An InGaP/GaAs HBT Based Differential Colpitts VCO with Low Phase Noise
نویسندگان
چکیده
منابع مشابه
Design of low phase noise InGaP/GaAs HBT-based differential Colpitts VCOs for interference cancellation system
This paper presents design, fabrication and characterization of two differential Colpitts voltage controlled oscillator (VCOs) cross-coupled VCO (CC-VCO) and double cross-coupled VCO (DC-VCO) in InGaP/GaAs HBT technology. Their main parameters like the oscillation frequency, output power and phase noise performance are measured and compared with other recently published studies. In the cores of...
متن کاملA Noise-Shifting Differential Colpitts VCO
A novel noise-shifting differential Colpitts VCO is presented. It uses current switching to lower phase noise by cyclostationary noise alignment and improve the start-up condition. A design strategy is also devised to enhance the phase noise performance of quadrature coupled oscillators. Two integrated VCOs are presented as design examples.
متن کاملA 10-GHz Low Phase Noise Differential Colpitts CMOS VCO Using Transformer Coupling Technology
We demonstrated a 10GHz low phase noise differential Colpitts Voltage-Controlled Oscillator (VCO) utilizing TSMC 0.18 m μ 1P6M CMOS process with transformer coupling technology. The transformer coupling approach not only reduces the phase noise but also improves the power consumption owing to the number of active devices can be reduced. The total power consumption of this VCO is 20 mW and there...
متن کاملA Low Power and Low Phase Noise Complementary Colpitts Quadrature VCO
A low power and low-phase noise quadrature voltage controlled oscillator (QVCO) using the differential complementary Colpitts oscillator topology has been developed. A transformer inductor is used to form a differential output oscillator and the back-gate coupling technique is used to generate quadrature outputs. The advantage of proposed QVCO is analyzed in terms of power consumption, phase no...
متن کامل17.2 A CMOS Differential Noise-Shifting Colpitts VCO
Demand for higher numbers of communication channels imposes tighter phase noise performance for the local oscillators. Cross-coupled oscillators are widely used due to ease of implementation and differential operation (Figure 17.2.1a) [1,2,3]. Unfortunately, in cross-coupled VCOs the maximum noise generation instant coincides with maximum phase noise sensitivity and hence the cross-coupled VCOs...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of electromagnetic engineering and science
سال: 2007
ISSN: 2234-8409
DOI: 10.5515/jkiees.2007.7.2.064