factors that need to be considered when determining location:

Distance of Antenna from radio

Location of host system

Proximity to RF blocking or absorbing materials

Proximity to potential noise or interference

Position relative to infrastructure (Access Points or Laptops)

Orientation of host system relative to infrastructure

Is it known

Is it static

To minimize the impact of the factors above the following things need to be considered during the development process:

Minimize the distance between the radio and the location of the antenna. The coaxial cable between the two impacts the Transmit Power and Receive Sensitivity negatively. Quatech recommends using 1.32-1.37mm outer diameter U.FL coaxial cables.

Minimize the locations where metal surfaces come into contact or are close to the location of the antenna.

Avoid locations where RF noise, close to or over lapping the ISM bands, may occur. This would include microwave ovens and wireless telephone systems in the 2.4GHz and 5.0GHz frequency range.

Mount the antenna as high on the equipment as possible.

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Contents Product Specification Airborne Enterprise Module Databook Quatech Confidential Quatech, Inc. HeadquartersAirborne Enterprise Module Databook Contents Figures Terminology ConventionsFile Format Product Description WLNG-AN-DP500 Module ExampleBlock Diagram WLNG-SE/SP/AN/ET-DP500 Block DiagramModel Numbers Model NumbersPin out and Connectors Module Pin DefinitionGpio CTS2 Uart Ethernet PHY Port Digital Uart PortsUart Pin Definition Debug/Console Port Serial Peripheral Interface SPIGeneral Purpose Input/Output Gpio Connector Definition RF ShieldElectrical & RF Specification Operating Conditions & DC SpecificationSymbol Parameter Min Typ Max Units Absolute Maximum Values1Transmitting @ 11Mb/s 10/100 100% Duty Cycle RF Characteristics 802.11b/g Symbol Parameter Rate Mb/s Min Average Peak Units DBm / mWBand Supported Data Rates Mb/s Band Region Freq Range No. Channels GHzTransmit Power AC Electrical Characteristics Transmitter Performance/RangeRadio Typical Performance Range Typical Outdoor DistanceSPI AC Characteristics SPI InterfaceUART2 Pin Debug Pin Definition DescriptionSPI Protocol SPI Read/Write TimingSPI Commands SPI Command DescriptionCommand Name Description Hex Tx Message HeaderIntena Antenna Selection AntennaHost Board Mounted Antenna Antenna Type Features Cost Size Availability Performance Host Chassis Mounted AntennaEmbedded Antenna Embedded Antenna OptionsAntenna Location Performance Airborne Enterprise Module Databook Reset Function Symbol ParameterRadio Connector DF12-36DS-0.5VXX Hirose Board Connector DF12-36DP-0.5VXX HiroseRF Connector Mechanical OutlineCertification & Regulatory Approvals FCC StatementFCC RF Exposure Statement Information for Canadian Users IC Notice11.4 FCC/IOC Modular Approval Country StandardRegulatory Test Mode Support Mechanical Approvals Physical & Environmental ApprovalsTest Reference Conditions Change Log Date Section Change Description Author

802.11B/G specifications

Quatech 802.11B/G is a versatile wireless communication solution that has gained recognition for its reliability and performance in various industrial applications. Designed primarily for the industrial automation sector, this product offers robust connectivity and data transmission capabilities over Wi-Fi networks.

One of the standout features of the Quatech 802.11B/G is its compliance with the IEEE 802.11b and 802.11g standards. This ensures compatibility with a wide range of devices, enabling seamless integration into existing networks. The device supports data rates of up to 54 Mbps in the 802.11g mode, which is essential for applications that require quick and efficient data transfer.

In terms of technology, Quatech employs advanced wireless communication protocols that ensure a stable connection and minimize data loss. This is particularly important in industrial settings, where interruptions can result in costly downtime. The device utilizes error correction and encryption techniques to maintain the integrity and security of data being transmitted over the air.

Another important characteristic of the Quatech 802.11B/G is its operational range. The device can maintain a reliable connection across a significant distance, depending on the environmental conditions. This feature is crucial for applications that involve monitoring and control in large facilities, warehouses, or outdoor settings.

Power consumption is another critical aspect of the Quatech 802.11B/G design. The device is engineered for energy efficiency, making it suitable for applications where power resources may be limited. This feature allows for extended operational life in battery-powered devices without sacrificing performance.

The Quatech 802.11B/G is also equipped with multiple interfaces, including serial and Ethernet ports, facilitating easy connectivity with a wide array of devices. This versatility supports integration with various industrial equipment, sensors, and controllers, making the device highly adaptable to different environments.

Furthermore, the Quatech 802.11B/G is designed with durability in mind. It is built to withstand harsh conditions typical of industrial settings, ensuring long-lasting functionality and reducing the need for frequent maintenance or replacements.

In conclusion, the Quatech 802.11B/G offers a reliable and efficient wireless connectivity solution for industrial applications. Its compliance with industry standards, advanced communication protocols, extensive operational range, energy efficiency, and robust design make it a preferred choice for businesses looking to enhance their operational capabilities.