Analog baseband LSI for SDR

5 March 2008 Telecoms, Datacoms, Wireless, IoT

NEC Electronics has announced the development of a reconfigurable analog baseband LSI for software defined radio (SDR). The newly developed LSI is capable of filtering unnecessary signals in the frequency range of 400 kHz to 30 MHz, allowing it to simultaneously support multiple wireless standards for existing and future mobile system standards such as mobile phone, broadcasting and wireless LAN systems. Boasting a small chip area of 0,57 mm², the LSI can also change the type of filter depending on the wireless standard. Conventionally, it has been difficult to incorporate SDR into mobile equipment since the existing SDR technology relied upon selective switching of transceiver devices, which resulted in a large mounting area of existing chips for each wireless standard. One of the key building blocks for the novel SDR transceivers is an analog baseband that includes tuneable filters. The new slim, compact LSI has been achieved by development of a pulse-width controlled reconfigurable filter for changing filter type and/or bandwidth.

www.necel.com

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