A 2-GHz, 6-mW BiCMOS Frequency Synthesizer
نویسندگان
چکیده
A 128-channel pulse-swallow frequency synthesizer includes a 3-mW VCO, a 2.2-mW 16/17 dual-modulus prescaler, a 9-b program counter, and a 7-b swallow counter. The circuit is fully integrated with the exception of the loop-filter capacitor. The ECL prescaler incorporates current sharing and circuit stacking techniques to reduce power consumption. Fabricated in a 1m, 20-GHz BiCMOS process, the circuit operates from a 3-V supply and occupies an active area of 0.28 mm.
منابع مشابه
A Fully Integrated 20-GHz Frequency Synthesizer in 0.13-μm BiCMOS
This paper presents a fully integrated 20-GHz frequency synthesizer based on an integer-N fourth-order type-II phase-locked loop (PLL). The PLL synthesizer employing a cross-coupled LC VCO was fabricated in a 0.13-μm SiGe:C BiCMOS process with a small chip area of 0.48 mm. The VCO core current is 4 mA. The full tuning range of the VCO is 2.21 GHz from 19.9 to 22.11 GHz, and the PLL can synthesi...
متن کاملA SiGe 6 Modulus Prescaler for a 60 GHz Frequency Synthesizer
A prescaler is widely used in frequency synthesizers in order to handle channel selection. The division ratio has to be chosen carefully to achieve the desired frequency. In this paper, we present a 6 modulus prescaler in a 0.18 μm SiGe BiCMOS technology. The prescaler is part of a 60 GHz frequency synthesizer. In addition, we present a frequency planning for the 60 GHz frequency synthesizer. T...
متن کاملA 2-V, 1.8-GHz BJT Phase-Locked Loop
This paper describes the design of a bipolar junction transistor phase-locked loop (PLL) for fractional-N frequency-synthesis applications. Implemented in a 0.8m BiCMOS technology, the PLL can operate up to 1.8 GHz while consuming 225 mW of power from a single 2-V supply. The entire LC-tuned negative-resistance variable-frequency oscillator is integrated on the same chip. A differential low-vol...
متن کاملAutomatic calibration of modulated fractional-N frequency synthesizers
The focus of this research has been the development of a low power, radio frequency transmitter architecture. Specifically, a technique for in service automatic calibration of a modulated phase locked loop (PLL) frequency synthesizer has been developed. Phase/frequency modulation is accomplished by modulating the feedback divide value in a phase locked loop frequency synthesizer. A digital prec...
متن کاملA 9-bit Quadrature Direct Digital Synthesizer Implemented in 0.18- m SiGe BiCMOS Technology
This paper describes a 9-bit 6.2-GHz low power quadrature direct digital synthesizer (DDS) implemented in a 0.18m SiGe BiCMOS technology. With a 9-bit pipeline accumulator and two 8-bit sine-weighted current steering DACs, this DDS is capable of generating quadrature sinusoidal waveforms up to 3.15 GHz with a maximum clock frequency of 6.2 GHz. Packed with more than 13 500 transistors, the quad...
متن کامل