Filters








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CMOS software-defined radio transceivers: Analog design in digital technology

Jan Craninckx
2012 IEEE Communications Magazine  
The total baseband chain (Gm-TIA, passive pole, Gm-C-filter and VGA) provides 6th order filtering if needed, tunable from 0.4 to 30 MHz and 0-55 dB of gain.  ...  All modern communication standards relevant for a modern handheld mobile device must be taken into account.  ... 
doi:10.1109/mcom.2012.6178847 fatcat:atynsqcdkvdvrfk2sz6otnp52m

Z-copy Voltage Controlled Current Follower Differential Input Transconductance Amplifier in Controllable Biquadratic Band-Pass Filter

Roman Sotner, Jan Jerabek, Tomas Dostal, Kamil Vrba
2016 Elektronika ir Elektrotechnika  
generators and frequency filters with just one active element.  ...  This active element has three voltage-controlled parameters (intrinsic resistance of current input, voltage gain and transconductance of output section) and is very useful for design of oscillators, signal  ...  ( ) , ( ) OUT m BP IN V sC g A K s V D s   (4) where 2 1 2 2 ( ) . m m f g D s s C C sC g A R    (5) Angular pole frequency ωp of the filter can be adjusted by voltage-controlled gm = 1/Rf = 1/R  ... 
doi:10.5755/j01.eie.22.4.15911 fatcat:ccjln5gw5bgrndqplwv5ndbqpq

First–Order Transfer Sections with Reconnection–Less Electronically Reconfigurable High–Pass, All–Pass and Direct Transfer Character

Roman Sotner, Jan Jerabek, Norbert Herencsar, Roman Prokop, Abhirup Lahiri, Tomas Dostal, Kamil Vrba
2016 Journal of Electrical Engineering  
Presented research introduces active filtering circuits which allow change of the transfer type without necessity of reconnection of the input or output terminal that can be very useful for on-chip applications  ...  Our attention is focused on simple first-order filters that allow high-pass response (HP), all-pass response (AP) and also direct transfer (DT) with constant magnitude and phase characteristics between  ...  For research, infrastructure of the SIX Center was used. Research described in the paper was supported by Czech Science Foundation project under No. 14-24186P.  ... 
doi:10.1515/jee-2016-0002 fatcat:etk7wio2qnhejjqloer65dtczm

A 3.6mW @ 1.2V high linear 8th-order CMOS complex filter for IEEE 802.15.4 standard

Alberto Villegas, Diego Vazquez, Eduardo Peralias, Adoracion Rueda
2011 2011 Proceedings of the ESSCIRC (ESSCIRC)  
This paper presents a fully differential 1.2V 8 th -order inverter-based gm-C complex filter with 2.4MHz bandwidth and centered at 2.5MHz, designed in a 90nm CMOS process technology.  ...  The filter presents attractive attributes in terms of power, IRR, SFDR, noise and selectivity, demonstrated by experimental measurements from a fabricated prototype. I.  ...  This paper presents a gm-C complex filter compliant with the requirements imposed in the IEEE 802.15.4 standard [4] .  ... 
doi:10.1109/esscirc.2011.6044924 dblp:conf/esscirc/VillegasVPR11 fatcat:xeb7ory76rdzjgd5c3tio7pt4q

Recent Progress in the Design of 4G/5G Reconfigurable Filters

Yasir Al-Yasir, Naser Ojaroudi Parchin, Raed Abd-Alhameed, Ahmed Abdulkhaleq, James Noras
2019 Electronics  
Currently, several microwave filter designs contend for use in wireless communications.  ...  Among various microstrip filter designs, the reconfigurable planar filter presents more advantages and better prospects for communication applications, being compact in size, light-weight and cost-effective  ...  Accordingly, the need for reconfigurable filters is enhanced. RF noise is an increasingly serious issue in modern wireless communication applications such as 5G and wide-band radar systems.  ... 
doi:10.3390/electronics8010114 fatcat:kdz4cnudxrfl5hjwvavzkxaalm

Preparation and Evaluation of Anti inflammatory Polyherbal Gel

R. D. Trivedi, M. V. Shrimanker, S.K. Shah
2018 American Journal of PharmTech Research  
The aim of present study was to assess the anti-inflammatory activity of polyherbal formulation of leaves of H. aciatica, C. gigantean & A. aspera were collected and authenticated.  ...  ACKNOLEGEMENT I solemnly express my deepest acknowledgement, for providing the financial support from GUJCOST.  ...  Table 1 : 1 The Compositions of Gel Formulations Ingredients F1 F2 H. aciatica 1 gm 2 gm C. gigantean 1 gm 2 gm A. aspera 1 gm 2 gm Carbopol 934 2 gm 2 gm Propylene glycol 2ml 2ml Ethanol  ... 
doi:10.46624/ajptr.2018.v8.i1.028 fatcat:f2xb2y2hm5hn7ewqrco2b4fzxi

Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance

Winai Jaikla, Unchittha Buakhong, Surapong Siripongdee, Fabian Khateb, Roman Sotner, Phamorn Silapan, Peerawut Suwanjan, Amornchai Chaichana
2021 Sensors  
For the AP+ experimental result, the leading phase response for 1 kHz to 1 MHz frequency changed from 180 to 0 degrees.  ...  For the AP− experimental result, the lagging phase response for 1 kHz to 1 MHz frequency changed from 0 to −180 degrees.  ...  Acknowledgments: The authors would like to thank the anonymous reviewers for providing valuable comments which helped improve the paper substantially.  ... 
doi:10.3390/s21217376 pmid:34770682 pmcid:PMC8587353 fatcat:momccmp6u5a4rlmuszyp7lylou

