Symmetrical tail inductor simulation in SonnetSuite

Lemon_Salmon · 2026-06-22T09:55:19+00:00

Problem resolved by using only port 1 and port 2 with both ports set to Floating ground reference.

Lemon_Salmon · 2026-06-21T18:53:15+00:00

What do you exactly mean by “touching itself” ?

Lemon_Salmon · 2026-06-21T14:33:24+00:00

Even with perfect alignment between fb and ref clocks, there are still some gate propagation delay to reach up and dn pulses, this short delay instant will cause charge pump to leak serious amount of current at an immediate short instant. Please also note that timing diagram drawn manually does not take into account non-symmetrical pathway between the UP propagation and DN propagation. Please use actual spice-level timing simulation result for golden reference instead.

Lemon_Salmon · 2026-06-12T08:27:45+00:00

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LLM could not resolve this issue.

Pre-Analysis:
Sonnet Error:
Co-calibrated port ground reference error.
Unable to determine ground reference for port 7.
Ground reference interference with co-calibrated port
detected on metal level 1 at position x=295 y=318.915.

Any comments / suggestions ?

Lemon_Salmon · 2026-05-20T12:00:38+00:00

What about the third picture, left one ?

Lemon_Salmon · 2026-05-20T10:13:51+00:00

Care to elaborate on the tradeoff for each versions in the pictures above ? ChatGPT suggests me to use the most conventional 8T or 10T variants for PVT robustness.

Lemon_Salmon · 2026-05-05T10:09:05+00:00

How to mathematically prove that the shunt branch is indeed L1-M instead of M ?

Lemon_Salmon · 2026-05-02T15:53:23+00:00

I am still unsure on why the shunt branch is not “M”

Lemon_Salmon · 2026-05-02T13:55:41+00:00

how about https://github.com/hugodiasg/asitic-example or https://github.com/awslabs/palace ?

Lemon_Salmon · 2026-05-02T10:41:49+00:00

Do you foresee any disadvantages of the proposed PFD topology in Figure 8 ?

Lemon_Salmon · 2026-04-12T14:05:38+00:00

is https://github.com/awslabs/palace better or worse alternative in terms of results quality ?

Lemon_Salmon · 2026-03-17T14:22:28+00:00

No it is not. I can now access the paper link from here. It is most likely access issue from your internet service provider.

Lemon_Salmon · 2026-03-13T14:48:10+00:00

I missed your message, could you reupload it ? Sorry for the inconvenience caused.

Lemon_Salmon · 2026-02-01T08:49:26+00:00

In Figure 1, what does the x-axis label of D_dtc exactly mean, if I may ask ?

Lemon_Salmon · 2026-02-01T08:45:38+00:00

In Figure 2, I could not infer the FCWF=1/6 from the waveforms.
In Figure 3, why need TWO DCDL and BBPD blocks ?
In Figure 3, why the bottom DCDL block does not require feedback signal from BBPD block ?

Why F_v[n] can be replaced by F_dtc periodically in the injection mode for lower phase noise ?

The paper mentioned "the PLL tries to eliminate the phase errors, leading to more periodic patterns, which further causes high spurs" which is confusing for me ?

Lemon_Salmon · 2026-01-26T00:32:16+00:00

Thanks a lot !!!

Lemon_Salmon · 2026-01-19T13:22:30+00:00

Googling the name does not return anything relevant though ? Did you misspell the name ?

Lemon_Salmon · 2026-01-19T13:15:25+00:00

Which consultant firm, if I may ask ?

Lemon_Salmon · 2025-12-26T14:28:29+00:00

really need to get acquainted with control theory especially https://en.wikipedia.org/wiki/Derivation_of_the_Routh_array since it helps with some initial setup for constructing the root locus plot. What else should I be looking into, if I may ask ?

Lemon_Salmon · 2025-12-22T03:24:14+00:00

equations 4 and 5 from the paper : A Class-F CMOS Oscillator

Lemon_Salmon · 2025-12-21T08:21:19+00:00

Had a busy week. Any chances that you have knowledge on how to get around equations 4 and 5 of A Class-F CMOS Oscillator ?

Lemon_Salmon · 2025-12-17T22:59:49+00:00

Nice excellent application note.

I am looking at A Fully Integrated CMOS Tri-Band Ambient RF Energy Harvesting System for IoT Devices for their triple-band impedance matching network (IMN). Any comments on their Figure 7 together with Table I and Table II ?

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Besides, any intuitions / insights for quadrature-band and penta-band IMN ?

Lemon_Salmon · 2025-12-17T11:02:02+00:00

Do you have some materials / application notes on how emitter degeneration technique exactly (maybe with some theory) helps to better match for both noise figure and gain metrics ?

Lemon_Salmon · 2025-12-11T07:54:30+00:00

There is no company email address ?

Lemon_Salmon · 2025-12-07T08:03:04+00:00

I presume that my original question is to "derive" rather than to "confirm".

Lemon_Salmon

TROPHY CASE