Cited time in webofscience Cited time in scopus

Full metadata record

DC Field Value Language
dc.contributor.advisor Lee, Jung Hyup -
dc.contributor.author Baik, Seung Yeob -
dc.date.accessioned 2017-05-10T08:53:38Z -
dc.date.available 2017-01-18T00:00:00Z -
dc.date.issued 2017 -
dc.identifier.uri http://dgist.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002326991 en_US
dc.identifier.uri http://hdl.handle.net/20.500.11750/1500 -
dc.description.abstract Wireless sensor networks require ultra-low power consumption. To avoid wasting power consumption, wake up receiver system is applied to main receiver system. The wake up receiver continuously watch a wake up signal from other nodes. If it detects a wake up signal, it activates the main receiver to receive data.
The baseband circuit for wake up receiver is composed of envelope detector, programmable gain amplifier and comparator. The enveloped detector converts the high frequency signal to baseband signal. The output signal of envelope detector is amplified through the programmable gain amplifier suitably. The comparator determines that the output signal of the programmable gain amplifier is high or low.
This baseband circuit uses fully differential structure to strong from environment noise and coupling noise. The gain of programmable gain amplifier is defined by the ratio of capacitor value through negative feedback network. Moreover, the comparator not only consume power only when the input signal cross the threshold voltage, but also apply a replica biasing circuit with negative feedback to achieve low power consumption and be strong from PVT variation. This system is designed in 180nm technology and the total current consumption is under 14μA, when the supply voltage is 1.8V. ⓒ 2017 DGIST
-
dc.description.tableofcontents I. Introduction 1 --
II. Envelope Detector 5 --
2.1 Conventional envelope detector 5 --
2.2 Fully differential envelope detector 7 --
2.3 Conversion gain of fully differential envelope detector 11 --
III. Programmable Gain Amplifier 13 --
3.1 Operational trans-conductance amplifier 13 --
3.2 Fully differential amplifier 16 --
3.3 Resistive feedback 18 --
3.4 Capacitive feedback 23 --
3.5 Noise Analysis 26 --
3.6 Apply chopper stabilization technique 26 --
IV. Comparator 30 --
4.1 Threshold inverter quantizer 30 --
4.2 Inverter based fully differential comparator with replica biasing 32 --
V. Conclusion 35
-
dc.format.extent 40 -
dc.language eng -
dc.publisher DGIST -
dc.subject Wake up receiver -
dc.subject Baseband -
dc.subject Envelope detector -
dc.subject Programmable gain amplifier -
dc.subject Comparator -
dc.subject Wake up 수신기 -
dc.subject 기저 대역 -
dc.subject 포락선 검출기 -
dc.subject 증폭기 -
dc.subject 비교기 -
dc.title Low-Power Analog Baseband Circuits for Wake-Up Receivers -
dc.title.alternative Wake-Up 수신기를 위한 저전력 기저 대역 아날로그 회로 설계 -
dc.type Thesis -
dc.identifier.doi 10.22677/thesis.2326991 -
dc.description.alternativeAbstract Wake up receiver 는 정보의 수신이 없을 때에는 주 수신기를 꺼놓고 송신기에서 정보를 보낸다는 신호가 들어오면 wake up receiver 를 통해 신호 감지 후 주 수신기를 동작시키는 방식이다. 그 결과 정보의 송 수신이 없을 때에는 주 수신기가 동작하지 않아 불필요한 전력소모를 줄임으로써 저전력 구동이 가능하다. 나아가 fully differential 구조를 사용함으로써 환경 및 커플링 잡음에 강한 Wake up 수신기를 위한 기저 대역 아날로그 회로를 설계하였다.
본 논문에서는 wake up receiver 의 저주파 대역 시스템인 고주파 신호를 저주파 신호로 변환하는 envelope detector, envelope detector 의 출력을 원하는 만큼 조절하여 증폭이 가능한 programmable gain amplifier, 증폭된 신호를 최종적으로 0과 1로 결정하는 comparator 에 관한 연구를 수행하였다. Envelope detector 는 common gate 구조를 사용하여 conversion gain 을 향상시키고, programmable gain amplifier 는 feedback 과 fully differential 구조를 사용하여 gain을 capacitor 비율로 결정함으로써 외부 잡음으로부터 강하게 동작하도록 설계하였다. Comparator 는 replica biasing 회로를 추가하여 온도와 공정에 강인한 threshold voltage 을 갖도록 설계하였다. TSMC 0.18 μm 공정을 사용하여 1.8V 공급 전압에 약 14uA 전류 사용으로 동작하는 저전력 wake up 수신기 기저 대역 시스템을 완성하였다. ⓒ 2017 DGIST
-
dc.description.degree Master -
dc.contributor.department Information and Communication Engineering -
dc.contributor.coadvisor Je, Min Kyu -
dc.date.awarded 2017. 2 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.date.accepted 2017-01-18 -
dc.contributor.alternativeDepartment 대학원 정보통신융합공학전공 -
dc.contributor.affiliatedAuthor Baik, Seung Yeob -
dc.contributor.affiliatedAuthor Lee, Jung Hyup -
dc.contributor.affiliatedAuthor Je, Min Kyu -
dc.contributor.alternativeName 백승엽 -
dc.contributor.alternativeName 이정협 -
dc.contributor.alternativeName 제민규 -
Files in This Item:
000002326991.pdf

000002326991.pdf

기타 데이터 / 1.37 MB / Adobe PDF download
Appears in Collections:
Department of Electrical Engineering and Computer Science Theses Master

qrcode

  • twitter
  • facebook
  • mendeley

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE