고조파 전류 제거 기술을 적용한 고성능 보완형 VCO 설계 = Design of A High-Performance Complementary VCO with Harmonic Current Cancellation Technique

다국어 초록 (Multilingual Abstract)

Design of A High-Performance Complementary VCO with Harmonic Current Cancellation Technique Aulya Sholehah Wataawa Sau Dept. of Electronics Engineering Graduate School Hanbat National University Advisor : Han Jung-gyu This thesis presents A harmonic cancellation technique based on a phase manipulation technique is proposed for Ku and K-band voltage-controlled oscillators (VCO), achieving phase noise reduction, especially at the () region. The proposed VCO utilizes an auxiliary PMOS transistor with dynamically controlled biasing to generate additional high-order components. The proposed technique compensates for the phase difference between high-order harmonic components of the main cross-coupled PMOS and NMOS transistors, ensuring the phase difference () of 180 between them. The alignment, due to the proposed technique, significantly suppresses the undesired high-order harmonic components entering the tank capacitive path and disturbs its natural frequency. The proposed topology is fabricated in 65nm CMOS technology, achieving a phase noise of –33.78 dBc/Hz at 1 KHz frequency offset and -112 dBc/Hz at 1 MHz frequency offset. The phase noise improvement reach 5 dB at the  region compared to a conventional complementary VCO. Despite its low power consumption of 4.5 mW, the design VCO achieves an excellent figure-of-merit (FoM) of -188.4 dBc/Hz with a tuning range of 1.1 GHz (8.1%), from 13 GHz to 14.1 GHz. Index terms: high-order harmonics, harmonic cancellation, Impulse Sensitivity Function (ISF), oscillator, phase manipulation, voltage-controlled oscillator (VCO).

목차 (Table of Contents)

• List of Table ⅰ
• List of Figures ⅱ
• Abstract ⅳ
• 1. Introduction 1
• 1.1. Motivation 3
• 1.2. Objectives and Thesis Overview 4
• 2. High-Order Harmonic Behavior 6
• 3. Complementary VCO With Harmonic Cancellation Technique 10
• 3.1. The Proposed Method 10
• 3.1.1. Phase Manipulation Technique 10
• 3.1.2. Harmonic Waveform Shaping Due to  and  14
• 3.2. Implementation 17
• 3.3. Start-up Analysis 18
• 3.3. Phase Noise Analysis 19
• 3.3.1. Impulse Sensitivity Function (ISF) 19
• 3.3.2. Thermal Noise 21
• 3.4. Implementation and Layout of The Proposed Design 19
• 4. Measurement Results and Comparison 23
• 4.1. Performance Comparison 28
• 5. Conclusions 30
• References 31
• 국 문 요 약 36
• Acknowledgement 37