NTT Develops 15Gbps Milliwave Transceiver Module

Jan 20, 2012
Tetsuo Nozawa, Nikkei Electronics
The 60GHz waveband transceiver modules placed on the large metal boxes are used to transmit high-definition (HD) video data.
The 60GHz waveband transceiver modules placed on the large metal boxes are used to transmit high-definition (HD) video data.
[Click to enlarge image]
The transceiver module and antenna
The transceiver module and antenna
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A 12 x 12mm board for the "pseudo-reflection mirror-surface antenna"
A 12 x 12mm board for the "pseudo-reflection mirror-surface antenna"
[Click to enlarge image]
Wireless devices that are expected to be equipped with the transceiver module once the size of the module becomes equivalent to that of the antenna
Wireless devices that are expected to be equipped with the transceiver module once the size of the module becomes equivalent to that of the antenna
[Click to enlarge image]

Nippon Telegraph and Telephone (NTT) Corp developed a compact wireless transceiver module supporting all of the four communication channels that can be used in the 60GHz waveband.

The transmission range of the module is about 50cm. The maximum data transmission speed of each channel is 3.8Gbps (15Gbps when all of the four channels are used at the same time).

Technically, the module can be embedded in tablet computers and smartphones. Therefore, it is possible to download a large volume of data such as a movie to a smartphone in several to several tens of seconds just by placing the phone near a kiosk terminal.

High-speed version of TransferJet?

There has already been a wireless communication standard that enables to exchange data just by holding a smartphone, etc near a home appliance and so forth. It is Sony Corp's "TransferJet" short-range wireless standard, which is being employed for mobile machines. However, its maximum data transmission speed is 560Mbps.

"(With TransferJet,) it takes several minutes or more to transmit data stored in a Blu-ray disc," NTT said.

In a sense, the new wireless transceiver module was developed to drastically improve the data transmission speed of TransferJet.

The module measures 12 x 6 x 3cm.

"We intentionally made a large module to ensure extra space," the company said.

To develop the module, NTT employed an antenna made by using a multilayer LTCC (low temperature co-fired ceramics) board in addition to an MMIC (microwave monolithic integrated circuit) in the physical layer and increased the number of channels from two to four.

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