APN1006 - A Colpitts VCO

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of the parameters employed.

Figure 4.

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). Since the epitaxial layer for this kind of hyperabrupt varactor has relatively high resistivity, the series resistance is strongly dependent on the reverse voltage applied to varactor junction. The value of series resistance (RS).

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Part number	APN1006
Manufacturer	Skyworks
File Size	313.91 KB
Description	A Colpitts VCO
Datasheet	APN1006 Datasheet
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www.DataSheet.co.kr APPLICATION NOTE APN1006: A Colpitts VCO for Wideband (0.95–2.15 GHz) Set-Top TV Tuner Applications Introduction Modern set-top DBS TV tuners require high-performance, broadband voltage control oscillator (VCO) designs at a competitive cost. To meet these goals, design engineers are challenged to create high-performance, low-cost VCOs. The Colpitts oscillator is a traditional design used for many VCO applications. Designing a broadband Colpitts oscillator with coverage from 1–2 GHz requires the selection and interaction of an appropriate varactor diode for its resonator. This application note describes the design of a broadband Colpitts VCO that incorporates the SMV1265-011 varactor diode.

Published: Mar 5, 2012 |