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Dissertations / Theses on the topic 'Biquad Filters'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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1

Bentmar, Holgersson Sebastian. "Optimising IIR Filters Using ARM NEON." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20110.

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ARMs processorserie Cortex-A9 har stöd för SIMD-instruktioner med hjälp av NEON MPE. Detta innebär att processorn kan använda sig av vektor-instruktioner som kan utföra operationer på ett flertal element med varje instruktion. Målet med bruk av NEON MPE är att öka prestandan, men då man försöker optimera en speciell IIR-filtertyp som kallas för "biquads" kan man stöta på problem. Problemen med NEON-optimering av "biquads" beror på att endast fem operationer krävs för varje iteration och att behandling av IIR-filter kräver att man behandlar en sampel i taget eftersom varje behandlat sampels vär

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2

Csipkes, Gabor-Laszlo. "Integrated realizations of reconfigurable low pass and band pass filters for wide band multi-mode receivers." Doctoral thesis, [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=979677483.

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3

Csipkes, Gabor-Laszlo. "Integrated realizations of reconfigurable low pass and band pass filters for wide band multi-mode receivers." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1145345696511-52655.

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With the explosive development of wireless communication systems the specifications of the supporting hardware platforms have become more and more demanding. According to the long term goals of the industry, future communications systems should integrate a wide variety of standards. This leads to the idea of software defined radio, implemented on fully reconfigurable hardware.Among other reconfigurable hardware blocks, suitable for the software radio concept, an outstanding importance belongs to the reconfigurable filters that are responsible for the selectivity of the system. The problematic

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4

Li, Siu Kuen Silas. "An area efficient and high speed programmable digital biquad filter." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29413.pdf.

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5

Borisov, Egor. "Analogové elektronické obvody obsahující prvky neceločíselného řádu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-317139.

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In this paper it is illustrated that currently there is a new element in electronics - fractional order filter consisting of fractal devices. The circuits selected are presented and analyzed in this diploma thesis. The calculation of the basic characteristics and parameters of the filter of fractal elements was made. An analysis of the functions and their graphs were presented. The simulation of fractional-order filter for its design was made in the program Matlab. The graphs of frequency characteristics (magnitude and phase response) were obtained in the program OrCAD. The examples of using t

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6

Sun, Shao-Chi. "Design and evaluation of a g m-RC bandpass filter using a 42 GHz linear OTA incorporating heterojunction bipolar transistors." Ohio University / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1179864547.

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7

Liao, Yi-Zhen, and 廖宜楨. "Study of VLSI Architecture Design for Analog Universal Biquad Filters." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/pz4vu6.

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博士<br>國立臺北科技大學<br>電腦與通訊研究所<br>98<br>In this dissertation, active elements such as Differential Difference Current Conveyor (DDCC), Operational Transconductance Amplifier (OTA), and Fully Differential Second-generator Current Conveyor (FDCCII) are used to design five kinds of biquad filter. First, a voltage-mode (VM) circuit is designed by using three DDCCs, three OTAs and two capacitors. It can realize low-pass, high-pass, band-pass, band-reject and all-pass filters simultaneously. The operating frequency can be up to 500 KHz with power consumption of 23.69mW. The chip area of the analog filte

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8

Chiu, Wei-Yuan, and 邱偉元. "Design of Universal Biquad Filters employing Differential Difference Current Conveyors." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/12558006930967666382.

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博士<br>中原大學<br>電子工程研究所<br>99<br>To obtain various filter functions simultaneously in the same circuit topology will increase the usefulness and reduce the cost of the circuit. Traditionally, the KHN biquad can obtain the high-pass, band-pass and low-pass signals in the same circuit topology. So KHN biquads have received much attention and the scholars have researched on this topic for a long time. However, the KHN biquad can only obtain the high-pass, band-pass and low-pass signals. In order to gain more filter signals, the concept of universal biquad is presented. The universal biquad is a bi

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9

Chang, Ching-Lung, and 張景隆. "Non-ideal Effect and Improvement of the Voltage-Mode High-Frequency OTA-C Low-pass、High-pass、Band-pass and Notch Biquad Filters with the Minimum Components." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/54409509967876425937.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>There are several kinds of parasitic capacitances, including input and output parasitic capacitances of an OTA and the nodal parasitic capacitance at the internal node in an OTA-C (Operational Transconductance Amplifier and Capacitor) circuit. This leads to the difficulty to have the same places for both given capacitors and all the parasitic capacitances. When the differential-input OTA and floating capacitances are employed in the circuit structure, and the impossibility to obtain a high–frequency circuit with precise output responses by giving a proper capacit

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10

Λαουδιάς, Κωνσταντίνος. "Σχεδίαση αναλογικών ολοκληρωμένων φίλτρων χαμηλής τάσης τροφοδοσίας με χρήση καθρεπτών ρεύματος". Thesis, 2011. http://nemertes.lis.upatras.gr/jspui/handle/10889/4755.

