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Investigation of SIW‐based planar integrated w‐band low‐phase noise Gunn harmonic oscillator
Author(s) -
Liu Yong,
Tang Xiaohong,
Wu Tao
Publication year - 2011
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26002
Subject(s) - gunn diode , phase noise , planar , optoelectronics , dbc , resonator , microwave , noise temperature , harmonic mixer , local oscillator , vackář oscillator , materials science , electrical engineering , diode , engineering , telecommunications , computer science , computer graphics (images)
Based on the substrate integrated waveguide (SIW) technology, the influence of SIW cavity on phase noise of W‐band oscillator is studied and a novel W‐band low phase noise GaAs Gunn planar harmonic oscillator is developed in this letter. The technique of harmonic extraction from Gunn diodes and the novel SIW cavity structure with short piston, which is introduced to study the influence of SIW cavity on phase noise of oscillator, are discussed in detail. Because of the high quality factor and planar structure of the SIW cavity resonator, the oscillator is characterized by some advantages such as low phase noise, small size, low cost and planar integration. The optimal phase noise is −105.81 dBc/Hz at 1 MHz offset 92.16 GHz carrier frequency and the measured output power is more than 6.2 dBm. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1239–1242, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26002