Superconducting quantum devices

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Broadband Dual-Mode Dielectric Resonator Filters

Institute of Electrical and Electronics Engineers (IEEE) 00 (2018) 1-3

Authors:

Mustafa S Bakr, Ian C Hunter, Wolfgang Bosch
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Hierarchical quantum classifiers

(2018)

Authors:

Edward Grant, Marcello Benedetti, Shuxiang Cao, Andrew Hallam, Joshua Lockhart, Vid Stojevic, Andrew G Green, Simone Severini
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A Compact Half-Mode Substrate Integrated Waveguide Filter Based on a Circular Resonator

Institute of Electrical and Electronics Engineers (IEEE) (2018) 131-133

Authors:

Ahmad Bader Alothman Alterkawi, Mustafa S Bakr, Reinhard Teschl, Wolfgang Bösch, Maurizio Bozzi
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Isolation Enhancement between Two Closely Spaced Rectangular Patches for MIMO Applications

Institution of Engineering and Technology (IET) (2018) 791 (3 pp.)-791 (3 pp.)

Authors:

AI Hammoodi, MS Bakr, H Khaleel, M Milanova
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Reconfigurable Wilkinson power divider with unity to 8dB output power differences using one varactor diode

IET Conference Publications 2018:CP746 (2018)

Authors:

AH Ali, KW Hameed, NT Ali, MS Bakr, R Asif, RA Abd-Alhameed, NJ McEwan

Abstract:

A novel reconfigurable equal to unequal Wilkinson power divider is presented. The proposed power divider adopts coupled microstrip line technique to implement a high impedance section to have unequal output power ratio. A varactor diode is placed between the coupled lines to achieve reconfigurability by changing the reverse biasing voltage on the varactor diode. This enables equal to 8 dB power division ratios between the output ports. A wide range of biasing voltage is used to achieve the smooth power division ratio. A prototype hardware is designed, fabricated and measured to validate the proposed approach. In the equal power division ratio scenario, the measured performance shows a bandwidth of 600 MHz at 5.4 GHz centre frequency. A higher bandwidth of 750 MHz is obtained in the case of unequal power division ratios.