Second Harmonic Extraction of Planar Gunn Diode by Using Resonators for Mill Metric Wave Applications

Maricar, M. I., Khalid, A. , Cumming, D.R.S. and Oxley, C.H. (2014) Second Harmonic Extraction of Planar Gunn Diode by Using Resonators for Mill Metric Wave Applications. ARMMS: RF and Microwave Society Conference, Wyboston Lakes, Bedfordshire, UK, 17-18 Nov 2014.

Maricar, M. I., Khalid, A. , Cumming, D.R.S. and Oxley, C.H. (2014) Second Harmonic Extraction of Planar Gunn Diode by Using Resonators for Mill Metric Wave Applications. ARMMS: RF and Microwave Society Conference, Wyboston Lakes, Bedfordshire, UK, 17-18 Nov 2014.

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Abstract

Indium gallium arsenide (InGaAs) planar Gunn diodes with on chip matching circuits were fabricated on a semi-insulating Indium phosphides (InP) substrate. Radial and diamond stub resonators were used as circuit elements to suppress the fundamental frequency and allow the second harmonic frequency to be extracted from the planar Gunn diode. The extraction of the second harmonic will enable the planar Gunn diode to operate at millimetre wave and terahertz frequencies. InGaAs planar Gunn diodes were fabricated with an active channel length (anode to cathode separation) of 4 µm and a width of 120 µm. The experimental results gave a second harmonics signal at 118 GHz with an RF output power of -20 dBm for the radial stub resonator, and 121 GHz with an RF output power of -14.1 dBm for the diamond stub resonator. This is the highest second harmonic power recorded for a planar Gunn diode. The results indicate the potential of terahertz operation by reducing the channel length to sub-micron and extracting the second or third harmonic from the planar Gunn diode.

Item Type:Conference or Workshop Item
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Khalid, Dr Ata-ul-Habib
Authors: Maricar, M. I., Khalid, A., Cumming, D.R.S., and Oxley, C.H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering

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