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Memristive band pass filter chaotic circuit: multistability and control 忆阻带通滤波器混沌电路：多稳态与控制
International Journal of Electronics Letters Pub Date : 2022-04-19 DOI: 10.1080/21681724.2022.2068193
Servet Kamdem Tchiedjo, J. Kengne, G. Djuidjé Kenmoé
{"title":"Memristive band pass filter chaotic circuit: multistability and control","authors":"Servet Kamdem Tchiedjo, J. Kengne, G. Djuidjé Kenmoé","doi":"10.1080/21681724.2022.2068193","DOIUrl":"https://doi.org/10.1080/21681724.2022.2068193","url":null,"abstract":"ABSTRACT This paper studies the influence of an explicit symmetry break on the dynamics of a memristive band pass filter. It is shown that the circuit exhibits complex behaviours. The symmetry break is achieved by considering a memristor emulator with an asymmetric current-voltage characteristic. We describe how the bifurcation sequences, the number and types of coexisting solutions, and the topology of the basins of attraction metamorphose when monitoring both the system parameters and initial conditions. The theoretical results are validated by a series of simulations under PSPICE.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"203 - 220"},"PeriodicalIF":0.0,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49346598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Compact ultrawideband filter with reconfigurable band notch characteristics 具有可重构带阻特性的紧凑型超宽带滤波器
International Journal of Electronics Letters Pub Date : 2022-04-17 DOI: 10.1080/21681724.2022.2062790
D. Jhariya, A. Mohan
{"title":"Compact ultrawideband filter with reconfigurable band notch characteristics","authors":"D. Jhariya, A. Mohan","doi":"10.1080/21681724.2022.2062790","DOIUrl":"https://doi.org/10.1080/21681724.2022.2062790","url":null,"abstract":"ABSTRACT A novel compact ultrawideband (UWB) filter with reconfigurable band notch property is presented. Stepped impedance slotline (SISL) resonator along with two open-ended coupled microstrip is used for the realisation of UWB filter. The WLAN band of rejection is obtained by placing the U-shaped DGS near the SISL resonator. Furthermore, two capacitors are placed in the active slot of U-shaped DGS to obtain WiMAX band of rejection. The proposed UWB filter with reconfigurable band notched characteristics is fabricated and measured. The measured results agree well with the simulated results.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"135 - 145"},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46395239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Realisation of low voltage low power class AB OTA and its application in biquadratic filter 低压低功率AB类OTA的实现及其在双二次滤波器中的应用
International Journal of Electronics Letters Pub Date : 2022-04-14 DOI: 10.1080/21681724.2022.2065535
Karima Garradhi, N. Hassen
{"title":"Realisation of low voltage low power class AB OTA and its application in biquadratic filter","authors":"Karima Garradhi, N. Hassen","doi":"10.1080/21681724.2022.2065535","DOIUrl":"https://doi.org/10.1080/21681724.2022.2065535","url":null,"abstract":"ABSTRACT In this paper, a new high-performance Class AB operational transconductance amplifier circuit is introduced. Based on flipped voltage follower technique, the proposed OTA showed a high DC gain of 41.33 dB with a unity gain frequency at 14 MHz, a wide dynamic range, a total harmonic distortion of −42.61 dB at 100 kHz and occupies only 28.64 x 20.61 µm2 chip area. Thereafter, a new single-input-multi-output (SIMO) transadmittance mode filter possessed by three multi-output OTAs and two capacitors is realised. The proposed filter can be achieved by all the standard filter functions without changing the circuit topology. The post-layout simulation results of the proposed OTA and biquadratic filter have been implemented with Cadence Virtuoso in TS18SL 0.18 µm technology Tower Jazz.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"165 - 179"},"PeriodicalIF":0.0,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48697422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A compact RHCP and LHCP truncated corner patch series-fed array antenna 一种紧凑的RHCP和LHCP截断角贴片串联馈电阵列天线
International Journal of Electronics Letters Pub Date : 2022-04-06 DOI: 10.1080/21681724.2022.2062789
H. Zakeri, M. Parvaneh, G. Moradi
{"title":"A compact RHCP and LHCP truncated corner patch series-fed array antenna","authors":"H. Zakeri, M. Parvaneh, G. Moradi","doi":"10.1080/21681724.2022.2062789","DOIUrl":"https://doi.org/10.1080/21681724.2022.2062789","url":null,"abstract":"ABSTRACT In this letter, a design of dual-circularly-polarised series-fed truncated corner patch antenna is proposed. This low-profile antenna consists of a 4 4 radiative truncated corner square shape array patches and two non-radiative substrate integrated waveguide (SIW) power-dividers. Moreover, using two perpendicular network feeds can help to generate right-hand and left-hand circular polarisations with two distinguished ports. The antenna operates with acceptable radiation characteristics in which the reflection coefficient is less than −10 dB from 11.7 to 12.2 GHz. Hence, the operating bandwidth of this antenna is about 500 MHz. To verify the simulated results, a prototype of this antenna is fabricated and measured. Simulation and measurement results prove that the proposed antenna can be a good candidate for satellite communication.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"125 - 133"},"PeriodicalIF":0.0,"publicationDate":"2022-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45895723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Voltage control of three-phase stand-alone photovoltaic system based on improved deadbeat controller 基于改进无差拍控制器的三相独立光伏系统电压控制
