ADI claims power, BoM advances for transceivers

LONDON — Analog Devices Inc. has started sampling RF transceivers to support 4G picocell and microcell basestations that it claims could reduce power consumption and bill of material costs by 50 percent.

The AD9356 and AD9357 RF-to-digital baseband transceivers are targeted at OEMS building gear for LTE and WiMAX networks.

The transceivers integrate 12bit ADCs, DACs, RF receive and transmit signal chains, and on chip frequency synthesizers. They combine to support beam forming applications and include two complete receivers, as well as two complete transmitters for the support of MIMO deployments.

The transmitter's signal to noise ratio provides support for picocells and microcells from 13 to 36dBm output power at the antenna port, while designers can optimize receiver performance by configuring the transceivers to use an on chip automatic gain control algorithm.

The transceivers support frequency ranges from 2.3GHz to 2.7GHz and 3.3GHz to 3.8 GHz respectively, covering existing WiMAX bands and channel bandwidths.

Tom Gratzek, product line director for ADI's WiMAX Transceiver Group, said: “Today's WiMAX and LTE infrastructure equipment generally rely on a multitude of discrete components, often exceeding power budgets while missing time to market goals. Typical picocell base station transceivers comprise six to eight active components, while microcell base stations can easily require double this component count.”

Gratzek asserts that designs that integrate the latest ADI devices “can reduce the component count for a 2 x 2 transceiver to a single device, while cutting power consumption by at least 50 percent.”

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