A 52&amp;#x2013;66GHz subharmonically injection-locked quadrature oscillator with 10GHz locking range in 40nm LP CMOS

Mangraviti, Giovanni; Parvais, B.; Vidojkovic, Vojkan; Vaesen, Kristof; Szortyka, Viki; Khalaf, Khaled; Soens, Charlotte; Vandersteen, Gerd; Wambacq, Piet

doi:10.1109/rfic.2012.6242288

Cited by 16 publications

(16 citation statements)

References 6 publications

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“…4, is finally chosen to be around 0.45 in our work, thus a continuous tuning range is achieved and the resonant impedances at both modes are roughly equal and both are boosted compared with that of the conventional LC resonators. Now the oscillation condition can be derived using the expressions of the effective [see (13), (14), (16), and (17)] and the expressions of the resonant impedance [see (18) and (19)]. When the proposed VCO works at the even mode, the effective should be strong enough to compensate the energy loss of the resonator at the even-mode resonant frequency.…”

Section: B Oscillation Conditionmentioning

confidence: 99%

A 47.6–71.0-GHz 65-nm CMOS VCO Based on Magnetically Coupled $\pi $-Type LC Network

Jia

Chi

Kuang

et al. 2015

IEEE Trans. Microwave Theory Techn.

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A wide tuning range millimeter-wave voltage-controlled oscillator (VCO) based on a magnetically coupled -type LC network in 65-nm CMOS is proposed. By configuring the switched negative-resistance unit, the VCO can oscillate at the even mode or the odd mode of the magnetically coupled -type LC network, thus the tuning range is widened without introducing the switch loss into the resonator. The proposed VCO achieves a measured continuous tuning range of 39%, from 47.6 to 71.0 GHz. The measured phase noise for a 47.6-GHz carrier at the even mode and 56.2-GHz carrier at the odd mode are 110.3 and 107.3 dBc/Hz at 10-MHz offset with a corresponding of 185.5 and 183.9 dBc/Hz, respectively. The measured phase noise in the whole frequency tuning range varies from 101.7 to 113.4 dBc/Hz at 10-MHz offset, while the corresponding figure-of-merit (FOM) and vary from 167.8 to 179.0 dB and 179.6 to 190.6 dB, respectively. The VCO core consumes 8.9-10.4-mA current from 1.0-V power supply and 320 230 m die area.

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Section: B Oscillation Conditionmentioning

confidence: 99%

A 47.6–71.0-GHz 65-nm CMOS VCO Based on Magnetically Coupled $\pi $-Type LC Network

Jia

Chi

Kuang

et al. 2015

IEEE Trans. Microwave Theory Techn.

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“…Three kinds of resonators are used for the mm-wave LC-tank ILO: a single-LC tank [4] [7], a single-LC tank with a lowered [6], and a coupled-LC tank [9]. A comparison of these three approaches, in terms of published solutions, is available in [9].…”

Section: Comparison With Single-lc-tank Approachmentioning

confidence: 99%

“…A comparison of these three approaches, in terms of published solutions, is available in [9]. These three approaches are theoretically compared in Fig.…”

Section: Comparison With Single-lc-tank Approachmentioning

confidence: 99%

“…The active core of this system differs from the active core of the SHIL-QVCO in [9]. The most significant difference is that the cross-coupled MOSFET pair has the source terminals directly grounded instead of being source degenerated.…”

Section: Shil-qvco Designmentioning

confidence: 99%

“…The LR of the mm-wave SHILO can be considerably enlarged by means of coupled-LC tanks [9], [10]. This can be achieved by designing the coupled-LC tank such that the phase of the tank impedance is close to zero over a large frequency range.…”

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confidence: 99%

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Design and Tuning of Coupled-LC mm-Wave Subharmonically Injection-Locked Oscillators

Mangraviti

Khalaf

Parvais

et al. 2015

IEEE Trans. Microwave Theory Techn.

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This paper analyzes and demonstrates the use of coupled-LC tanks to enlarge the locking range (LR) of millimeter-wave (mm-wave) subharmonically injection-locked oscillators. Design guidelines are derived from a simplified analysis. Different techniques are proposed to tune the coupled-LC tank. A mm-wave subharmonically injection-locked quadrature voltage-controlled oscillator in 40-nm CMOS verifies the proposed approach. The LR is larger than 2 GHz over a 55-63-GHz tuning range. An on-chip envelope detector facilitates the tuning of the coupled-LC tank. The phase noise and the quadrature-phase imbalance are uniform over almost the whole LR.Index Terms-Coupled resonator, injection-locked oscillator (ILO), locking range (LR), millimeter-wave (mm-wave) circuits, 60 GHz, subharmonic injection locking.

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A V‐band frequency quadrupler using subharmonic injection‐locked oscillator with push–push technique

Zhang

Chou

Huang

2014

Micro & Optical Tech Letters

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A novel UWB antenna with a new design approach within a very compact size is presented and its characteristics are investigated. The Minkowski like fractal structure at the edges of octagonal structure helps to obtain the compact dimensions of 13.5 3 16.5 mm 2 . The application of Minkowski like fractal geometry increases the effective length and miniaturizes the antenna size drastically. Further modification in the ground plane by introducing multiple notches generates additional resonance at lower operating frequency and disperses surface current due to the generation of new path, which helps to obtain the desired UWB frequency band 3.1-10.6 GHz. This design approach provides a solution for wideband compact antenna. This miniaturization reduces the fabrication cost, and thus offering an appropriate choice for its applications in wireless devices, body area network, and so forth.

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A 52–66GHz subharmonically injection-locked quadrature oscillator with 10GHz locking range in 40nm LP CMOS

Cited by 16 publications

References 6 publications

A 47.6–71.0-GHz 65-nm CMOS VCO Based on Magnetically Coupled $\pi $-Type LC Network

A 47.6–71.0-GHz 65-nm CMOS VCO Based on Magnetically Coupled $\pi $-Type LC Network

Design and Tuning of Coupled-LC mm-Wave Subharmonically Injection-Locked Oscillators

A V‐band frequency quadrupler using subharmonic injection‐locked oscillator with push–push technique

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