NRD-GuideOver 1Gbps Wireless at 60 Ghz

Tsukasa Yoneyama

Environmental Information Engineering

Tohoku Institute of Technology

Key Word ： NRD-Guide （ Nonradiative Dielectric Waveguide ）

Typical Printed Transmission Lines

Microstrip Line

Slot Line

Coplanar Waveguide

(a) Below Cutoff (b) Still Below Cutoff (c) Nonradaiative

a

b

EEE

a a

Operation Principle of NRD-Guide

a<λ/2

Nonradiative Dielectric Waveguide

Transmission Loss of NRD-Guide

NRD-Guide Bend with the Minimum Radius of Curvature at 50GHz

Waveguides for Respective Frequency Regions

Optical Fiber for

Light Waves

Microstripline forMicrowaves

NRD-Guide forMillimeter-Waves

Transmitted Signal

Received　Signal

Transmitted Signal

Received　Signal

TransmittedSignal

ReceivedSignal

TransmittedSignal

ReceivedSignal

Transmitted Signal

Received　Signal

LNA

PA

LNA

PA

LNA

PA

LNA

PA

Transmitted Signal

Received　Signal

TransmittedSignal

ReceivedSignal

TransmittedSignal

ReceivedSignal

(a)　 Conventional Type of Transceiver

(b)　 NRD-Guide Transceiver

Transmitter

Receiver Antenna

3dB Coupler

Gunn Diode

NRD-Guide Transceiver Using Switch

Switch

SB Diodes

Switchless NRD-Guide Transceiver

3dBCoupler

　　　　 Antenna

Gunn Diode

SB Diodes

IF Signal

Tx Signal

New Type of NRD-GuideSwitchless Transceiver

Old Type of NRD-guideTransceiver with Circulator

Typical Performance of Transceiver

Bit Error Rate 1.5Gbps ,PRBS15, 　 Time Duration:30min.

Transmitted and ReceivedPulse Trains（ 1.25Gbps）

Image of HomeLink

Broadcasting Satellite

Communication

Satellite

Terrestrial

Broadcasting

(V/UHF)

Liquid Crystal

Display

HDTVProjector

NRD GuideTransceiver

Conclusions

1.　 Small volume, a wide variety of products is possible with 　　　　 NRD-guide.

2.　 Data transmission rate of 1.5Gbps has been realized with NRD-guide.

3.　 HDTV transmission has been demonstrated with NRD-guide.

4.　 Simple, compact, high-performance transceiver has been fabricated with NRD-guide.

5.　 Replacement of MMIC is possible with NRD-guide.

6. Market appearance of NRD-guide will be soon.