Elsaadi, M, Steenson, DP, Robertson, ID et al. (1 more author) (2015) A 320GHz Low Drive Level Sub-harmonic Mixer Based on Quantum Barrier Junctions. In: 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 23-28 Aug 2015, Chinese University of Hong Kong. IEEE ISBN 978-1-4799-8272-1
Abstract
A sub-harmonically pumped (n=4) down conversion mixer, employing single quantum barrier junction in place of a Schottky pair, is designed and simulated using the symbolically defined device capability in ADS and transmission line optimisation using HFSS prior to fabrication. The performance in terms of conversion loss and LO power requirements are estimated and compared with state-of-the-art Schottky diode mixers. The intent was to explore a low drive level mixer with high conversion efficiency (minimum conversion loss) for potential use at sub-millimetre wave frequencies, where the device parasitic's, such as junction capacitance and series resistance have a marked effect on performance and where LO pump powers are often weak. The performance is explored via a design operating at 320GHz and showing a signal side band (SSB) conversion loss with 5.7dB, with only -9.5dBm (≈0.1mW) of LO power. The conversion loss is maintained below 10dB, even when using -8dBm to -11dBm of LO drive level, and the eventual aim of the work is to realize a similar design with an operating frequency of 640GHz for meteorological studies.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | Mixers, Schottky diodes, Junctions, Performance evaluation, Amplitude modulation, Receivers, Microstrip |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Nov 2016 15:55 |
Last Modified: | 22 Nov 2016 15:55 |
Published Version: | https://doi.org/10.1109/IRMMW-THz.2015.7327577 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/IRMMW-THz.2015.7327577 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106809 |