A four-path 60GHz phased-array receiver with injection-locked LO, hybrid beamforming and analog baseband section in 90nm CMOS

Raczkowski, Kuba; Mangraviti, Giovanni; Szortyka, Viki; Spagnolo, Annachiara; Parvais, B.; Vandebriel, Roeland; Vidojkovic, Vojkan; Soens, Charlotte; D'Amico, S.; Wambacq, Piet

doi:10.1109/rfic.2012.6242315

Cited by 5 publications

(4 citation statements)

References 9 publications

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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%

“…1(e) when is zero. 4 The detection of this relative minimum can be implemented through a simple envelope detector.…”

Section: Frequency Tuningmentioning

confidence: 99%

“…4 The amplitude of is assumed to be proportional to . This condition is fulfilled for the current-limited operation regime.…”

Section: Frequency Tuningmentioning

confidence: 99%

“…phased-array transceivers with phase shifting at baseband [4] or in the LO path [1], [4], where the LO signal has to be distributed to all the antenna front-ends of the phased array. In these cases, the mm-wave subharmonically injection-locked oscillators (SHILOs) can be positioned close to the mixers of each antenna front-end.…”

mentioning

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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