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NRD-Guide
Over 1Gbps Wireless at 60 Ghz
Key Word ： NRD-Guide（Nonradiative Dielectric Waveguide）
Tsukasa Yoneyama
Environmental Information Engineering
Tohoku Institute of Technology
Microstrip Line
Coplanar Waveguide
Slot Line
Typical Printed Transmission Lines
E
E
E
b
a
a<λ/2
a
(a) Below Cutoff
a
(b) Still Below Cutoff (c) Nonradaiative
Operation Principle of NRD-Guide
Nonradiative Dielectric Waveguide
Transmission Loss of NRD-Guide
NRD-Guide Bend with the Minimum Radius
of Curvature at 50GHz
NRD-Guide for
Millimeter-Waves
Optical Fiber for
Light Waves
Microstripline for
Microwaves
Waveguides for Respective Frequency Regions
Received Signal
LNA
PA
Transmitted Signal
(a) Conventional Type of Transceiver
Received
Signal
Transmitted
Signal
(b) NRD-Guide Transceiver
Gunn Diode
Switch
Transmitter
3dB Coupler
Antenna
Receiver
SB Diodes
NRD-Guide Transceiver Using Switch
Tx Signal
Gunn Diode
3dB
Coupler
Antenna
SB Diodes
IF Signal
Switchless NRD-Guide Transceiver
New Type of NRD-Guide
Switchless Transceiver
Old Type of NRD-guide
Transceiver with Circulator
Typical Performance of Transceiver
Transmitted and Received
Pulse Trains（1.25Gbps）
Bit Error Rate
1.5Gbps ,PRBS15,
Time Duration:30min.
Broadcasting Satellite
Communication
Satellite
Terrestrial
Broadcasting
(V/UHF)
NRD Guide
Transceiver
Liquid Crystal
Display
Projector
HDTV
Image of HomeLink
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.