A highly linear receiver front-end employing modified derivative superposition method with tuned inductors for 5.25 GHz

Youngbin Ahn, Chiwan Park, Jae Hoon Lee, Jichai Jeong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We design a highly linear CMOS RF receiver front-end operating in the 5 GHz band using the modified derivative superposition (DS) method with one- or two-tuned inductors in the low noise amplifier (LNA) and mixer. This method can be used to adjust the magnitude and phase of the third-order currents at output, and thus ensure that they cancel each other out. We characterize the two front-ends by the third-order input intercept point (IIP3), voltage conversion gain, and a noise figure based on the TSMC 0.18 μm RF CMOS process. Our simulation results suggest that the front-end with one-tuned inductor in the mixer supports linearization with the DS method, which only sacrifices 1.9 dB of IIP3 while the other performance parameters are improved. Furthermore, the front-end with two-tuned inductors requires a precise optimum design point, because it has to adjust two inductances simultaneously for optimization. If the inductances have deviated from the optimum design point, the front-end with two-tuned inductors has worse IIP3 characteristic than the front-end with one-tuned inductor. With two-tuned inductors, the front-end has an IIP3 of 5.3 dBm with a noise figure (NF) of 4.7 dB and a voltage conversion gain of 23.1 dB. The front-end with one-tuned inductor has an IIP3 of 3.4 dBm with an NF of 4.4 dB and a voltage conversion gain of 24.5 dB. There is a power consumption of 9.2 mA from a 1.5 V supply.

Original languageEnglish
Pages (from-to)882-888
Number of pages7
JournalMicroelectronics Journal
Volume41
Issue number12
DOIs
Publication statusPublished - 2010 Dec 1

Fingerprint

linear receivers
Noise figure
inductors
Derivatives
Inductance
Electric potential
Mixer circuits
Low noise amplifiers
Linearization
Electric power utilization
inductance
CMOS
electric potential
linearization
low noise
Optimum design
receivers
amplifiers

Keywords

  • Derivative superposition method
  • Front-end
  • Linearization
  • LNA
  • Mixer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

A highly linear receiver front-end employing modified derivative superposition method with tuned inductors for 5.25 GHz. / Ahn, Youngbin; Park, Chiwan; Lee, Jae Hoon; Jeong, Jichai.

In: Microelectronics Journal, Vol. 41, No. 12, 01.12.2010, p. 882-888.

Research output: Contribution to journalArticle

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