scholarly journals Phase-Locked Loop with a loop filter consisting of a capacitor and a charge pump functioned as resistor

2012 ◽  
Vol 16 (11) ◽  
pp. 2495-2502
Author(s):  
Jong-Youn Park ◽  
Hyek-Hwan Choi
Keyword(s):  
Charge Pump ◽  
Phase Locked Loop ◽  
Loop Filter ◽  
A Charge

scholarly journals Design and Implementation of Charge Pump Phase-Locked Loop Frequency Source Based on GaAs pHEMT Process

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 504
Author(s):  
Ranran Zhao ◽  
Yuming Zhang ◽  
Hongliang Lv ◽  
Yue Wu
Keyword(s):  
Maximum Output Power ◽  
Charge Pump ◽  
Phase Locked Loop ◽  
Low Noise ◽  
Signal Frequency ◽  
Maximum Output ◽  
Voltage Controlled Oscillator ◽  
Chip Area ◽  
Frequency Source ◽  
A Charge

This paper realized a charge pump phase locked loop (CPPLL) frequency source circuit based on 0.15 μm Win GaAs pHEMT process. In this paper, an improved fully differential edge-triggered frequency discriminator (PFD) and an improved differential structure charge pump (CP) are proposed respectively. In addition, a low noise voltage-controlled oscillator (VCO) and a static 64:1 frequency divider is realized. Finally, the phase locked loop (PLL) is realized by cascading each module. Measurement results show that the output signal frequency of the proposed CPPLL is 3.584 GHz–4.021 GHz, the phase noise at the frequency offset of 1 MHz is −117.82 dBc/Hz, and the maximum output power is 4.34 dBm. The chip area is 2701 μm × 3381 μm, and the power consumption is 181 mw.

Analysis and Design of High Performance Phase Frequency Detector, Charge Pump and Loop Filter Circuits for Phase Locked Loop in Wireless Applications

2016 ◽  
Vol 4 (2) ◽  
pp. 397
Author(s):  
P.N. Metange ◽  
K. B. Khanchandani
Keyword(s):  
Leakage Current ◽  
High Performance ◽  
Charge Pump ◽  
Phase Locked Loop ◽  
Loop Filter ◽  
Phase Frequency Detector ◽  
Analysis And Design ◽  
Wireless Applications ◽  
5 Ghz ◽  
Frequency Detector

<p>This paper presents the analysis and design of high performance phase frequency detector, charge pump and loop filter circuits for phase locked loop in wireless applications. The proposed phase frequency detector (PFD) consumes only 8 µW and utilises small area. Also, at 1.8V voltage supply the maximum operation frequency of the conventional PFD is 500 MHz whereas proposed PFD is 5 GHz. Hence, highly suitable for low power, high speed and low jitter applications.  The differential charge pump uses switches using NMOS and the inverter delays for up and down signals do not generate any offset due to its fully symmetric operation. This configuration doubles the range of output voltage compliance compared to single ended charge pump. Differential stage is less sensitive to the leakage current since leakage current behaves as common mode offset with the dual output stages. All the circuits are implemented using cadence 0.18 μm CMOS Process.</p>

scholarly journals Memristor-Based Loop Filter Design for Phase Locked Loop

2019 ◽  
Vol 9 (3) ◽  
pp. 24 ◽  
Author(s):  
Naheem Olakunle Adesina ◽  
Ashok Srivastava
Keyword(s):  
Power Consumption ◽  
Filter Design ◽  
High Reliability ◽  
Phase Locked Loop ◽  
Voltage Controlled Oscillator ◽  
Loop Filter ◽  
Silicon Area ◽  
Main Challenge ◽  
A Charge ◽  
Basic Features

The main challenge in designing a loop filter for a phase locked loop (PLL) is the physical dimensions of the passive elements used in the circuit that occupy large silicon area. In this paper, the basic features of a charge-controlled memristor are studied and the design procedures for various components of a PLL are examined. Following this, we propose a memristor-based filter design which has its resistance being replaced by a memristor in order to reduce the die area and achieve a low power consumption. We obtained a tuning range of 741–994 MHz, a stable output frequency of 1 GHz from the transfer characteristics of voltage-controlled oscillator (VCO), and an improved settling time. In addition to reduced power consumption and area occupied on the chip, our design shows a high reliability over wider range of temperature variations.

scholarly journals Charge Pump Phase-Locked Loops and Full Wave Rectifiers for Reachability Analysis

10.29007/x211 ◽  
2018 ◽  
Author(s):  
Omar Beg ◽  
Ali Davoudi ◽  
Taylor T Johnson
Keyword(s):  
Formal Verification ◽  
Charge Pump ◽  
Phase Locked Loop ◽  
Reachability Analysis ◽  
Phase Locked Loops ◽  
Hybrid Automata ◽  
Mixed Signal ◽  
Full Wave ◽  
Mission Critical ◽  
A Charge

Analog-mixed signal (AMS) circuits are widely used in various mission-critical applications necessitating their formal verification prior to implementation. We consider modeling two AMS circuits as hybrid automata, particularly a charge pump phase-locked loop (CP-PLL) and a full-wave rectifier (FWR). We present executable models for the benchmarks in SpaceEx format, perform reachability analysis, and demonstrate their automatic conversion to MathWorks Simulink/Stateflow (SLSF) format using the HyST tool. Moreover, as a next step towards implementation, we present the VHDL-AMS description of a circuit based on the verified model.

scholarly journals Phase Locking in Millimeter Wave Frequency Synthesizers - Design overview of Charge Pump Phase Locked Loops

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Communication Systems ◽  
Phase Locking ◽  
Low Frequency ◽  
Charge Pump ◽  
Local Oscillator ◽  
Phase Locked Loop ◽  
System Level ◽  
Phase Locked Loops ◽  
Frequency Components ◽  
A Charge

Phase Locked Loops are key blocks which are widely adopted in all area of electronics, especially transceivers in wireless communication systems. The application of Phase Locked Loop varies from generation of local oscillator signal for upconversion and down conversion, generation and distribution of clock signals and jitter reduction. The most extensive use of Phase Locked Loop is for frequency synthesis. The requirements of synthesizer architectures depend on various system requirements and specifications which are based on regulatory standards. The design of Phase Locked Loop components involves the consideration of various techniques to resolve the nonidealities at front end high frequency components as well as back end low frequency components. This paper presents the background and importance of a Phase Locked Loop, various approaches over the years, design choices for each block and practical design methodology for Charge Pump Phase Locked Loops. This paper also presents the system level design of Phase Locked Loop and supply noise interactions among sub modules inside a charge pump Phase Locked Loop

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