International Journal of Electronics Letters Pub Date : 2022-04-06 DOI: 10.1080/21681724.2022.2062788
M. Pichan, Mohsen Karimi
{"title":"Voltage control of three-phase stand-alone photovoltaic system based on improved deadbeat controller","authors":"M. Pichan, Mohsen Karimi","doi":"10.1080/21681724.2022.2062788","DOIUrl":"https://doi.org/10.1080/21681724.2022.2062788","url":null,"abstract":"ABSTRACT Stand-alone photovoltaic systems (SAPs) based on three-phase inverters have found high attention, recently. However, unbalanced loading condition is inevitable condition for these inverters. To prepare a current flow for inevitable fourth wire current, four-leg inverter is a beneficial solution. To sinusoidal load voltage shaping, the control method is very important since it must maintain three-phase balanced sinusoidal load voltages. Among different linear and non-linear control methods, deadbeat (DB) method offers high simplicity as well as good accordance for digital implementation. But, it suffers from two sampling period delay which deteriorates the load voltage quality and sometimes results in instability of the control system. In this paper, new DB control method with delay compensation strategy is proposed which not only have the usual benefits of the DB control method but also it overcomes the aforementioned weakness. Finally, a 3 kW laboratory test bench based on DSP-based digital control board is provided to consider the result of the proposed control methods. Several tests under various inverter loads such as no load, full linear load and 100% unbalanced load are done to evaluate the benefits of the proposed system.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"113 - 124"},"PeriodicalIF":0.0,"publicationDate":"2022-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44394915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Simple structure with low temperature drift bandgap voltage reference design 一种具有低温漂移带隙电压基准的简单结构设计
International Journal of Electronics Letters Pub Date : 2022-03-28 DOI: 10.1080/21681724.2022.2059818
Xinsheng Wang, Xicong Wang, Shimin Fan
{"title":"A Simple structure with low temperature drift bandgap voltage reference design","authors":"Xinsheng Wang, Xicong Wang, Shimin Fan","doi":"10.1080/21681724.2022.2059818","DOIUrl":"https://doi.org/10.1080/21681724.2022.2059818","url":null,"abstract":"ABSTRACT Due to the dilemma between the temperature coefficient and the structural complexity of the traditional bandgap voltage reference, a simple bandgap voltage reference with low temperature coefficient is proposed in this paper. Based on the Brokaw bandgap circuit structure, making the structural innovation. The requirement of the traditional structure for high gain amplifier is abandoned and the current mirror structure is used to realise the current proportional relation, which simplifies the circuit structure. The negative feedback path makes the results more accurate. Intriguingly, under 3.3 V power supply voltage, using TSMC 0.18 μm CMOS process, SPECTRE simulation results show that when the temperature of the output voltage of the bandgap voltage reference is −65°C ~ 150°C, the temperature coefficient is 12.79 ppm/°C, and the PSRR is 79.85 dB, noise is 5.636 UV and start-up time is 200 ns.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"104 - 112"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46159532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Orthogonally crossed triangular monopole antenna for octave band frequencies 倍频带频率正交交叉三角形单极天线
International Journal of Electronics Letters Pub Date : 2022-02-09 DOI: 10.1080/21681724.2022.2040055
S. S, S. Krishnan, Rubesh Andelsivj; P M, A. Prajapati, Lalit Chaudhari
{"title":"Orthogonally crossed triangular monopole antenna for octave band frequencies","authors":"S. S, S. Krishnan, Rubesh Andelsivj; P M, A. Prajapati, Lalit Chaudhari","doi":"10.1080/21681724.2022.2040055","DOIUrl":"https://doi.org/10.1080/21681724.2022.2040055","url":null,"abstract":"ABSTRACT This paper proposes an orthogonally positioned inverted triangular monopole antenna over a compact plane reflector with stable radiation pattern for octave band of frequencies. Two triangles are placed crossed and orthogonal to each other to obtain nearly uniform omni-direction radiation pattern. The antenna is placed over a square reflector exhibits 73% bandwidth at (4.5 GHz). The measured impedance bandwidth and radiation pattern of the antenna match well with Finite Element Method (FEM) and Method of Moments (MOM) analysis of the structure. The antenna is novel in its orthogonal design and the triangles fed differently with compact reflector. The designed octave band planar antenna (3.0–6.5 GHz) has applications in Wireless LAN and intelligent transportation systems (ITS). The compact antenna design with uniform radiation pattern is used as radiator inside a room and cabinets for RF isolation measurements.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"89 - 103"},"PeriodicalIF":0.0,"publicationDate":"2022-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43749984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A non-uniform strip-array decoupling structure of the MIMO antenna-arrays for the DSRC application 用于DSRC应用的MIMO天线阵列的非均匀条形阵列解耦结构
