Wideband Colpitts voltage controlled oscillator with nanosecond start-up time for bubble-type motion detector

Shin, Im-Hyu; Kim, Dong-Wook

doi:10.1109/apmc.2013.6694908

Cited by 3 publications

(3 citation statements)

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“…With these ideas, bio-inspired concepts have also been used by microwaves engineers to design innovative bio-inspired antennas [7,8], which will draw upon the lessons learned from nature. Given the diversity of the animal and plant kingdoms, antenna bio-inspired design becomes a very promising design methodology to meet the requirements of modern wireless technologies.…”

Section: Introductionmentioning

confidence: 99%

“…The VCO with switchable‐inductive‐tuning method has achieved 14.2% FTR with ±2dB phase noise variation. For even wider FTR, the multiport LC‐ladder VCO with multiple operation modes may be used, each mode is only responsible for a part of the frequency range, large FTR more than 100% could be easily achieved by using this structure, a three‐port‐LC‐ladder resonator VCO with 158% actual frequency tuning range has been reported . The switch tuning VCO could be easily fulfilled by integrated circuit, but is not easy for non‐integrated VCOs since the complex structure.…”

Section: Introductionmentioning

confidence: 99%

“…Non‐integrated wide‐tuning‐range VCOs with advanced techniques have been researched. A VCO with a tunable substrate integrated waveguide (SIW) resonator shows both low phase noise (−109 dBc/Hz at 100 kHz offset) and wide FTR about 26% (1.7 GHz ∼ 2.2 GHz); a pulsed‐mode operation Colpitts VCO shows a FTR about 28% (7.2 GHz ∼ 9.5 GHz).…”

Section: Introductionmentioning

confidence: 99%

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A 1.12 GHz TO 2 GHz wide-tuning-range VCO with dynamic coupling structures

Yang

Wang

Zhang

et al. 2016

Microw. Opt. Technol. Lett.

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This paper presents a continuous wide‐tuning‐range VCO with 56.4% frequency tuning ratio (FTR). Both a dynamic coupling resonator structure and a dynamic feedback amplifying circuit are proposed to maintain the wide‐tuning range for the VCO. The dynamic coupling promises stable loaded Q factor and wider tuning range, while the dynamic feedback amplifying circuit assured the oscillating condition across the large frequency tuning range. There are three voltage tunable structures in the proposed, all of which are controlled by the same tuning voltage, so it is easy to be controlled and can be phase locked by a phase‐lock‐loop (PLL). The VCO results in a tuning range from 1.12 GHz to 2.00 GHz at 0 ∼ +5 V tuning voltage. The measured output power is 4.0 ∼ 6.37 dBm within the tuning range. The measured phase noise is −94.24 ∼ −98.66 dBc/Hz at 100 kHz frequency offset and −118.07 ∼ −123.41 dBc/Hz at 1 MHz frequency offset respectively within the tuning range. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1525–1529, 2016

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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