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Το αντικείμενο της διδακτορικής διατριβής αφορά στη σχεδίαση αναλογικών ολοκληρωμένων φίλτρων χαμηλής τάσης τροφοδοσίας με χρήση καθρεπτών ρεύματος. Οι εφαρμογές της σύγχρονης τεχνολογίας επιτάσσουν τη χρήση συσκευών με όσο το δυνατόν μικρότερες διαστάσεις, χαμηλή τάση τροφοδοσίας, χαμηλή κατανάλωση ισχύος και ταυτόχρονα υψηλές επιδόσεις. Η μείωση της τάσης τροφοδοσίας θέτει αρκετές προκλήσεις στη σχεδίαση αναλογικών ολοκληρωμένων κυκλωμάτων, καθώς οδηγεί σε μειωμένη απόδοση όσον αφορά το εύρος συχνοτήτων λειτουργίας αλλά και το επιτρεπόμενο πλάτος σημάτων που μπορούν να διαχειριστούν. Προς αυ

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11

Κασίμης, Χρυσόστομος. "Σχεδίαση αναλογικών ολοκληρωμένων φίλτρων χαμηλής τάσης τροφοδοσίας στο πεδίο του υπερβολικού ημιτόνου". Thesis, 2012. http://hdl.handle.net/10889/6077.

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Η παρούσα διδακτορική διατριβή εστίασε το ενδιαφέρον της στην διερεύνηση των αναλογικών ολοκληρωμένων φίλτρων της κατηγορίας ELIN εξωτερικά γραμμικά, εσωτερικά μη-γραμμικά. Συγκεκριμένα μελετήθηκαν και σχεδιάστηκαν, νέες δομές φίλτρων συμπίεσης-αποσυμπίεσης του προς επεξεργασία σήματος στο πεδίο του υπερβολικού ημιτόνου χαμηλής τάσης τροφοδοσίας. Η γοργή ανάπτυξη της μικροηλεκτρονικής στην υλοποίηση συστημάτων υψηλής αξιοπιστίας και απόδοσης μικρού βάρους και όγκου όπως φορητών ηλεκτρονικών πολυμέσων, επικοινωνιών, βιοϊατρικών συσκευών, ωθεί στην σχεδίαση των ολοκληρωμένων κυκλωμάτων που τα

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12

Chen, Ching-Han, and 陳靖函. "Research and Analysis of the Current-Mode OTA-C Universal Biquad Filter Structure." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/42308905555223130988.

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碩士<br>中原大學<br>電機工程研究所<br>96<br>Abstract In order to let the output signal to be accurate is always the circuit design goal.The more component used,the more parasitic effect resulted.Besides, floating passive components would cause more parasitic effect than grounded.Because the position of the parasitic effect caused by floating passive component is different from where the passive component. Hence,it would cause the output signal distortion.Nowadays,It is a big research aim at how to design to reduce components used on circuits. In order to simplify circuits,this paper proposed a new curr

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13

LIU, KAN-JU, and 劉侃茹. "Non-Ideal Effect And Improvement Of The Current-Mode OTA-C Universal Biquad Filter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61590717446626165144.

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碩士<br>中原大學<br>電機工程研究所<br>97<br>Abstract In order to let the output signal to be accurate is always the circuit design goal.The more component used,the more parasitic effect resulted.Besides, floating passive components would cause more parasitic effect than grounded.Because the position of the parasitic effect caused by floating passive component is different from where the passive component.Hence,it would cause the output signal distortion.Nowadays,It is a big research aim at how to design to reduce components used on circuits. In order to simplify circuits,this paper proposed a new current-m

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14

Wei, Tzu-An, and 魏子安. "Design of a Continuous-Time Delta-Sigma Modulator with Single-Amplifier-Biquad (SAB) Filter and TDC-based Quantizer." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/79834095185436019578.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>102<br>A power-efficient continuous-time delta-sigma modulator (CTDSM) employing a single-amplifier biquad (SAB) based topology is proposed. The modulator incorporates a proposed twin-T SAB topology where the excess loop delay (ELD) is compensated by injecting a feedback signal into an internal node of the SAB while cooperating with an additional phase-compensation resistor. The non-linearity induced by the mismatch of feedback DAC will increase the in-band noise, thus jeopardizing the SNDR. A low-power time-to-digital converter (TDC) with an embedded data-weighted-

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15

Huang, Wei-Hsiang, and 黃偉翔. "Design of a Continuous-Time Delta-Sigma Modulator with Single-Amplifier-Biquad (SAB) Filter and DWA-Embedded Quantizer." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/80300069332506760287.

