Design and fabrication of a millimeter-wave MMIC HBT VCO with consideration for modulation linearity and low phase noise

Tomoya Kaneko, Koki Tanji, Yasushi Amamiya, Takaki Niwa, Hidenori Shimawaki, Shinichi Tanaka, Kenzo Wada

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A 38 GHz-band MMIC (Monolithic Microwave Integrated Circuit) VCO (Voltage Controlled Oscillator) has been developed for the millimeter wave radio communications systems, using the AlGaAs/InGaAs HBT (Hetero Bipolar Transistor). There are the p+/p re-grown base contact and several other technologies in fabrication process of HBT used for realizing low 1/f noise of the oscillation transistor. Furthermore, unique circuit technology to maximize the quality-factor of a resonator and a base-collector junction diode p-n varactor are designed for the low phase noise characteristics and the linear frequency modulation characteristics. The MMIC HBT VCO exhibit a phase noise of 85 dBc/Hz at 100 KHz off the carrier and a frequency modulation linearity of less than 3.6%p-p with the maximum frequency deviation of 37.5 MHz at 38 GHz band.

Original languageEnglish
Pages (from-to)44-48
Number of pages5
JournalNEC Research and Development
Volume41
Issue number1
Publication statusPublished - 2000 Jan
Externally publishedYes

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Bipolar transistors
Variable frequency oscillators
Monolithic microwave integrated circuits
Phase noise
Millimeter waves
Modulation
Frequency modulation
Fabrication
Varactors
Radio communication
Resonators
Communication systems
Transistors
Diodes
Networks (circuits)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Design and fabrication of a millimeter-wave MMIC HBT VCO with consideration for modulation linearity and low phase noise. / Kaneko, Tomoya; Tanji, Koki; Amamiya, Yasushi; Niwa, Takaki; Shimawaki, Hidenori; Tanaka, Shinichi; Wada, Kenzo.

In: NEC Research and Development, Vol. 41, No. 1, 01.2000, p. 44-48.

Research output: Contribution to journalArticle

Kaneko, Tomoya ; Tanji, Koki ; Amamiya, Yasushi ; Niwa, Takaki ; Shimawaki, Hidenori ; Tanaka, Shinichi ; Wada, Kenzo. / Design and fabrication of a millimeter-wave MMIC HBT VCO with consideration for modulation linearity and low phase noise. In: NEC Research and Development. 2000 ; Vol. 41, No. 1. pp. 44-48.
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AU - Shimawaki, Hidenori

AU - Tanaka, Shinichi

AU - Wada, Kenzo

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