A &amp;#x2212;189 dBc/Hz FOM&lt;inf&gt;T&lt;/inf&gt; wide tuning range Ka-band VCO using tunable negative capacitance and inductance redistribution

Wu, Qun; Elabd, Salma; Quach, T.; Mattamana, Aji; Dooley, Steve; McCue, Jamin J.; Orlando, P.; Creech, G.L.; Khalil, Waleed

doi:10.1109/rfic.2013.6569560

Cited by 14 publications

(16 citation statements)

References 3 publications

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“…Compared with other works, the proposed VCO exhibits the lowest phase noise, lowest FOM T together with [3] and a comparable tuning range.…”

Section: Resultsmentioning

confidence: 81%

“…Fabricated in a standard 90-nm CMOS process, the chip core area is 0.38 mm×0.24 mm. Measurements show that the proposed VCO can be fully functional in a wide tuning range of 20.1 % at 28 GHz and a low phase noise from −96.2 dBc/Hz to −105.47 dBc/Hz at 1-MHz offset; meanwhile, a lowest FOM T together with [3] is achieved according to the Table 1. Moreover, the proposed VCO has a competitive power consumption of 12.6 mW.…”

Section: Discussionmentioning

confidence: 91%

“…To obtain high oscillating frequency, LC-based VCOs are usually adopted [1][2][3], which requires much lower power consumption compared with the ring VCOs. For a wide tuning range at mm-wave frequency, a variable inductor is commonly utilized to switch the operating frequency [1,2].…”

mentioning

confidence: 99%

“…However, a large layout area is usually required [2]. In [3], a tunable negative capacitance (TNC) circuit technique is proposed to cancel the fixed capacitance of the LC tank and extend the tuning range. In lowfrequency applications, a low phase noise is usually obtained by improving the Q-factor of the inductors [4][5][6].…”

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confidence: 99%

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A-189 dBc/Hz FoMT Wide Tuning Range VCO Using Q-Factor Enhancement Technique

Liu

Wang

et al. 2015

J Infrared Milli Terahz Waves

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A 28-GHz voltage-controlled oscillator (VCO) with a wide tuning range and a low phase noise is presented in this paper. A PMOS-only cross-coupled pair with a lower flicker noise is exploited to provide the negative resistance. The mechanisms for enhancing the Qfactor of the LC tank at millimeter-wave (mm-wave) frequencies are analyzed and applied to optimize the proposed VCO design to obtain a low phase noise. To guarantee accurate oscillating frequencies, distributed interconnections are carefully modeled by EM simulations. Fabricated in a standard 90-nm CMOS process, the proposed VCO achieves a wide tuning range of 20.1 %, from 25 to 30.66 GHz and a low phase noise of −105.47 dBc/Hz at 1-MHz offset. The current of the core circuit is 10.5 mA under a single 1.2-V supply. The core area of the chip is 0.38 mm×0.24 mm.

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“…Compared with other works, the proposed VCO exhibits the lowest phase noise, lowest FOM T together with [3] and a comparable tuning range.…”

Section: Resultsmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 91%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

A-189 dBc/Hz FoMT Wide Tuning Range VCO Using Q-Factor Enhancement Technique

Liu

Wang

et al. 2015

J Infrared Milli Terahz Waves

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show abstract

“…Across all CMOS technologies, there are fundamental challenges that still remain as major limiting factors in the mmwave VCO performance [14][15][16][17][18][19]. Foremost, the quality factor (Q) of the capacitive tuning elements is sharply degrading with frequency, and hence becomes the predominant factor in the overall tank Q.…”

Section: Introductionmentioning

confidence: 99%

Impact of technology scaling on the tuning range and phase noise of mm-wave CMOS LC-VCOs

Elabd

Khalil

2016

Integration

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A 40‐GHz hybrid class‐AB/class‐BCMOSVCO with a current‐combining transformer

Kim

Jang

Hong

2018

Micro & Optical Tech Letters

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A 40‐GHz hybrid class‐AB/class‐B CMOS VCO with a current‐combining transformer (CCT) using a 65‐nm RF CMOS process is presented. The hybrid class‐AB/class‐B configuration is adapted to two cross‐coupled pairs to lower the power consumption while maintaining the phase noise performance. As a simple coupling network between two cross‐coupled pairs with different bias conditions, the CCT performs the roles of a high Q‐factor resonator, a large impedance transformer, and a buffer without additional circuitry. The VCO operates at 38.15–40 GHz with power consumption in the range of 11–13 mW. The measured phase noise at a 1‐MHz offset from the 40 GHz carrier is −117.1 dBc/Hz with a 1.0 V supply voltage. The proposed power oscillator achieves an FOMT value of −191.3 dBc/Hz.

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A −189 dBc/Hz FOM<inf>T</inf> wide tuning range Ka-band VCO using tunable negative capacitance and inductance redistribution

Cited by 14 publications

References 3 publications

A-189 dBc/Hz FoMT Wide Tuning Range VCO Using Q-Factor Enhancement Technique

A-189 dBc/Hz FoMT Wide Tuning Range VCO Using Q-Factor Enhancement Technique

Impact of technology scaling on the tuning range and phase noise of mm-wave CMOS LC-VCOs

A 40‐GHz hybrid class‐AB/class‐BCMOSVCO with a current‐combining transformer

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