서지주요정보
D-band CMOS multi-channel beamforming receiver IC for MIMO radar = MIMO 레이다를 위한 D밴드 CMOS 다채널 빔포빙 수신단 집적회로
서명 / 저자 D-band CMOS multi-channel beamforming receiver IC for MIMO radar = MIMO 레이다를 위한 D밴드 CMOS 다채널 빔포빙 수신단 집적회로 / Ilgwon Kim.
발행사항 [대전 : 한국과학기술원, 2024].
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8043007

소장위치/청구기호

학술문화관(도서관)2층 학위논문

DEE 24080

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Sub-tera Hertz frequency bands and technologies have re-ceived keen attention for future 6G generation communica-tions and sensings. The available wide bandwidth allows us to have high data rates and high resolutions. The D-band fre-quencies of 110-170 GHz are thought to have many applica-tions in near future . It is expected that these can be readily implemented with advanced RF CMOS technologies, which provide the advantages of high-level integration and low cost. The integrated receiver block requires good RF performances of low noise figure and high gain as well as high linearity and low power consumption. However, as the frequency increases, the transconductance (MAG) of the transistor decreases rapidly. Therefore, various gain boosting techniques with positive feedbacks have to be introduced to design an amplifier with reasonable number of stages. A 1-channel receiver beamforming IC composed of a phase shifter, Low noise amplifier, mixer and frequency multiplier and a 4-channel and 8-channel receiver beamforming IC implemented. A radar system test module is implemented to verify the 8-channel beamforming IC and its performance is verified through free space mesurement setup.

서브테라헤르츠(Sub-tera Hertz) 주파수 대역 및 기술은 미래 6G 세대 통신 및 센싱에서 큰 주목을 받아왔습니다. 사용 가능한 넓은 대역폭을 통해 높은 데이터 속도와 높은 해상도를 얻을 수 있다. 110-170 GHz의 D-대역 주파수는 가까운 미래에 많은 응용 분야를 가질 것으로 생각된다. 이는 높은 수준의 집적도와 저렴한 비용이라는 이점을 제공하는 고급 RF CMOS 기술을 통해 쉽게 구현될 수 있을 것으로 예상된다. 통합 수신기 블록은 낮은 잡음 지수와 높은 이득은 물론 높은 선형성과 낮은 전력 소비 등 우수한 RF 성능을 요구한다. 그러나 주파수가 증가함에 따라 트랜지스터의 트랜스컨덕턴스(MAG)는 급격히 감소한다. 따라서 합리적인 단 수의 증폭기를 설계하려면 포지티브 피드백을 갖춘 다양한 이득 부스팅 기술을 도입해야 한다. 위상 천이기, 저잡음 증폭기, 믹서 및 주파수 체배기로 구성된 1채널 수신기 빔포밍 IC와 4채널 및 8채널 수신기 빔포밍 IC가 구현되었다. 8채널 빔포밍 IC 검증을 위해 레이더 시스템 테스트 모듈을 구현하고 자유 공간 측정 설정을 통해 성능을 검증한다.

서지기타정보

서지기타정보
청구기호 {DEE 24080
형태사항 ix, 61 p. : 삽도 ; 30 cm
언어 영어
일반주기 저자명의 한글표기 : 김일권
지도교수의 영문표기 : Songcheol Hong
지도교수의 한글표기 : 홍성철
Including appendix
학위논문 학위논문(박사) - 한국과학기술원 : 전기및전자공학부,
서지주기 References : p. 59-61
주제 D-band
Millimeter wave
Receiver
ICs
CMOS
디밴드
밀리미터파
수신단
집적회로
CMOS
QR CODE

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이 주제의 인기대출도서

Atmospheric attenuation according to frequency and wavelength [1]

Block diagram ofthe 8-channel D-Band receiver

Three beamforming structures in RFIC [2]

Link Budget ofthe 8-channel Receiver Beamforming IC

40 nm CMOS transistor performance

(a)Aschematic ofthe proposed wideband LNA with triple-coupled trans-formers and its parameter table (b) a small signal halfcircuit ofthe first stage (c)a resonance coupling model ofthe triple-coupled transformer.

