Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804095
Peng Zhou, Yongrong Shi, Wanchun Tang
In this paper, a novel ultra-wideband common-mode filter (CMF) has been proposed based on the asymmetric short-stub loaded resonator (ASSLR). This CMF consists of a pair of meandered differential lines, the proposed resonator using ASSLR and the ground plane. By applying ASSLR to the CMF design, multiple resonant modes can be introduced in the single CMF unit-cell under the even-mode operation, and correspondingly generate four CM transmission zeros within 12 GHz. As a result, the simulated results show that the proposed CMF can achieve ultra-wide CM stopband from 2.5 to 11.1 GHz (Scc21< -10 dB) with 126.5% fractional bandwidth. In addition, with the low insertion loss and flat group delay for differential-mode, the proposed CMF is expected to keep good signal integrity of differential signals.
{"title":"Multi-Mode and Ultra-Wideband Common-Mode Filter Based on Asymmetric Short-Stub Loaded Resonator","authors":"Peng Zhou, Yongrong Shi, Wanchun Tang","doi":"10.1109/IEEE-IWS.2019.8804095","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804095","url":null,"abstract":"In this paper, a novel ultra-wideband common-mode filter (CMF) has been proposed based on the asymmetric short-stub loaded resonator (ASSLR). This CMF consists of a pair of meandered differential lines, the proposed resonator using ASSLR and the ground plane. By applying ASSLR to the CMF design, multiple resonant modes can be introduced in the single CMF unit-cell under the even-mode operation, and correspondingly generate four CM transmission zeros within 12 GHz. As a result, the simulated results show that the proposed CMF can achieve ultra-wide CM stopband from 2.5 to 11.1 GHz (Scc21< -10 dB) with 126.5% fractional bandwidth. In addition, with the low insertion loss and flat group delay for differential-mode, the proposed CMF is expected to keep good signal integrity of differential signals.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127545557","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803867
G. Shan, N. Zhang, Z. Yan, C. Shek
This paper presents high performance 0.34THz waveguide filters based on MEMS technology. The relationship between fabrication error and filter performance was studied and a quantitative model is given. The fabrication geometrical tolerance can be controlled to be lower than 5% for iris structures (and ±5μm for resonant cavities). Our test results show a good agreement with simulation results when fabrication error is less than ~5 µm, the test result shows a performance of ~0.5dB insertion with ~5.29% relative bandwidth.
{"title":"A Novel Terahertz Waveguide Filter Based on MEMS Technology","authors":"G. Shan, N. Zhang, Z. Yan, C. Shek","doi":"10.1109/IEEE-IWS.2019.8803867","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803867","url":null,"abstract":"This paper presents high performance 0.34THz waveguide filters based on MEMS technology. The relationship between fabrication error and filter performance was studied and a quantitative model is given. The fabrication geometrical tolerance can be controlled to be lower than 5% for iris structures (and ±5μm for resonant cavities). Our test results show a good agreement with simulation results when fabrication error is less than ~5 µm, the test result shows a performance of ~0.5dB insertion with ~5.29% relative bandwidth.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126642263","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804047
K. Rawat
This paper analyzes the appropriate design space for continuous mode power amplifiers that results into foster loads realizable with passive matching networks. An insight is presented to engineer the second harmonic loads to provide clockwise trajectory on Smith chart. This enables designers to choose the solutions which are feasible in terms of designing matching network. The scheme presented is validated with two waveform engineering based design examples using Continuous Class B/J and Continuous Class F modes of operation. A 15 W GaN HEMT transistors from Wolfspeed are used to design these power amplifiers to obtain high efficiency over a wide bandwidth.
本文分析了连续模式功率放大器的适当设计空间，从而使无源匹配网络可以实现培养负载。提出了一种设计二次谐波负载以在史密斯图上提供顺时针轨迹的方法。这使得设计者能够在设计匹配网络时选择可行的解决方案。采用连续B/J类和连续F类工作模式，通过两个基于波形工程的设计实例对该方案进行了验证。这些功率放大器采用Wolfspeed公司的15w GaN HEMT晶体管设计，以在宽带宽下获得高效率。
{"title":"Design Challenges In Continuous Mode Power Amplifiers","authors":"K. Rawat","doi":"10.1109/IEEE-IWS.2019.8804047","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804047","url":null,"abstract":"This paper analyzes the appropriate design space for continuous mode power amplifiers that results into foster loads realizable with passive matching networks. An insight is presented to engineer the second harmonic loads to provide clockwise trajectory on Smith chart. This enables designers to choose the solutions which are feasible in terms of designing matching network. The scheme presented is validated with two waveform engineering based design examples using Continuous Class B/J and Continuous Class F modes of operation. A 15 W GaN HEMT transistors from Wolfspeed are used to design these power amplifiers to obtain high efficiency over a wide bandwidth.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"477 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122740942","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804119
Xingxing Jiao, Junhong Wang, Z. Ying
A compact antenna system of two-port integrated UWB monopole antenna and frequency reconfigurable slot antenna for cognitive radio application is proposed. The antenna structure consists of a UWB monopole antenna and a frequency reconfigurable antenna. The UWB monopole antenna is designed to cover the entire UWB spectrum of 3.1-10.6GHz for spectrum sensing, and the frequency reconfigurable antenna is designed for communication. The antenna size is 40mm×26mm×0.8mm. The frequency reconfigurable antenna is a slot controlled by varectors to change the electrical length, and it can realize frequency switching between 5.2GHz, 5.5GHz and 5.8GHz, corresponding to frequency bands of WiMAX and WLAN. The frequency reconfigurable antenna is embedded in UWB monopole antenna and the isolation between them is larger than 15dB.
