Abstract: This paper describes a low-noise, 900-MHz, voltage-controlled oscillator (VCO) fabricated in a 0.6-/spl mu/m CMOS technology. The VCO consists of four-stage fully differential delay cells performing full switching. It utilizes dual-delay path techniques to achieve high oscillation frequency and obtain a wide tuning range.

Wide selection of models from spot frequency and narrow band to medium and wide bandwidths up to 1.5 octaves with low phase noise, linear tuning, dual outputs, 5V tuning for PLLs and more!

Feb 20, 2021 · 压控振荡器（Voltage Controlled Oscillator，VCO）是锁相环（PLL）的主要组成部分之一。它能在有限的频率范围内产生频率，通常高于参考振荡器的频率。VCO的频率是可调的，通过改变输入调谐电压来控制。

Abstract: A 900-MHz two-stage CMOS voltage-controlled ring oscillator (VCO) with good phase-noise performance is presented. Implemented in a 0.5-/spl mu/m CMOS technology and at 2.5-V supply voltage, the VCO has a wide operating frequency range from 661.5 MHz to 1.27 GHz with a peak VCO gain (K/sub VCO/) of -630 MHz/V.

Power supply induced noise may be seen at offsets from 20 Hz to 1 MHZ from the carrier. If the VCO is powered from a regulated power supply, the regulator noise will increase depending upon the external load current drawn from the regulator.

Fabricated in CMOS 0.18 mum technology, a single VCO can support operation in six frequency bands including 450 MHz, 700 MHz, 900 MHz, 1800 MHz, 1900 MHz, and 2400 MHz. The VCO occupies 2461 mum 2 chip area and consumes from 2.2 mW to 5.6 mW from a 1.8 V supply.

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To meet the need for high-performance, broadband PLL frequency synthesizers in modern RF transceivers, this paper designs a broadband, low-noise VCO circuit using 130 nm SiGe BiCMOS technology. The VCO system employs multi-core integration and switched-capacitor arrays, integrating seven narrowband VCOs for full wideband frequency coverage.

VCO, 800 to 1300 MHz, +13 dBm, 1 to 14 V Tuning, -55 to +85 *C, Connectorized (H1)

Jan 26, 2021 · VCOs are specifically designed to produce an output signal whose frequency varies according to the amplitude of an input signal over a reasonable range of frequencies. VCOs come in discrete, modular, and monolithic forms, but a discussion of discrete VCOs will provide a basic understanding of how they operate and why certain specifications matter.