{"title":"A K-band Up-conversion Mixer in 65nm CMOS","authors":"Haipeng Duan, Xu Wu, Lianming Li, Dongming Wang","doi":"10.1109/iwem53379.2021.9790411","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790411","url":null,"abstract":"This paper presents a K-band up-conversion mixer, which consists of an active Gilbert mixer cell and a radio frequency (RF) buffer. Fabricated in a 65nm CMOS technology, the up-conversion mixer achieves a conversion gain (CG) of 12.8 dB, an output 1-dB compression point (OP1dB) of 2.5 dBm and a third-order output intercept point (OIP3) of 14.7 dBm, while depleting a 31-mW DC power dissipation at a 1.2-V supply voltage.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133165511","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}
{"title":"Hybrid-Structure Filters by Combining SIW and Microstrip Technologies","authors":"Yilong Zhu, Yuandan Dong","doi":"10.1109/iwem53379.2021.9790607","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790607","url":null,"abstract":"Substrate integrated waveguide (SIW) and microstrip are the most widely used technologies that can could be easily integrated with other planar circuits, providing excellent platforms to implement various microwave filters. In this paper, the general filter design methodology by combing both the two technologies is presented. This hybrid approach shows some particular advantages such as wide stopband, compact size, moderate quality factor, independent coupling path for each SIW mode, and easily achievable cross coupling for SIW cavities without extra negative coupling structures. Four hybrid-structure filters, which present wide-stopband characteristics, flexible dual-mode responses, and quasi-elliptical dual-band function, are presented, reviewed and discussed.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133230182","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}
{"title":"A 6.3-8.7 GHz Phase-Locked Loop in 65nm CMOS","authors":"Pizeng Zhou, Liang Wu, Chao Li, Zehui Kang, S. Zheng, Q. Xue","doi":"10.1109/iwem53379.2021.9790563","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790563","url":null,"abstract":"This paper presents a fully-integrated charge-pump phase-locked loop (CPPLL) for 5G applications. The PLL is composed of a phase and frequency detector (PFD), a charge pump (CP), a low-pass filter (LPF), a voltage-controlled oscillator (VCO) and a programmable divider. To achieve low phase noise, the VCO employs class-C topology. Implemented in 65-nm CMOS, the PLL measures an output frequency range from 6.3 to 8.7 GHz, with phase noise of -122.9 dBc/Hz and -116.6 dBc/Hz @1MHz offset, respectively. The PLL consumes 50 mW and occupies a core area of 0.8 mm × 0.9 mm excluding the pads.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133436354","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}
{"title":"Analysis of gold-plated polyester film for SE measurement","authors":"Chen Chaochan","doi":"10.1109/iwem53379.2021.9790633","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790633","url":null,"abstract":"The flanged coaxial tester is designed to measure shielding effectiveness (SE) of planar electromagnetic shielding materials in far field. Based on the previous studies on tester, it developed a standard reference specimen to validate the entire testing system is working well according to ASTM D4935-2018. Gold-plated polyester film is developed by sputtering gold on polymers using high-frequency sputtering equipment. It measured the surface resistivity, then analyzed the relationship between SE and surface resistivity by theoretical calculation and measurement. In the end, it determined the measurement uncertainty, which verifies good system repeatability.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134270074","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}
{"title":"A New Methodology to Build the ICEM-CE Model for Microcontroller Units","authors":"Li Yuanhao, Xie Shuguo, Chen Yishu","doi":"10.1109/iwem53379.2021.9790696","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790696","url":null,"abstract":"In order to predict the conduction emission performance of a circuit board, manufacturers need to provide the electromagnetic compatibility (EMC) model of the chip to users. The Integrated circuit emission model-conducted emissions (ICEM-CE) modelling method proposed in standard IEC62433-2 can target various active chips, but lacks specificity for chips with typical characteristics of electromagnetic compatibility. In this paper, we propose a parametric model construction method for microcontroller units (MCUs). By studying the characteristics of the internal activity (IA) of the MCUs, the universal prior information for MCUs is obtained, and the parameterized model is constructed.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114351439","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}