Cross coupled cap (CCC) VS Triple-coupled transformer in D-Band

(a) Unitamplifierstage with triple-coupled transformer schematic (b) The impedance magnitude response ofthe resonance-coupled RLC matching circuit.

Thesimulated unit amplifier |Z21l offrequency response (a) effect ofk when Q1/Q2 is constant, (b) effect ofQ1/Q2 when kis constant

Thesimulated lZ21l offrequency response (a) staggered matching with 2 pole symmetrical resonance coupling (b) staggered matching with the proposed 2 pole asymmetrical resonance coupling.

Chip microphotograph ofthe D-band wideband LNA.

The measured S-parameters and K-factor ofthe LNA

The measured noise figure and linearity ofthe LNA.

PERFORMANCE COMPARISONS OF RECENTLY REPORTED D-BAND CMOSLNAS

Schematic ofthe proposed cross-summing VG-LNA with triple-inductive coupling method

Simulated MAG and K-factor of the LNA. (a) MAG (b) K-factor versus CN at150 GHz with the transistor sizes of16,20 and 24um.

The small-signal measured results of the LNA, S-parameters, Stability, Noise figure and Gain versus input.power, Gain variation.

Chipphotograph of the fabricated VG-LNA

COMPARISON TABLE OF THE D-BAND CMOS DIFFERENTIAL LNAS

(a) Halfcircuit model ofa transmission delayline, (b) Variable unit cell with a digitally controlled series L and variable shunt C's. simultaneously, thedelay can be changed withoutasignificantchange oftheimpedance.

The simulated phase states oftransmission delay line unit cell (a)all phase states in 1st cell, (b) available phase states in 7th cell.

S21 phase with SI transistor size, coupling coefficient and dual switch unit cell principle

Chip microphotograph ofthe proposed phase shifter.

Measured and simulated results ofthe proposed phase shifter, (a) S21, (b)input (S11) and output (S22) reflections

Measured S21 phase responses at calibrated points with fine tunings

PERFORMANCE COMPARISONS OFRECENTLY REPORTED D-BAND PSs

Proposed Active Phase Inverter

Proposed Active PI Schematic and phase shifter chipphoto

Measurement results with active phase inverter

Phase constellation with active phase inverter

D-band 4 channel receiver link budget and schematics

D-band X6 multiplier chain schematic

D-band X6 multiplier chain simulation results

D-band I/Q mixer schematic

Power measurement setup with frequency synchronization

(a) S-parameter setup, (b) noise figure setup, (c) power setup

Retrun loss and conversion gain measurement setup

D-band 4 channel receiver chip photo

4-channel measurement result - small signal

4-channel measurement result -IF output power

4-channel measurement result -linearity

-channel measurement result-IF corner frequency

D-band 8 channel receiver link budget

D-band 8 channel receiver chipphoto

D-band 8 channel receiver digital blocks

8-channel measurement result - small signal

8-channel measurement result - power

8-channel measurement result -linearity

8-channel measurement result phase

8-channel measurement result - oscilloscope signal

MIMO operation increases antenna aperture size effectively to have high angular resolution.

Designed D-band 8-arrays antenna 十 feed line

Designed D-band 8-arrays antenna radiation pattern

Designed D-band 8-arrays antenna simulation results

Simulated results ofthe feed line mismatch

Designed D-band 8-arrays antenna implementation

Designed D-band 8-arrays antenna and 8 channel receiver chip implementatio.

Measurement setup ofthe 8 channel Receiver Module

Measurement setup ofcontrol interface

Antenna module measurement results -I/Q signal

Antenna module measurement results - mismatch calibration

Antenna module measurement results -calibration method

Beam-steering concept ofaphased array antenna

Minimum angle beam-steering results @147 GHz

Measured beam pattern (-30' /-20'/ -10' /0' /10'/20' /30') @147 GHz

Measured beam pattern (0') @ 142/144.5 /147/149.5/152 GHz

Array antenna 2D scan a 147 GHz