Get 60-GHz CMOS Phase-Locked Loops PDF

By Hammad M. Cheema, Reza Mahmoudi, Arthur H.M. van Roermund

ISBN-10: 904819279X

ISBN-13: 9789048192793

The promising excessive info price instant purposes at millimeter wave frequencies quite often and 60 GHz particularly have won a lot awareness lately. besides the fact that, demanding situations on the topic of circuit, format and measurements in the course of mm-wave CMOS IC layout need to be triumph over sooner than they could develop into possible for mass market.

60-GHz CMOS Phase-Locked Loops targeting phase-locked loops for 60 GHz instant transceivers elaborates those demanding situations and proposes options for them. The procedure point layout to circuit point implementation of the whole PLL, in addition to separate implementations of person parts akin to voltage managed oscillators, injection locked frequency dividers and their mixtures, are incorporated. moreover, to fulfill a few transceiver topologies concurrently, flexibility is brought within the PLL structure through the use of new dual-mode ILFDs and switchable VCOs, whereas reusing the low frequency elements on the similar time.

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Extra resources for 60-GHz CMOS Phase-Locked Loops

Example text

Secondly, the contribution of external elements like cables, probes and bond-pads has to be subtracted from the measurement data for which calibration and deembedding techniques are employed. 2. Lastly, the variation of measurements due to minor physical changes in the setup become more visible at these frequencies which may rise stability and repeatability issues. 3. 1 Layout Problems and Solutions The intermediate step between schematic-level design and actual fabrication of integrated circuits is the layout of active and passive components.

However, they are rarely used as loop stability becomes a serious concern. 2 Frequency Planning The frequency planning of the synthesizer is one of the initial steps in system design. 1, the frequency resolution, which is the minimum frequency step the synthesizer can generate, is determined. The frequency resolution is then used to determine other PLL system parameters in the next section. The frequency planning is treated in two steps. First, the required LO frequencies for the 40 GHz front-end are listed and next the 60 GHz PLL front-end is analyzed.

We define two types of cross-talk. First, inter-probe cross-talk due to capacitive or radiative coupling between two different probes and second intra-probe coupling due to mutual coupling between signal lines of the same probe. In addition to shielding and grounding techniques explained above, the inter-probe cross-talk is reduced by placing them sufficiently apart as suggested in their specifications. Furthermore, the grounding used around the pads minimizes the radiation to other probes. The intra-probe cross-talk is minimized by always utilizing probes having a ground pin between two signal pins.

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60-GHz CMOS Phase-Locked Loops by Hammad M. Cheema, Reza Mahmoudi, Arthur H.M. van Roermund

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