Detail publikace

Arbitrarily Tunable Phase Shift in Low-Frequency Multiphase Oscillator

ŠOTNER, R. POLÁK, L. JEŘÁBEK, J. JAIKLA, W.

Originální název

Arbitrarily Tunable Phase Shift in Low-Frequency Multiphase Oscillator

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

A special electronically tunable multiphase oscillator with arbitrarily and continuously adjustable phase shifts is introduced. Our design assumes to set the phase around the asymptotical limit of 180.. These features cannot be easily achieved in a standard way, i.e., any simple single-phase oscillator supplemented by a first-order adjustable all-pass (AP) section (shifter). The proposed design uses an electronically linearly tunable quadrature oscillator with a frequency range from 0.98 up to 12.54 kHz. It also offers multiples of 45. as the initial setting of the phase shift tuning region. The example of operation shows the adjustment of the phase shift at a specific frequency (10 kHz) within the range of +/- 45 degrees. and around -180 degrees, -135 degrees, and -90 degrees. This variability is not available in standard cases without the use of several AP sections. The current value of the phase shift of the presented oscillator is electronically controlled and does not influence the oscillation frequency and condition of oscillation. Output levels of produced signals are not influenced by this tuning process and are in the range of several hundreds of mV. Two applications of the oscillator are proposed. The first one focuses on low-bitrate modulation systems [phase shift keying (PSK)] while in the second one, our circuit represents a source of phase-adjustable signals in acoustic experiments. Discrete passive elements and active devices (special multipliers having current output terminals, unity-gain differential voltage buffers) fabricated in 0.35 mu m I3T25 ON Semiconductor 3.3 V CMOS process are used in experimental verification.

Klíčová slova

All-pass (AP) filter; arbitrary phase shift; electronic adjustment; multiphase; multiplier; oscillator; quadrature

Autoři

ŠOTNER, R.; POLÁK, L.; JEŘÁBEK, J.; JAIKLA, W.

Vydáno

29. 5. 2023

Nakladatel

IEEE

Místo

PISCATAWAY

ISSN

0018-9456

Periodikum

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT

Ročník

72

Číslo

1

Stát

Spojené státy americké

Strany od

1

Strany do

11

Strany počet

11

URL

https://ieeexplore.ieee.org/document/10138531

Plný text v Digitální knihovně

http://hdl.handle.net/11012/214350

BibTex

@article{BUT184275,
  author="Roman {Šotner} and Ladislav {Polák} and Jan {Jeřábek} and Winai {Jaikla}",
  title="Arbitrarily Tunable Phase Shift in Low-Frequency Multiphase Oscillator",
  journal="IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT",
  year="2023",
  volume="72",
  number="1",
  pages="1--11",
  doi="10.1109/TIM.2023.3280514",
  issn="0018-9456",
  url="https://ieeexplore.ieee.org/document/10138531"
}