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碩士<br>國立臺灣大學<br>電子工程學研究所<br>103<br>Two works are included in this thesis. The first work is a 4th-order 4-bit CTDSM. With proposed SAB-based loop filter, 4th-order noise shaping is achieved with two local resonators while using only two op-amps and two DACs. A low-power interpolating flash quantizer with an embedded random-skipped incremental data weighted averaging (RS-IDWA) function is presented. The proposed RS-IDWA function addresses nonlinearity issues of the quantizer and feedback DACs. Fabricated in 90 nm CMOS, the proposed CTDSM achieves peak SNDR of 68 dB over 13 MHz signal bandwidth,

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16

Mei, Chi-Kai, and 梅季凱. "Non-ideal Effect and Improvement of the Voltage-Mode High-Frequency Universal Biquad Filter structure with whe Minimum Components." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/61017467537979317148.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>It is worthy of research to do the analog circuit design using Operational Transconductance Amplifiers（OTAs）and Capacitors（Cs）because an OTA is equivalent to both an active element and a resistor leading to a more condensed integrated circuit without resistors, and because the equivalent resistor value can be electronically tuned varying the bias current. The traditional analog circuit usually operate at 1MHz, the situation at much higher frequency does not been discussed at any thesis, so we will observe the effect of the responses at the high frequency and very

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17

Chan, Chih-Yuan, and 詹智源. "Non-Ideal Effect and Improvement of The Current-Mode High-Frequency OTA-C Universal Biquad Filter with The Minimum Components." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/49669122593986579234.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>Abstract There are several kinds of parasitic capacitances, including input and output parasitic capacitances of an OTA and the nodal parasitic capacitance at the internal node in an OTA-C (Operational Transconductance Amplifier and Capacitor) circuit. In the analogy circuit design ,in order to have the same place for both given capacitor and all the parasitic capacitances, it must use for differential-input OTA and floating capacitance. An improvement approach is then proposed by the absorption of parasitic capacitances from the given capacitors to obtain a prec

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18

Chang, Chin-Lun, and 張慶倫. "Non-ideal Effect and Improvement of the Tunable Current-Mode High-Frequency OTA-C Universal Biquad Filter Structure with the Minimum Components." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/94026867620229815656.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>There are several kinds of parasitic capacitances, including input and output parasitic capacitances of an OTA and the nodal parasitic capacitance at the internal node in an OTA-C (Operational Transconductance Amplifier and Capacitor) circuit. This leads to the difficulty to have the same places for both given capacitors and all the parasitic capacitances. When the differential-input OTA and floating capacitances are employed in the circuit structure, and the impossibility to obtain a high–frequency circuit with precise output responses by giving a proper capacit

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19

Huang, Cing-Jhong, and 黃慶鐘. "Non-ideal Effect of the Voltage-Mode High-Frequency Biqued Filter structure with Four Single-Ended-Input OTAs and Two Grounded Capacitors." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/30527687518907162311.

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碩士<br>中原大學<br>電機工程研究所<br>95<br>It is worthy of research to do the analogue circuit design using Operational Transconductance Amplifiers (OTAs) and Capacitors (Cs) because an OTA is equivalent to both an active element and a resistor leading to a more condensed integrated circuit without resistors, and because the equivalent resistor value can be electronically tuned varying the bias current. Though the structure of the circuit has already been simplified, but manufacturing technology of integrated circuit (IC) of now unable to make circuit very much accurate, will is it output signal produce

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20

Amir, Aslanzadeh Mamaghani Hesam. "Design of a Direct-Modulation Transmitter with Self-Optimizing Feedback and a Highly Linear, Highly Reconfigurable, Continuously-Tunable Active-RC Baseband Filter for Multiple Standards." Thesis, 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7479.

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This work consists of two main parts: i) Design and implementation of a compact current-reusing 2.4GHz direct-modulation transmitter with on-chip automatic tuning; ii) Design and implementation of a novel highly-reconfigurable, continuously tunable, power-adjustable Active-RC filter for multiple standards. The design, analysis, and experimental verification of a proposed self-calibrating, current reused 2.4GHz, direct-modulation transmitter are introduced. A stacked arrangement of the power amplifier/voltage-controlled oscillator is presented along with a novel LC-tank-tuning algorithm with a

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