International Journal of Electronics Letters Pub Date : 2022-01-09 DOI: 10.1080/21681724.2021.2025442
Yi-Jung Tang, Renjing Gao
{"title":"A non-uniform strip-array decoupling structure of the MIMO antenna-arrays for the DSRC application","authors":"Yi-Jung Tang, Renjing Gao","doi":"10.1080/21681724.2021.2025442","DOIUrl":"https://doi.org/10.1080/21681724.2021.2025442","url":null,"abstract":"ABSTRACT In this paper, a non-uniform strip-array decoupling structure (SADS) of the MIMO antenna-arrays for the dedicated short-range communication (DSRC) applications in intelligent transportation systems (ITS) is presented. The SADS is composed of metal strips with non-uniform longitudinal layout, which has a simple strip-array geometry, low design and fabrication complexity, and easy to be applied to the design domain without destroying the original antenna-array. The design of the strip thickness, strip-array layout and number of strips is realised by the proposed simple and effective optimisation method. The mutual coupling between the elements can be effectively suppressed to less than −32 dB by the proposed structure in the required bandwidth (5.795 GHz~5.815 GHz). The results show that, compared with the no-strip and uniform SADS, the non-uniform SADS can improve the maximum mutual coupling reduction by 23 dB and 13 dB, respectively. Both the simulated and measured results verify the effectiveness of the proposed SADS, which makes it very suitable for the large-scale MIMO antenna-arrays.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"80 - 88"},"PeriodicalIF":0.0,"publicationDate":"2022-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44313309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance of a multihop cognitive radio network with diversity under imperfect CSI 不完全CSI条件下具有分集的多跳认知无线网络性能研究
International Journal of Electronics Letters Pub Date : 2022-01-04 DOI: 10.1080/21681724.2021.2025439
S. Mondal, D. Bepari, S. Biswas
{"title":"Performance of a multihop cognitive radio network with diversity under imperfect CSI","authors":"S. Mondal, D. Bepari, S. Biswas","doi":"10.1080/21681724.2021.2025439","DOIUrl":"https://doi.org/10.1080/21681724.2021.2025439","url":null,"abstract":"ABSTRACT This paper analyses the outage performance of a multihop relay-based cognitive radio network under imperfect channel state information. A backoff power control scheme is applied to ensure both the quality of service (QoS) and interference constraints of the primary network. To reduce the interference at the primary network, we have proposed a new multihop transmission method where a relay node forwards the signal to the next relay node only when the signal is decoded successfully and QoS of the primary network is satisfied. Unlike the conventional relay transmission scheme, in our system model, a relay node receives signals not only from the previous node but also from the previous-to-previous node. The selection combining (SC) and maximum ratio combining (MRC) diversity schemes are applied to enhance the outage performance of the secondary network. The Monte Carlo simulation is adopted to validate the analysis. It is observed from the simulation results that the outage probability of the secondary network and interference probability of the primary network are impacted by the correlation coefficient between real and estimated channels, the number of hops and the backoff power coefficient.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"41 - 54"},"PeriodicalIF":0.0,"publicationDate":"2022-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45213736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design of Dual-Band Notched UWB Antenna Loaded with Split Ring Resonators for Wide Band Rejection 带劈裂环谐振器的宽带抑制双频缺口超宽带天线设计
International Journal of Electronics Letters Pub Date : 2022-01-03 DOI: 10.1080/21681724.2021.2025437
Penchala Reddy Sura, Sekhar M, Katta Anil Kumar
{"title":"Design of Dual-Band Notched UWB Antenna Loaded with Split Ring Resonators for Wide Band Rejection","authors":"Penchala Reddy Sura, Sekhar M, Katta Anil Kumar","doi":"10.1080/21681724.2021.2025437","DOIUrl":"https://doi.org/10.1080/21681724.2021.2025437","url":null,"abstract":"ABSTRACT Nowadays, the design of a miniaturised ultra-wideband (UWB) antenna with wide dual band-notched characteristics gained widespread demand in wireless communications to reduce interference. The design of a planar CPW-fed circular UWB antenna loaded with split ring resonators and stubs is presented to eliminate two frequency bands. Two symmetrical circular split ring resonators are etched below the CPW feed at the backside of a circular UWB monopole antenna to suppress 3.61 GHz–5.57 GHz (sub-6 GHz band) wideband interference, whereas the 7.06 GHz–8.79 GHz (X-band uplinks and downlinks) band is suppressed by loading two L-shaped stubs. Slots are also made on the patch and ground to enhance impedance matching at a lower resonance frequency. The proposed notch band antenna has a compact size of 38 × 32 × 1.6 mm3 and has the highest gain of 5.75 dB at a frequency of 9 GHz. The parametric analysis has been performed to obtain optimised dimensions for better performance. The designed antenna is simulated, prototyped and tested to validate the antenna design.","PeriodicalId":13968,"journal":{"name":"International Journal of Electronics Letters","volume":"11 1","pages":"17 - 29"},"PeriodicalIF":0.0,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48236338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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