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A WR-3 Band Fundamental Voltage-Controlled Oscillator With a Wide Frequency Tuning Range and High Output Power.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Jul2019, Vol. 67 Issue 7, p2759-2768. 10p. - Publication Year :
- 2019
-
Abstract
- This paper presents a 300-GHz voltage-controlled oscillator (VCO) with a wide frequency tuning range and high output power. To generate fundamental oscillation at 300 GHz, a cascode cross-coupled pair is employed as a VCO core instead of a conventional common-emitter pair. Capacitive emitter degeneration is added to the VCO core to achieve a wide bandwidth of a negative conductance. In addition, the phase of the oscillation feedback loop is analyzed and optimized to further extend the tuning range. The VCO is fabricated in a 0.25- $\mu \text{m}$ InP DHBT technology ($f_{\mathrm {T}}/f_{\mathrm {max}} = 392$ /859 GHz). Measurements show that the VCO frequency is tuned from 272.4 to 310.8 GHz with a peak output power of 1.5 dBm. To the best of authors’ knowledge, this is the widest tuning range of 38.4 GHz (a fractional bandwidth of 13.2%) among the reported fundamental VCOs at the WR-3 band. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 67
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 137295178
- Full Text :
- https://doi.org/10.1109/TMTT.2019.2916836