| Presentation | 2012-06-29 Maximum Available Q Factor (MAQ) Theory for Transmission-Line Feedback FET Oscillators Tuya WURENT, Takanari MINAMI, Sonshu SAKIHARA, Naoki SAKAI, Takashi OHIRA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents maximum available Q factor (MAQ) for an FET oscillator employing a simple half wave length transmission-line as its feedback network. We analytically describe the derivation of oscillation condition and the stability criterion for the oscillator, and deduce the MAQ formula in terms of voltage gamμ = gm/gd. Transmission line loss al is taken into account as well as gm, gd and μ in all analyses. The resultant formula and data show that the oscillation is unconditionally stable once the oscillation condition is satisfied. The oscillator shows higher Q factor for smaller gd. On the other hand gm decreases with gd for constant μ. Therefore a too small gm leads oscillation to cease. Resultant data clarify the transmission line and FET parameters dependence of the MAQ. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | FET Oscillator / Q factor / transmission line |
| Paper # | MW2012-18 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2012/6/22(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Maximum Available Q Factor (MAQ) Theory for Transmission-Line Feedback FET Oscillators |
| Sub Title (in English) | |
| Keyword(1) | FET Oscillator |
| Keyword(2) | Q factor |
| Keyword(3) | transmission line |
| 1st Author's Name | Tuya WURENT |
| 1st Author's Affiliation | Toyohashi University of Technology, Electrical and Electronic Information Engineering() |
| 2nd Author's Name | Takanari MINAMI |
| 2nd Author's Affiliation | Toyohashi University of Technology, Department of Electrical and Electronic Information Engineering |
| 3rd Author's Name | Sonshu SAKIHARA |
| 3rd Author's Affiliation | Toyohashi University of Technology, Department of Electrical and Electronic Information Engineering |
| 4th Author's Name | Naoki SAKAI |
| 4th Author's Affiliation | Toyohashi University of Technology, Department of Electrical and Electronic Information Engineering |
| 5th Author's Name | Takashi OHIRA |
| 5th Author's Affiliation | Toyohashi University of Technology, Electrical and Electronic Information Engineering |
| Date | 2012-06-29 |
| Paper # | MW2012-18 |
| Volume (vol) | vol.112 |
| Number (no) | 109 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |