High Performance Resonant Tunneling Diode Oscillators for THz Applications

Wang, Jue; Alharbi, Khalid; Ofiare, Afesomeh; Zhou, Haiping; Khalid, Ata; Cumming, David R. S.; Wasige, Edward

doi:10.1109/csics.2015.7314509

Cited by 27 publications

(33 citation statements)

References 10 publications

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“…Using this approach, 28 GHz and 76 GHz InP-based RTD oscillators with around 1 mW were realized [13], [14]. Thereafter, D-band oscillators operating at 125 GHz, 156 GHz and 166 GHz, with output power of 0.34 mW, 0.24 mW, 0.17 mW, respectively, were also demonstrated [15]. These oscillators used a shorted coplanar waveguide (CPW) lines of characteristic impedance (Z o ) of 50 Ω to realize the inductances required to resonate with the device self-capacitance for a given target oscillation frequency.…”

Section: Introductionmentioning

confidence: 99%

High performance microstrip resonant tunneling diode oscillators as terahertz sources

Wasige

Al-Khalidi

Alharbi

et al. 2016

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)

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Section: Introductionmentioning

confidence: 99%

High performance microstrip resonant tunneling diode oscillators as terahertz sources

Wasige

Al-Khalidi

Alharbi

et al. 2016

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)

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“…As a result, a lot of work has been done by both industry and academia to develop terahertz communications [1], [2]. Resonant tunnelling diodes (RTDs) have been demonstrated to work as compact sources at room temperatures in the terahertz and sub-terahertz band [3]- [5]. RTD's therefore have the potential to make sub-Terahertz communications feasible if successfully coupled to antennas.…”

Section: Introductionmentioning

confidence: 99%

Slot-ring multiport driven antenna with improved airside radiation for terahertz communications

Kgwadi

Alharbi

Wang

et al. 2016

2016 46th European Microwave Conference (EuMC)

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Abstract-A slot-ring multiport driven (MPD) antenna is evaluated for operation in the terahertz band with emphasis on air-side radiation on a thick Indium Phosphide (InP) substrate. Geometrical modification to the known slot-ring are made by employing a circular outer ground and a backing ground plane to focus the radiation in the airside direction. Optimization of the modified structure is made to find the optimal size of the upper ground plane. The optimal design achieves maximum directivity of 10.8 dB which is an improvement of 3 dB from the original design. Moreover, the radiation is directed in the airside direction with a front-to-back lobe ratio of 14 dB. The slot-ring antenna design is verified by fabrication at 5 GHz and achieves 10.2 dB directivity.

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“…Lower JP designs as those used in mm-wave oscillators [23][24][25] , on the other hand, employ large micro-sized RTD devices and so can provide high RF power in oscillator circuits due to the increased ∆I, do not suffer thermal stability issues and can be fabricated with photolithography. Such devices employ thicker barrier layers (>1.4 nm).…”

Section: Device Design Considerationsmentioning

confidence: 99%

“…Using this approach, 28 GHz and 76 GHz InP-based RTD oscillators with around 1 mW were realized 23,24 . Thereafter, D-band oscillators operating at 125 GHz, 156 GHz and 166 GHz, with output power of 0.34 mW, 0.24 mW, 0.17 mW, respectively, were also demonstrated 25 . These oscillators used shorted coplanar waveguide (CPW) lines of characteristic impedance (Z0) 50 Ω to realise the inductances required to resonate with the device self-capacitance for a given target oscillation frequency.…”

Section: Introductionmentioning

confidence: 99%

Resonant tunnelling diode terahertz sources for broadband wireless communications

et al. 2017

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This paper will discuss resonant tunnelling diode (RTD) sources being developed on a European project iBROW (ibrow.project.eu) to enable short-range multi-gigabit wireless links and microwave-photonic interfaces for seamless links to the optical fibre backbone network. The practically relevant output powers are at least 10 mW at 90 GHz, 5 mW at 160 GHz and 1 mW at 300 GHz and simulation and some experimental results show that these are feasible in RTD technology. To date, 75 -315 GHz indium phosphide (InP) based RTD oscillators with relatively high output powers in the 0.5 -1.1 mW range have been demonstrated on the project. They are realised in various circuit topologies including those that use a single RTD device, 2 RTD devices and up to 4 RTD devices for increasingly higher output power. The oscillators are realised using only photolithography by taking advantage of the large micron-sized but broadband RTD devices. The paper will also describe properties of RTD devices as photo-detectors which makes this a unified technology that can be integrated into both ends of a wireless link, namely consumer portable devices and fibre-optic supported base-stations (since integration with laser diodes is also possible).

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High Performance Resonant Tunneling Diode Oscillators for THz Applications

Cited by 27 publications

References 10 publications

High performance microstrip resonant tunneling diode oscillators as terahertz sources

High performance microstrip resonant tunneling diode oscillators as terahertz sources

Slot-ring multiport driven antenna with improved airside radiation for terahertz communications

Resonant tunnelling diode terahertz sources for broadband wireless communications

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