scholarly journals 40-nm CMOS Wideband High-IF Receiver Using a Modified Charge-Sharing Bandpass Filter to Boost Q-Factor

2018 ◽  
Vol 65 (8) ◽  
pp. 2581-2591 ◽  
Author(s):  
Filipe Dias Baumgratz ◽  
Sandro Binsfeld Ferreira ◽  
Michiel S. J. Steyaert ◽  
Sergio Bampi ◽  
Filip Tavernier
Keyword(s):  
Bandpass Filter ◽  
Q Factor ◽  
Charge Sharing

scholarly journals A Charge-Sharing Bandpass Filter Topology with Boosted Q-Factor in 40-NM CMOS

2018 ◽  
Author(s):  
Filipe D. Baumgratz ◽  
Sandro B. Ferreira ◽  
Michiel Steyaert ◽  
Sergio Bampi ◽  
Filip Tavernier
Keyword(s):  
Bandpass Filter ◽  
Q Factor ◽  
Charge Sharing ◽  
A Charge

A new feedback strategy to boost Q-factor of charge-sharing bandpass filters

2020 ◽  
Author(s):  
Filipe D. Baumgratz ◽  
Sandro B. Ferreira ◽  
Michiel S. J. Steyaert ◽  
Filip Tavernier ◽  
Sergio Bampi
Keyword(s):  
Bandpass Filters ◽  
Q Factor ◽  
Charge Sharing ◽  
Feedback Strategy

scholarly journals X-Band Microstrip Bandpass Filter Design using Square Loop Resonator and Defected Ground Structure

2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
E. Edwar ◽  
M.R. Yusron ◽  
Dharu Arseno
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Radar System ◽  
Center Frequency ◽  
Q Factor ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Telecommunication System ◽  
X Band

Filter is an important part in telecommunication system including in radar system. To get the better performance in selecting the signal, a ftlter must have a good Q-Factor. In this paper, an investigation of a ftlter design for synthetic radar has been successfully done. This ftlter has been designed to work at x-band using square loop resonator (SLR). A Defected Ground Structure (DGS) has been implemented to this work to increase the Q-factor of the ftlter. The result of measurement getting that the center frequency at 9.51 GHz with the bandwidth 610 MHz and PCB size of this ftlter is 22 mm x 16 mm.

scholarly journals HIGH Q-FACTOR NARROW-BAND BANDPASS FILTER USING CYLINDRICAL DIELECTRIC RESONATORS FOR X-BAND APPLICATIONS

2018 ◽  
Vol 77 ◽  
pp. 65-71 ◽  
Author(s):  
Reza Karimzadeh-Jazi ◽  
Mohammad Amin Honarvar ◽  
Farzad Khajeh-Khalili
Keyword(s):  
Bandpass Filter ◽  
Narrow Band ◽  
Dielectric Resonators ◽  
Q Factor ◽  
High Q ◽  
X Band

scholarly journals Enhancing Q-Factor in a Biquadratic Bandpass Filter Implemented with Opamps

Technologies ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 64 ◽  
Author(s):  
Esteban Tlelo-Coyotecatl ◽  
Alejandro Díaz-Sánchez ◽  
José Miguel Rocha-Pérez ◽  
Jose Luis Vázquez-González ◽  
Luis Abraham Sánchez-Gaspariano ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Integrated Circuit ◽  
Bandpass Filter ◽  
Filter Design ◽  
Q Factor ◽  
Central Frequency ◽  
Circuit Element ◽  
Biquadratic Filter ◽  
Circuit Elements ◽  
Circuit Technology

Active filter design is a mature topic that provides good solutions that can be implemented using discrete devices or integrated circuit technology. For instance, when the filter topologies are implemented using commercially available operational amplifiers (opamps), one can explore varying circuit parameters to tune the central frequency or enhance the quality (Q) factor. We show the addition of a feedback loop in the signal flow graph of a biquadratic filter topology, which enhances Q and highlights that a sensitivity analysis can be performed to identify which circuit elements influence central frequency, Q, or both. In this manner, we show the opamp-based implementation of a biquadratic bandpass filter, in which Q is enhanced through performing a sensitivity analysis for each circuit element. Equations for the central frequency and Q are provided to observe that there is not a direct parameter that enhances them, but we show that from sensitivity analysis one can identify the circuit elements that better enhance Q-factor.

Switched-capacitor bandpass filter with quasi-continuous digital Q-factor tunability

2002 ◽  
Vol 38 (1) ◽  
pp. 8 ◽  
Author(s):  
J.L. Ausín ◽  
J.F. Duque-Carrillo ◽  
G. Torelli ◽  
F. Maloberti
Keyword(s):  
Bandpass Filter ◽  
Switched Capacitor ◽  
Q Factor

scholarly journals Fully integrated high quality factor <i>G</i><sub>m</sub><i>C</i> bandpass filter stage with highly linear operational transconductance amplifier

2017 ◽  
Vol 15 ◽  
pp. 149-155 ◽  
Author(s):  
Jochen Briem ◽  
Marco Mader ◽  
Daniel Reiter ◽  
Raul Amirpour ◽  
Markus Grözing ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Process Variations ◽  
Q Factor ◽  
Operational Transconductance Amplifier ◽  
High Quality ◽  
Fully Integrated ◽  
Local Process ◽  
Transconductance Amplifier ◽  
Control Circuits ◽  
Global And Local

Abstract. This paper presents an electrical, fully integrated, high quality (Q) factor GmC bandpass filter (BPF) stage for a wireless 27 MHz direct conversion receiver for a bendable sensor system-in-foil (Briem et al., 2016). The core of the BPF with a Q factor of more than 200 is an operational transconductance amplifier (OTA) with a high linearity at an input range of up to 300 mVpp, diff. The OTA's signal-to-noise-and-distortion-ratio (SNDR) of more than 80 dB in the mentioned range is achieved by stabilizing its transconductance Gm with a respective feedback loop and a source degeneration resistors RDG. The filter stage can be tuned and is tolerant to global and local process variations due to offset and common-mode feedback (CMFB) control circuits. The results are determined by periodic steady state (PSS) simulations at more than 200 global and local process variation parameter and temperature points and corner simulations. It is expected, that the parasitic elements of the layout have no significant influence on the filter behaviour. The current consumption of the whole filter stage is less than 600 µA.

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