{"title":"77GHz Comb Array Antenna Based on FOWLP for Automotive Radar Applications","authors":"Xiao-dong Cheng, Zihao Chen","doi":"10.1109/iwem53379.2021.9790593","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790593","url":null,"abstract":"An H-shape slot coupled automotive radar microstrip comb array antenna is proposed in this paper. The designed antenna has the advantages of low profile, low cost and easy integration with RF chips. In order to miniaturize the size and verify the applicability of the proposed antenna for automotive radar applications, one 1×5 array is designed at 77-GHz. The simulation results show that the -10 dB input impedance bandwidth covers the 77-GHz band and the maximal peak realized gain is 10.14 dB at 77 GHz. In addition, compared with the traditional series fed microstrip rectangular patch array antenna, the comb array antenna has more compact structure.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116591455","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}
{"title":"Design and Simulation for 5G Millimeter-wave Plane Wave Generator","authors":"Hao Sun, Yuxin Ren, Xiaolong Liu, Ying Zhu","doi":"10.1109/iwem53379.2021.9790505","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790505","url":null,"abstract":"Plane wave generator (PWG) is a phased array system that can create a plane wave in the quiet zone (QZ). By setting a number of appropriate complex weights on PWG elements, wireless devices can be measured at a shorter distance. However, for the 5G millimeter-wave frequency range, the PWG system confronts many new challenges due to high operating frequency and huge bandwidth. In this paper, the plane wave synthesis is discussed from the point view of sparse representation, and a novel orthogonal match pursuit algorithm has been proposed for PWG design. Moreover, plenty of simulation works have been performed in this paper. The simulation results show that the proposed algorithm can synthesize the QZ over a wide frequency range with limited excited PWG sources.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116708986","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}
{"title":"A 3D-Printing Quasi-Ellipsoidal Lens Antenna","authors":"Zi-Yu Pang, Xiao-Yu Ma, Xing-Quan Zhuo, Cheng-Yu Wang, Sheng-Sen You, Guanhua Huang","doi":"10.1109/iwem53379.2021.9790397","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790397","url":null,"abstract":"A unique 3D-printing quasi-ellipsoidal dielectric lens antenna with high gain is proposed in this work for Ka-band application. For proof of concept, the quasi-ellipsoidal dielectric lens antenna consists of a waveguide and dielectric lens (DL). The DL consists of a hemisphere and a spherical cap with the same size of contacting plane as the hemisphere, which has different permittivity of 2.9 and 3.9, respectively. The simulation results show that the designed lens antenna not only has excellent electrical performance with an average |S11| < -14 dB in the bandwidth of 26-30 GHz, but also has the merit of greatly improving antenna gain. The quasi-ellipsoidal DL with a long axis of 50 mm and a short axis of 42 mm can increase the gain of the waveguide from 6.7 dBi to about 20 dBi.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116970791","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}
Shunping Wan, Wen-hua Chen, Guansheng Lv, Long Chen, Zhenghe Feng
{"title":"A Fully Integrated High-Efficiency Three-stage Doherty Power Amplifier for Small-cell application","authors":"Shunping Wan, Wen-hua Chen, Guansheng Lv, Long Chen, Zhenghe Feng","doi":"10.1109/iwem53379.2021.9790358","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790358","url":null,"abstract":"In this paper, a high-performance three-stage Doherty power amplifier was designed for 5G small-cell base station (SBSs) applications and fully fabricated in GaAs HBT technology with a dimension of 2.2 × 3mm2. An asymmetric configuration and even power splitting was utilized to get deeply back-off region and good performance. An optimal output match network is applied to overcome the problem from high output power. Test results show that the average power-add efficiency (PAE) above 30% and power gain of 34dB were attained for a 20MHz long-term evolution signal with an 8-dB peak-to-average power ratio. The adjacent channel leakage ratio was -30.2 dBc without any linearization, and it was improved to -50.3 dBc with a digital pre-distortion linearization.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124832752","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}
{"title":"Theoretical Method and Analysis of Spherical Near-field to Far-field Transformation Based on Equivalence Principle","authors":"Ying Zhu, Yuchen Ma, Chong Pan, Xiang Wu","doi":"10.1109/iwem53379.2021.9790436","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790436","url":null,"abstract":"In this paper, a low-complexity near-field to far-field transformation (NF2FFT) method is proposed. The method employs Huygen’s and Schelkunoff principles respectively, and the difference lies in whether to adopt the equivalent electric current and the integral limitations. As an example, NF2FFT is implemented on a horn antenna. The calculation results show that the proposed method is a candidate solution to near-field antenna measurement.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123023332","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}