Analysis of Relaxation Oscillation in a Resonant Tunneling Diode Integrated with a Bow-Tie Antenna

Naoto OKUMURA  Kiyoto ASAKAWA  Michihiko SUHARA  

IEICE TRANSACTIONS on Electronics   Vol.E100-C   No.5   pp.430-438
Publication Date: 2017/05/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E100.C.430
Type of Manuscript: Special Section PAPER (Special Section on Fundamentals and Applications of Advanced Semiconductor Devices)
resonant tunneling diode,  relaxation oscillation,  integrated antenna,  nonlinear analysis,  Voigt function,  Van der Pol equation,  Liénard equation,  

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In general, tunnel diodes exhibit various types of oscillation mode: the sinusoidal mode or the nonsinusoidal mode which is known as the relaxation oscillation (RO) mode. We derive a condition for generating the RO in resonant tunneling diodes (RTDs) with essential components for equivalent circuit model. A conditional equation to obtain sufficient nonlinearity towards the robust RO is clarified. Moreover, its condition also can be applied in case of a bow-tie antenna integrated RTD, thus a design policy to utilize the RO region for the antenna integrated RTD is established by numerical evaluations of time-domain large-signal nonlinear analysis towards a terahertz transmitter for broadband wireless communications.