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400MHz RF transceiver geared for wireless smart energy apps

Posted: 26 Feb 2014 ?? ?Print Version ?Bookmark and Share

Keywords:RF transceiver? smart energy management? industrial monitoring?

A*STAR Institute of Microelectronics (IME) and Cubic Micro have developed and demonstrated a 400MHz radio frequency (RF) transceiver that claims to offer the highest power efficiency to deliver high quality signals over the industry's widest coverage in wireless sensor network applications.

The transceiver is integrated with a highly configurable base band that enables users to customise transceiver performance for specific applications ranging from wireless smart energy management and security control in homes and buildings to long-range remote industrial monitoring.

To achieve low power consumption in RF transceiver, performance is typically sacrificed, resulting in degradations of sensitivity, channel selectivity and interference immunity during the wireless signal communication process.

400MHz RF transceiver geared for wireless smart energy apps

Figure 1: Photomicrograph of 400MHz low power wireless transceiver (left). Evaluation board for the transceiver IC (right). Source: A*STAR IME

To address the performance and power consumption dilemma, the IME team has employed a low-power low-noise linear RF chain and a 75dB-dynamic-range band-pass ADC so that channel filtering is conducted in the low-power digital circuits. This strategy cuts energy consumption by up to 55 per cent while providing unprecedented wireless communication range that supports highest reported sensitivity along with excellent selectivity compared to commercially available transceiver chips. These features translate into fewer sensor nodes to achieve similar network coverage in a wireless sensor network, further reducing costs and power consumption.

The design is amenable to mass production and is compatible with both Japanese standards, while also meeting the emission limits of Europe and US.

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