Noninverting buck–boost DC–DC converter using a duobinary-encoded single-bit delta-sigma modulator

YK Cho, KC Lee - IEEE Transactions on Power Electronics, 2019 - ieeexplore.ieee.org
This paper presents a delta-sigma modulation (DSM) control scheme for noninverting buck-
boost (NIBB) converter that features a duobinary encoding for four power switch controls …

Positive feedback technique and split‐length transistors for DC‐gain enhancement of two‐stage op‐amps

SM Anisheh, H Shamsi… - IET Circuits, Devices & …, 2017 - Wiley Online Library
This study presents the design and simulation of a fully differential two‐stage op‐amp in a
0.18 μm complementary metal–oxide–semiconductor process with a 1.8 V supply voltage. In …

0.5-V fourth-order low-pass filter

M Kumngern, K Klangthan - 2017 2nd International Conference …, 2017 - ieeexplore.ieee.org
This paper presents a new low-voltage fourth-order low-pass filter employing fully differential
difference transconductance amplifiers which is beneficial for low-voltage low-power signal …

Loop stability compensation technique for continuous-time common-mode feedback circuits

YK Cho, BH Park - 2015 international soC Design conference …, 2015 - ieeexplore.ieee.org
A loop stability compensation technique for continuous-time common-mode feedback
(CMFB) circuits is presented. A Miller capacitor and nulling resistor in the compensation …

Delta-Sigma Modulator-Based Step-Up DC–DC Converter with Dynamic Output Voltage Scaling

YK Cho, BH Park, SB Hyun - Electronics, 2020 - mdpi.com
The switching noise and conversion efficiency of step-up DC-DC converters need to be
improved to meet increasing demand. The delta-sigma modulation (DSM) technique is …

High DC-gain two-stage OTA using positive feedback and split-length transistor techniques

J Nebhen, M Masmoudi, W Rahajandraibe… - Advances in Data …, 2019 - Springer
A fully differential and split-length transistors (SLT) CMOS two-stage operational
transconductance amplifier (OTA) is presented. The proposed amplifier is designed in a …

5.2 mW 61 dB SNDR 15 MHz bandwidth CT ΔΣ modulator using single operational amplifier and single feedback DAC

YK Cho, BH Park, CY Kim - ETRI Journal, 2016 - Wiley Online Library
We propose an architecture that reduces the power consumption and active area of such a
modulator through a reduction in the number of active components and a simplification of …

A single‐bit continuous‐time delta‐sigma modulator using clock‐jitter and inter‐symbol‐interference suppression technique

V Sabouhi, EN Aghdam… - International Journal of …, 2017 - Wiley Online Library
This paper presents a technique for mitigating two well‐known DAC non‐idealities in
continuous‐time delta‐sigma modulators (CTDSMs), particularly in wide‐band and low over …

افزایش مرتبه مدولاتور دلتا سیگمای متعامد بدون اضافه کردن بلوک‌های فعال برای گیرنده‌های رادیویی پهن باند

شمسی - علوم و فناوریهای پدافند نوین, 2020‎ - adst.ihu.ac.ir
پهنای باند سیگنال، یکی از عوامل مهم در سرعت ارسال و دریافت اطلاعات در سامانه‌های گیرنده
رادیویی قابل‌حمل در پدافند نوین است. در همین راستا تلاش میشود بخشهای مختلف این سامانه‌ها …

[PDF][PDF] Increasing the Order of Quadrature Delta Sigma Modulator without Addition of Active Blocks for Wide band Radio Receivers

A Shamsi - Journal of Advanced Defense Science & Technology, 2020 - jms.ihu.ac.ir
Signal bandwidth (BW) is one of the most important factors in transmitting and receiving rate
of information in portable radio receiver systems in advanced defense science. Therefore, it …