Frequency Domain Phase Shift Measurement Technique Applied to a Multiphase Rotary Travelling-Wave VCO

Author

Ansari, Kimia T. ; Ross, Tyler ; Gamand, Patrice ; Plett, Calvin

Author_Institution

Dept. of Electron., Carleton Univ., Ottawa, ON, Canada

Volume

25

Issue

12

fYear

2015

Firstpage

820

Lastpage

822

Abstract

In this letter, the design of a multiphase 18.5 GHz Rotary Travelling-Wave Oscillator (RTWO) is presented. Lack of symmetry in such a structure can result in oscillation in a standing wave rather than the travelling wave mode. In order to determine the mode of the signal, before going through the time consuming steps of time domain phase shift measurement, we have proposed a preliminary phase shift measurement technique in the frequency domain for a high frequency RTWO. This new technique was verified against direct phase measurements for a multiphase RTWO fabricated in a 0.25 μm BiCMOS process with good agreement. In other measurements, the VCO achieved a tuning range of 1.1 GHz and output power of -5.3 dBm.

Keywords

BiCMOS integrated circuits; microwave measurement; microwave oscillators; phase measurement; voltage-controlled oscillators; BiCMOS process; bandwidth 1.1 GHz; frequency 18.5 GHz; frequency domain phase shift measurement technique; multiphase rotary travelling wave VCO; rotary travelling wave oscillator; size 0.25 mum; voltage-controlled oscillator; BiCMOS integrated circuits; Phase measurement; Voltage-controlled oscillators; BiCMOS; VCO; high-frequency; multiphase; phase measurement; rotary travelling-wave oscillator;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2495150

Filename

7321063