Design Note #77
Custom wireless 802.15.4 transceivers from OTEC operate in the 900MHz, and 2.4GHz frequency bands. Occupying 802.15.4 channels 1 through 27, wireless communications on these frequencies can be very useful for low bandwidth data telemetry.
IEEE 802.15.4 specifies a means of wireless data transmission. Application requirements can dictate actual data transmission protocols used. OTEC has developed protocol variations for beacon enabled and non-beacon enabled networks.
Wireless network topology may take varying forms: Star, mesh, store-and-for- ward, time slot enabled, and dynamic mesh are a few. Often a system can benefit from a hybrid design where a star-mesh topology most effectively routes data back to a central point.
Transmitter power, power amplifier, antenna cable, transmitter antenna gain, link distance and terrain, receiver antenna gain, receiver low noise preamplifier, receiver gain are the elements that comprise the radio frequency link budget. Reliable communications distance depends on properly considering each element that affects the link budget.
The development of custom electronic products for our OEM clients is OTEC’s entire business. The design of custom 802.15.4 wireless transceivers with rapid design cycles, demanding technical requirements, and unforgiving schedules sets us apart. Contact OTEC today!