Ultra-low power signal conditioning system for effective biopotential signal recording

Thakur, Diksha; Sharma, Kulbhushan; Kapila, Sonal; Sharma, Rajnish

doi:10.1088/1361-6439/ac3465

Cited by 23 publications

(1 citation statement)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this way, there are several divisions among analog integrated filters. According to which portion is a more popular approach, filters can be categorized, for instance, based on how they are located on the chip, the type of filtering, or whether they are working in continuous or discrete systems [9].…”

Section: Introductionmentioning

confidence: 99%

A Highly Tunable Ultra-Low Cut-Off Frequency gm-c Filter with Bandwidth Stabilization Technique

Sasan,

Baghtash

2023

Preprint

View full text Add to dashboard Cite

In this paper, an efficient technique for stabilizing the bandwidth of low-bandwidth biomedical gm-c filters is proposed. Using this technique, the bandwidth of the filter becomes much less dependent on the circuit elements’ variations due to temperature or process, and thus the filter can be tuned more effectively and accurately. First, with circuit analysis, the reason for the dependency of the bandwidth on the circuit components is extracted. Then, an efficient circuit is proposed to reduce this dependency. The proposed 4th order gm-c filter has a symmetrical structure, and designed in TSMC 180 nm CMOS technology with bandwidth of 50 mHZ to 20 Hz, power consumption of 0.73 µW. Finally, using mathematical relationships and circuit simulations, the effectiveness of the proposed filter is proven.

show abstract

Section: Introductionmentioning

confidence: 99%