{"title":"A Compact Two-Port Integrated UWB and Frequency Reconfigurable Antenna System for Cognitive Radio Application","authors":"Xingxing Jiao, Junhong Wang, Z. Ying","doi":"10.1109/IEEE-IWS.2019.8804119","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804119","url":null,"abstract":"A compact antenna system of two-port integrated UWB monopole antenna and frequency reconfigurable slot antenna for cognitive radio application is proposed. The antenna structure consists of a UWB monopole antenna and a frequency reconfigurable antenna. The UWB monopole antenna is designed to cover the entire UWB spectrum of 3.1-10.6GHz for spectrum sensing, and the frequency reconfigurable antenna is designed for communication. The antenna size is 40mm×26mm×0.8mm. The frequency reconfigurable antenna is a slot controlled by varectors to change the electrical length, and it can realize frequency switching between 5.2GHz, 5.5GHz and 5.8GHz, corresponding to frequency bands of WiMAX and WLAN. The frequency reconfigurable antenna is embedded in UWB monopole antenna and the isolation between them is larger than 15dB.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129825331","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803862
Yan Li, S. Xiao, Zhangjing Wang
This paper proposed a wide-angle impedance matching (WAIM) layer for wideband phased array antennas. The proposed WAIM is based on the tightly coupled concept which introduces an additional capacitance between unit cells and provides a wide operating bandwidth. To study the scanning ability of the array, a 32 by infinite and an infinite by 32 linear arrays are analyzed. Viewing from the simulated results, by adding the proposed WAIM over a phased array antenna, the common bandwidth is improved to around 64.6% (from 5.37 to 10.5 GHz) with the scanning ability of ±60° in E-, H- and D-plane. Besides, the WAIM has the advantage of low profile and light weight properties.
{"title":"A Wideband Tightly Coupled Wide-angle Impedance Matching Layer","authors":"Yan Li, S. Xiao, Zhangjing Wang","doi":"10.1109/IEEE-IWS.2019.8803862","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803862","url":null,"abstract":"This paper proposed a wide-angle impedance matching (WAIM) layer for wideband phased array antennas. The proposed WAIM is based on the tightly coupled concept which introduces an additional capacitance between unit cells and provides a wide operating bandwidth. To study the scanning ability of the array, a 32 by infinite and an infinite by 32 linear arrays are analyzed. Viewing from the simulated results, by adding the proposed WAIM over a phased array antenna, the common bandwidth is improved to around 64.6% (from 5.37 to 10.5 GHz) with the scanning ability of ±60° in E-, H- and D-plane. Besides, the WAIM has the advantage of low profile and light weight properties.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128753626","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804094
Daotong Li, Dongwu Wang, Y. Liu, Xiaoquan Chen, Haowei Wu
A novel tri-band bandpass filter (BPF) based on ring multi-mode resonator (R-MMR) is proposed in this paper. The filter consists of an R-MMR and a pair of parallel coupled lines. Because the R-MMR is symmetrical, its resonant characteristics can be analyzed by using odd- and even-mode analysis method. When a couple of stubs are loaded on the ring resonator, six transmission poles and four transmission zeros are created, and a tri-band BPF is realized by employing a couple of parallel coupled lines. To miniaturize the size, the R-MMR is folded. A prototype is designed, fabricated and measured. Good agreement is obtained between the simulated and measured results.
{"title":"Compact Tri-Band Bandpass Filter Based on Ring Multi-Mode Resonator","authors":"Daotong Li, Dongwu Wang, Y. Liu, Xiaoquan Chen, Haowei Wu","doi":"10.1109/IEEE-IWS.2019.8804094","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804094","url":null,"abstract":"A novel tri-band bandpass filter (BPF) based on ring multi-mode resonator (R-MMR) is proposed in this paper. The filter consists of an R-MMR and a pair of parallel coupled lines. Because the R-MMR is symmetrical, its resonant characteristics can be analyzed by using odd- and even-mode analysis method. When a couple of stubs are loaded on the ring resonator, six transmission poles and four transmission zeros are created, and a tri-band BPF is realized by employing a couple of parallel coupled lines. To miniaturize the size, the R-MMR is folded. A prototype is designed, fabricated and measured. Good agreement is obtained between the simulated and measured results.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"382 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129456380","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804067
Cai Daomin
This work presents the design of a integrated power amplifier with a built-in analog predistorter. The amplifier is based on 0.25um GaAs pHEMT process. The power amplifier adopts a two-stage common source structure, and an analog predistorter is added between the stages to improve the linearity of the power amplifier. The analog predistorter has a simple structure, low insertion loss and high integration, which is suitable for on-chip integration. The gain of amplifier is greater than 25dB in 16-18GHz. The IMD3 can achieve a maximum improvement of 30dB near the saturation power back-off of 3dB.
