Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

A TX VCO for WCDMA/EDGE in 90 nm RF CMOS

Författare

Summary, in English

A VCO is implemented in an RF 90 nm CMOS process and covers the frequency range 2.55-4.08 GHz. Drawing 19 mA from 1.2 V, the phase noise at 20 MHz frequency offset from a 3.7 GHz carrier is -156 dBc/Hz, meeting the phase noise requirement for GSM/EDGE and SAW-less WCDMA transmitter after frequency division by 2 or by 4. A second version of the VCO covers an additional 4.90-5.75 GHz range, at the expense of a higher phase noise in the added band. In this way, all currently operational WCDMA/EDGE bands can be synthesized by a single VCO working at the double or quadruple of the desired band. A technique for shortening the transient response of the VCO during frequency tuning is also presented.

Publiceringsår

2011

Språk

Engelska

Sidor

1618-1626

Publikation/Tidskrift/Serie

IEEE Journal of Solid-State Circuits

Volym

46

Issue

7

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • Duplex frequency
  • EDGE
  • phase noise
  • radio frequency integrated
  • circuits
  • tuning range
  • voltage controlled oscillators
  • WCDMA

Status

Published

Forskningsgrupp

  • Data converters & RF

ISBN/ISSN/Övrigt

  • ISSN: 0018-9200