NICT Develops IEEE802.15.3c-compatible Millimeter-wave Transceiver Chip

Dec 7, 2010
Hiroki Yomogita, Nikkei Electronics
The newly-developed chip
The newly-developed chip
[Click to enlarge image]
The internal structure of the chip
The internal structure of the chip
[Click to enlarge image]
The exterior of the chip
The exterior of the chip
[Click to enlarge image]

Japan's National Institute of Information and Communications Technology (NICT) developed an RF transceiver chip for millimeter-wave wireless communication in the frequency band of 60GHz.

It complies with the IEEE802.15.3c short-range high-speed wireless standard, which was internationally standardized by the IEEE 802 committee, and has a transmission rate of higher than 3.5Gbps. NICT will announce the details of the chip at the Technical Committee on Short Range Wireless Communications of the Institute of Electronics, Information and Communication Engineers (IEICE), which will take place Dec 8, 2010, in Tokyo.

The chip was designed by using a 65nm CMOS technology and can realize a 60GHz transceiver function with one chip. The design has a high linearity so that the chip can support not only multicarrier transmission with IEEE802.15.3c-compatible OFDM (orthogonal frequency division multiplexing) but also single-carrier transmission.

The chip can use four channels with center frequencies of 58.32GHz, 60.48GHz, 62.64GHz and 64.80GHz. It uses the n/2 shift QPSK (quadrature phase shift keying) for primary modulation and can transmit data at a rate of 3.52Gbps.

Furthermore, NICT predicts that with a low output power, short-range application, it is possible to ensure a data transmission rate of up to 5.28Gbps by using the n/2 shift 16QAM (quadrature amplitude modulation) for primary modulation and LDPC (low density parity check codes) for error correction.

The size of the prototyped chip is 4.2 x 4.2mm. Its maximum power consumption is 946.8mW for transmission and 856.1mW for reception. The power supply voltage is 3.3V and 1.2V. The chip can be used for IEEE802.11ad, which is now being designed as a next-generation wireless LAN standard.