Wireless data transmission of 30 Gbps at a 500-GHz range using resonant-tunneling-diode terahertz oscillator

2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)

Al-Khalidi

Zhang

et al. 2017

Section: B Rtd-pd Oscillatorsmentioning

confidence: 99%

Resonant tunneling diode as high speed optical/electronic transmitter

2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)

Al-Khalidi

Zhang

et al. 2017

“…Optical THz products have been available commercially [4][5][6][7], but they are expensive and bulky. Resonant tunneling diodes (RTDs) [8,9] are good candidates for electronic THz wave sources from the viewpoint of fabricating resonant tunneling diode oscillator (RTD oscillators). Resonant tunneling diode oscillators…”

Section: Introductionmentioning

confidence: 99%

Resonant Tunneling Diode (RTD) Terahertz Active Transmission Line Oscillator with Graphene-Plasma Wave and Two Graphene Antennas

et al. 2019

This study describes the design of a resonant tunneling diode (RTD) oscillator (RTD oscillator) with a RTD-gated-graphene-2DEF (two dimensional electron fluid) and demonstrates the functioning of this RTD oscillator through a transmission line simulation model. Impedance of the RTD oscillator changes periodically when physical dimension of the device is of considerable fraction of the electrical wavelength. As long as impedance matching is achieved, the oscillation frequency is not limited by the size of the device. An RTD oscillator with a graphene film and negative differential resistance (NDR) will produce power amplification. The positive electrode of the DC power supply is modified and designed as an antenna. So, the reflected power can also be radiated to increase RTD oscillator output power. The output analysis shows that through the optimization of the antenna structure, it is possible to increase the RTD oscillator output to 22 mW at 1.9 THz and 20 mW at 6.1 THz respectively. Furthermore, the RTD oscillator has the potential to oscillate at 50 THz with a matching antenna.

“…High peak current density, >600 kA/cm 2 , RTD epitaxial designs were used. The transmitter frequency was 490 GHz with 26~60 μW output power [5] [6]. Due to the high dielectric constant of the substrate, the radiated power is directed mostly in the substrate and is therefore extracted from the substrate backside through a Si-collimation lens.…”

Section: Introductionmentioning

confidence: 99%

15-Gb/s 50-cm Wireless Link Using a High-Power Compact III–V 84-GHz Transmitter

Al-Khalidi

IEEE Trans. Microwave Theory Techn.

et al. 2018

The paper reports on a 15 Gbps wireless link that employs a high power resonant tunneling diode (RTD) oscillator as a transmitter. The fundamental carrier frequency is 84 GHz and the maximum output power is 2 mW without any power amplifier. The reported performance is over a 50 cm link, with simple amplitude shift keying (ASK) modulation utilized. The 15 Gbps data link shows correctable bit error rate (BER) of 4.1×10-3 , while lower data rates of 10 Gbps and 5 Gbps shows BER of 3.6×10-4 and 1.0×10-6 , respectively. These results demonstrate that the RTD transmitter is a promising candidate for the next generation low cost, compact, ultra-high data rates wireless communication systems. Index Terms-resonant tunneling diode, wireless communication systems, amplitude shift keying, oscillator, high power transmitter.