{"title":"Design of Ku-band monolithic integrated power amplifier with analog predistorter","authors":"Cai Daomin","doi":"10.1109/IEEE-IWS.2019.8804067","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804067","url":null,"abstract":"This work presents the design of a integrated power amplifier with a built-in analog predistorter. The amplifier is based on 0.25um GaAs pHEMT process. The power amplifier adopts a two-stage common source structure, and an analog predistorter is added between the stages to improve the linearity of the power amplifier. The analog predistorter has a simple structure, low insertion loss and high integration, which is suitable for on-chip integration. The gain of amplifier is greater than 25dB in 16-18GHz. The IMD3 can achieve a maximum improvement of 30dB near the saturation power back-off of 3dB.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130377273","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803942
Z. Zhuang, Nan Hu, Yongle Wu, Mengdan Kong, Weimin Wang, Yuan’an Liu
In this paper, a novel dual-band bandpass filter with multiple transmission poles is proposed involving 4G and 5G bands. Its circuit configuration is composed of the modified coupled-line structures and step-impedance open-circuited stubs. The analyzed cases are provided in detail. For demonstration, a design prototype operating at 2.4 GHz and 5 GHz with 15-dB return loss and stopband rejection at least is simulated, fabricated, and measured. Good agreements between simulated and measured results are obtained.
{"title":"Multi-transmission Poles Dual-band Bandpass Filter with Extended Bandwidth","authors":"Z. Zhuang, Nan Hu, Yongle Wu, Mengdan Kong, Weimin Wang, Yuan’an Liu","doi":"10.1109/IEEE-IWS.2019.8803942","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803942","url":null,"abstract":"In this paper, a novel dual-band bandpass filter with multiple transmission poles is proposed involving 4G and 5G bands. Its circuit configuration is composed of the modified coupled-line structures and step-impedance open-circuited stubs. The analyzed cases are provided in detail. For demonstration, a design prototype operating at 2.4 GHz and 5 GHz with 15-dB return loss and stopband rejection at least is simulated, fabricated, and measured. Good agreements between simulated and measured results are obtained.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121709825","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}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804012
Wei Yu, W. Qin, Jian‐Xin Chen
This paper presents a dandelion topology for multi-port (1-to-N) filtering power divider, which can be applied to either the single-ended or balanced designs. Compared with the traditional tree topology, the number of resonators is reduced significantly. Meanwhile, the filtering order and the port number are mutually independent. Based on this topology, the two functions of filtering and power dividing can be designed independently. Three prototypes with equal/unequal split ratio are simulated to show the advantages of the proposed topology.
{"title":"A Novel Dandelion Topology for Multiport Filtering Power Divider","authors":"Wei Yu, W. Qin, Jian‐Xin Chen","doi":"10.1109/IEEE-IWS.2019.8804012","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804012","url":null,"abstract":"This paper presents a dandelion topology for multi-port (1-to-N) filtering power divider, which can be applied to either the single-ended or balanced designs. Compared with the traditional tree topology, the number of resonators is reduced significantly. Meanwhile, the filtering order and the port number are mutually independent. Based on this topology, the two functions of filtering and power dividing can be designed independently. Three prototypes with equal/unequal split ratio are simulated to show the advantages of the proposed topology.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121860194","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}
A substrate integrated waveguide (SIW) embedded metal-via array H-plane horn antenna with slots is presented. With additional via and a pair of slots etched on metallization, antenna gain is higher and the bandwidth is wider. Simulation shows that the enhanced gain of 7.74dBi at 35GHz is obtained and the widen impedance bandwidth is 15.7% from 32.10 to 37.60GHz, whereas the simulated gain of the conventional antenna is 4.86dBi. The proposed antenna also shows a suppressed back-lobe radiation with a 34 dB front-to-back (FTB) ratio.
{"title":"Substrate Integrated Metal-Via Array Horn Antenna","authors":"Yezhou Yang, Zhipeng Zhou, Guo-peng Yang, Jin-ping Zhang","doi":"10.1109/IEEE-IWS.2019.8803953","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803953","url":null,"abstract":"A substrate integrated waveguide (SIW) embedded metal-via array H-plane horn antenna with slots is presented. With additional via and a pair of slots etched on metallization, antenna gain is higher and the bandwidth is wider. Simulation shows that the enhanced gain of 7.74dBi at 35GHz is obtained and the widen impedance bandwidth is 15.7% from 32.10 to 37.60GHz, whereas the simulated gain of the conventional antenna is 4.86dBi. The proposed antenna also shows a suppressed back-lobe radiation with a 34 dB front-to-back (FTB) ratio.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115851484","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：