Quadrupolar, emission-tunable π-expanded 1,4-dihydropyrrolo[3,2-b]pyrroles – synthesis and optical properties

Anita Janiga, Dominika Bednarska, Bjarne Thorsted, Jonathan Brewer, Daniel T. Gryko
2014 Organic and biomolecular chemistry  
Then 30 butane-2,3-dione (519 μl, 6 mmol) was added and the resulting mixture was stirred at 100 °C for 3 h. After cooling the precipitate was filtered off and washed with glacial acetic acid.  ...  Eventually, the critical figure of merit i.e. two-photon brightness is the highest for dye 7 (~200 GM).  ... 
doi:10.1039/c4ob00143e pmid:24633130 fatcat:3b7u67al6rgrvil3dm36zjpkpa

Tunable Q-enhanced LC dual-band filtering at microwave frequencies in 0.13 µm SiGe BiCMOS

Farooq Amin, Sanjay Raman, Kwang-Jin Koh
2018 International journal of microwave and wireless technologies  
AbstractThis paper presents an active Q-enhanced LC dual-band band-pass filtering approach using parallel synthesis techniques at X- and Ku-bands in 0.13 µm SiGe BiCMOS technology.  ...  For higher out-of-band (OOB) attenuation, subtraction of the two 2nd-order bandpass filter is implemented. The two bands are independently tunable in terms of Q and center frequency.  ...  Introduction Modern wireless communication and radar systems require multi-purpose, multi-standard, and multi-frequency radio frequency (RF) front-ends that can operate in the presence of strong interference  ... 
doi:10.1017/s1759078718000429 fatcat:ilnwwq462zct3jpqhvsvewy5si

ISOLATION AND CHARACTERIZATION OF WITHAFERIN-A FROM THE WITHANIA SOMNIFERA (ASHWAGANDHA)

Bali Reddy Keesara, Rakesh Kumar Jat
2017 Journal of Drug Delivery and Therapeutics  
In the present study, we have standardized the protocol for the isolation of Withaferin-A from the Ashwagandha punchang. Withaferin A possess anti-inflammatory and anti-stress properties.  ...  It was Refluxed at 60 o C for 90 min. after 90 min materials was filtrate and added further 800 ml of 75 % Methanol and reflux continue for four hours at 60 o C.  ...  After that, flask was allowed to stand for cool and filtered all solutions.  ... 
doi:10.22270/jddt.v7i1.1375 fatcat:z75bz7axinbi5agopkpynqp3gi

Study of Phytochemical Analysis and Antioxidant Activity of Allium sativum of Bundelkhand Region

Vandana Singh, Ramesh Kumar
2017 International Journal of Life-Sciences Scientific Research  
Secondary metabolites found in the medicinal plants play important role in curing different diseases and used as important raw materials for the manufacturing of traditional and modern medicine.  ...  Garlic has been shown to inhibit enzymes involved in lipid synthesis, decrease platelet aggregation, prevent lipid peroxidation of oxidized erythrocytes and LDL, increase antioxidant status, and inhibit  ...  After 1 hour flasks were taken out from the water bath and kept at room temperature for cooling purpose then the extract was filtered with the help of filter paper and stored at 4°C for further process  ... 
doi:10.21276/ijlssr.2017.3.6.4 fatcat:me34bsxanbezleogmf724pafh4

RENAL COMPLICATIONS IN HIV PATIENTS IN AND AROUND MADURAI- A CROSS-SECTIONAL STUDY
English

Balasubramanian Narayana Srinivasan, Pravin A J S
2017 Journal of Evolution of Medical and Dental Sciences  
BACKGROUND HIV is the modern pandemic spreading throughout the world in a rampant manner.  ...  Males seek the medical help more often than females and this could be the reason for male predominance in our study.  ...  Mild RF-1.5 to 3 gm/dL; Moderate RF-3 to 5 gm/dL; Severe RF-more than 5 gm/dL.  ... 
doi:10.14260/jemds/2017/1150 fatcat:gblnht3mjzfqxpwwz6ckzh4bfi

Design Methodology of N-Path Filters With Adjustable Frequency, Bandwidth, and Filter Shape

M. Naimul Hasan, Shahrokh Saeedi, Qun Jane Gu, Hjalti H. Sigmarsson, Xiaoguang Liu
2018 IEEE transactions on microwave theory and techniques  
In addition, an analytical synthesis procedure is introduced to realize high-order bandpass filters based on N-path architecture with a prescribed set of specifications.  ...  A proof-of-concept bandpass filter is fabricated and measured in a 65-nm CMOS process. The filter can be reconfigured to realize different filter shapes by changing coupling capacitors.  ...  Required steps for synthesis of a filter with a decoupled first stage.  ... 
doi:10.1109/tmtt.2018.2809573 fatcat:tybscht7qzehrplj22oagzjthe

SiRF 2021 Final Program

2021 2021 IEEE 20th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)  
, Northrop Grumman Coorporation, USA Abstract: Filters are fundamental signal processing electric components and therefore are crucial building blocks in modern RF/wireless systems.  ...  This has led to a resurgence of modern development efforts in absorptive filtering that spans a wide range of approaches and technologies.  ... 
doi:10.1109/sirf51851.2021.9383334 fatcat:iv5pgssfjrgubonnm4z47glhpe

RWS 2021 Final Program

2021 2021 IEEE Radio and Wireless Symposium (RWS)  
, Northrop Grumman Coorporation, USA Abstract: Filters are fundamental signal processing electric components and therefore are crucial building blocks in modern RF/wireless systems.  ...  This has led to a resurgence of modern development efforts in absorptive filtering that spans a wide range of approaches and technologies.  ... 
doi:10.1109/rws50353.2021.9360373 fatcat:paomp4e44jfkfphdkd3o7ultqy
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