Publication detail

Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals

ŠOTNER, R. POLÁK, L. JEŘÁBEK, J. PETRŽELA, J. KLEDROWETZ, V.

Original Title

Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals

Type

journal article in Web of Science

Language

English

Original Abstract

This work deals with the design of a simple double output voltage phase detector, using a specific type of analog multiplier, and its application in a frequency demodulator. The design of active parts was performed in Taiwan Semiconductor Manufacturing Company (TSMC) 0.18 mu m 1.8 V CMOS technology. The intention is devoted to design the circuitry in such a way to avoid low-frequency signal processing with large values of capacities that are not available in case of on-chip implementation. The idea consists in the processing of significantly faster signal (tens of kHz) carrying modulated low frequency information. Then the coupling capacity may have significantly smaller value. The operation of the demodulator was tested for carrier frequency 50 kHz and for modulation signal with frequency of 10 Hz and 500 Hz. Differences of these frequencies approximately determine the values of capacitors required for AC coupling. Simulations (Cadence Spectre simulator) as well as experimental measurement, using fabricated ASIC prototypes, are provided to verify the proposed circuits in both the time and frequency domain.

Keywords

All-pass filter; CMOS multiplier; electronic adjustment; frequency demodulation; phase detector; phase shifter

Authors

ŠOTNER, R.; POLÁK, L.; JEŘÁBEK, J.; PETRŽELA, J.; KLEDROWETZ, V.

Released

25. 6. 2021

Publisher

IEEE

Location

PISCATAWAY

ISBN

2169-3536

Periodical

IEEE Access

Year of study

9

Number

6

State

United States of America

Pages from

93062

Pages to

93078

Pages count

17

URL

https://ieeexplore.ieee.org/document/9465156

Full text in the Digital Library

http://hdl.handle.net/11012/200900

BibTex

@article{BUT172104,
  author="Roman {Šotner} and Ladislav {Polák} and Jan {Jeřábek} and Jiří {Petržela} and Vilém {Kledrowetz}",
  title="Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals",
  journal="IEEE Access",
  year="2021",
  volume="9",
  number="6",
  pages="93062--93078",
  doi="10.1109/ACCESS.2021.3092525",
  issn="2169-3536",
  url="https://ieeexplore.ieee.org/document/9465156"
}