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![Figure 3: A model of an 8-bit time based ADC [12].](profile/Shakeeb-Abdullah/publication/354380337/figure/fig2/AS:1064937078128640@1630912193026/A-model-of-an-8-bit-time-based-ADC-12_Q320.jpg)
![Figure 4: LMS calibration for VCO based ADC [12].](profile/Shakeeb-Abdullah/publication/354380337/figure/fig3/AS:1064937078157312@1630912193078/LMS-calibration-for-VCO-based-ADC-12_Q320.jpg)
![Figure 5: Normalized VCO transfer curve using LMS method [12].](profile/Shakeeb-Abdullah/publication/354380337/figure/fig4/AS:1064937078140928@1630912193138/Normalized-VCO-transfer-curve-using-LMS-method-12_Q320.jpg)
![Figure 6: VCO tuning curve using LMS method [12].](profile/Shakeeb-Abdullah/publication/354380337/figure/fig5/AS:1064937078128641@1630912193183/VCO-tuning-curve-using-LMS-method-12_Q320.jpg)
The purpose of this thesis was to present a new perspective on how to design extremely
linear digitally controlled oscillators. This was achieved by introducing a new concept known as linearity field maps. The linearity response of the measured DCO had an R2 value of 0.996; which was extremely linear. The DCO employed equal bank steps for all bank...
Citations
... ©2022 IEEE. Original version doi: 10.1109/WiSEE49342.2022.9926932. be hand-operated), it can become tedious and difficult for the remote operator to get the vehicle to plug itself in the charging socket. ...
... The drawback of this is this method only operates at one resonant frequency regardless of coupling region. Banks of tunable capacitors and inductors can be used to adjust the impedance (similar to how the LC resonant tanks of digitally-controlled oscillators are tuned) [9] & [10]. Usually it is preferable to use tunable capacitor banks (or variable capacitors such as varactors) since capacitors generally have high Q and inductors tend to be bulky with poor Q. ...
Space rovers usually use solar power to power themselves. Unfortunately this can be impractical when exploring the dark side of a planet. To overcome this, a new adaptive wireless power solution is proposed for charging the rovers. The new wireless charging solution makes use of a directional coupler that acquires the difference between the incident and reflected mismatch of the wireless network; which is then sent to a gain & phase detector. The detector then sends this info to a processing microcontroller that computes an optimal impedance using a direct computational algorithm for maximum power transfer efficiency. The impedance is controlled using a tunable matching network which the microcontroller regulates. Recovered wireless power transfer efficiency (PTE) of greater than 99% (from less than 20% of PTE of initial mismatch) was achieved using this tuned method.
