Pub Date : 2016-06-08DOI: 10.1109/ICMMT.2016.7761736
V. Doychinov, D. Steenson, A. Abadi, C. Paoloni
This work explores a rapid design and manufacturing approach to realize complex 3D pillar type filter and transmission line structures for applications in the 220 - 325 GHz range and which cannot be economically reproduced by conventional machining processes or present rapid prototyping methods. The significance of this investigation is that at sub-millimetre-wave or THz frequencies, where the waveguide features are less than 100μm and the skin depths are less than 200nm, the exact conductor shape and surface roughness have a significant electrical effect and any variations result in an important disagreement between the modelled and measured characteristics. This is a proof of concept validation of the rapid manufacturing approach and is aimed at paving the way to a range of THz passive waveguide components, where the availability and cost of such components is typically prohibitive and where the surface roughness is minimized and highly reproducible. Using this approach the fabrication times can be as rapid as a few days and can yield many hundreds of highly reproducible millimetre scale components.
{"title":"Low-cost method for waveguide device components fabrication at 220 – 325 GHz","authors":"V. Doychinov, D. Steenson, A. Abadi, C. Paoloni","doi":"10.1109/ICMMT.2016.7761736","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761736","url":null,"abstract":"This work explores a rapid design and manufacturing approach to realize complex 3D pillar type filter and transmission line structures for applications in the 220 - 325 GHz range and which cannot be economically reproduced by conventional machining processes or present rapid prototyping methods. The significance of this investigation is that at sub-millimetre-wave or THz frequencies, where the waveguide features are less than 100μm and the skin depths are less than 200nm, the exact conductor shape and surface roughness have a significant electrical effect and any variations result in an important disagreement between the modelled and measured characteristics. This is a proof of concept validation of the rapid manufacturing approach and is aimed at paving the way to a range of THz passive waveguide components, where the availability and cost of such components is typically prohibitive and where the surface roughness is minimized and highly reproducible. Using this approach the fabrication times can be as rapid as a few days and can yield many hundreds of highly reproducible millimetre scale components.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127180963","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7761719
Fan Guoqing, Zhang Shibin, Zhao Aiying, Han Hengmin
A broadband detector designed for operation from 10MHz to 67GHz based on zero-bias low barrier Schottky diodes is presented in this paper. Accurate design and electromagnetic co-simulation technology are used in ultra-broadband circuit matching optimization to obtain excellent port match and good frequency response. Simulation and measured results of the broadband coaxial detector are given. The measured results show that RF port SWR is less than 1.8; measured sensitivity is 1300 mV/mW typically in the whole frequency band and near 1850mV/mW at 34GHz.
{"title":"Design of a 0.01∼67GHz broadband coaxial detector","authors":"Fan Guoqing, Zhang Shibin, Zhao Aiying, Han Hengmin","doi":"10.1109/ICMMT.2016.7761719","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761719","url":null,"abstract":"A broadband detector designed for operation from 10MHz to 67GHz based on zero-bias low barrier Schottky diodes is presented in this paper. Accurate design and electromagnetic co-simulation technology are used in ultra-broadband circuit matching optimization to obtain excellent port match and good frequency response. Simulation and measured results of the broadband coaxial detector are given. The measured results show that RF port SWR is less than 1.8; measured sensitivity is 1300 mV/mW typically in the whole frequency band and near 1850mV/mW at 34GHz.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124891508","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762377
Jiqin He, Wenping Ren, Dongya Shen, Jie Zeng, Xiupu Zhang, Hong Yuan
In this paper, a novel comprehensive transmitter architecture has been proposed, which enables the concurrent transmission of two separate frequency bands by carrier aggregation. For different frequencies, the proposed transmitter can simultaneously employ 1-bit Low-pass and Band-pass delta-sigma modulators structures, or employ hybrid structures. Carrier frequencies are equal to oversampling frequencies of modulators. Besides, signals on two carriers are not interfered with each other to ensure transmission dual-band signal. Performance analysis is simulated by using Matlab/Simulink. The simulation results achieve high signal-to-noise radio and show the effectiveness of the proposed architecture.
{"title":"Dual-band transmitters based on Lowpass and Bandpass delta-sigma modulators","authors":"Jiqin He, Wenping Ren, Dongya Shen, Jie Zeng, Xiupu Zhang, Hong Yuan","doi":"10.1109/ICMMT.2016.7762377","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762377","url":null,"abstract":"In this paper, a novel comprehensive transmitter architecture has been proposed, which enables the concurrent transmission of two separate frequency bands by carrier aggregation. For different frequencies, the proposed transmitter can simultaneously employ 1-bit Low-pass and Band-pass delta-sigma modulators structures, or employ hybrid structures. Carrier frequencies are equal to oversampling frequencies of modulators. Besides, signals on two carriers are not interfered with each other to ensure transmission dual-band signal. Performance analysis is simulated by using Matlab/Simulink. The simulation results achieve high signal-to-noise radio and show the effectiveness of the proposed architecture.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125101568","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762485
Wei-dong Hu, Yang-yi Zhao, Hao Ren, Jin-jia Ji, Meng-da Wu, L. Xin
At present, the vast majority of 3mm band measurement systems in China tend to use vector network analyzer, which has very limited use range and poor flexibility, instead of using a dedicated radar system. In this paper, a dedicated 94GHz high resolution stepped frequency radar for target characteristics measurement of 3mm band is designed and implemented. Some simulations have been carried out, and the results match the outdoor range experiments quite well. With small volume and light weight,it can be used flexibly both in the anechoic chamber and outdoor range. It has a variety of measurement modes, high-power, and ultra-high resolution, thus making it at the advanced level.
{"title":"Design and implementation of a 94GHz high resolution stepped frequency radar","authors":"Wei-dong Hu, Yang-yi Zhao, Hao Ren, Jin-jia Ji, Meng-da Wu, L. Xin","doi":"10.1109/ICMMT.2016.7762485","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762485","url":null,"abstract":"At present, the vast majority of 3mm band measurement systems in China tend to use vector network analyzer, which has very limited use range and poor flexibility, instead of using a dedicated radar system. In this paper, a dedicated 94GHz high resolution stepped frequency radar for target characteristics measurement of 3mm band is designed and implemented. Some simulations have been carried out, and the results match the outdoor range experiments quite well. With small volume and light weight,it can be used flexibly both in the anechoic chamber and outdoor range. It has a variety of measurement modes, high-power, and ultra-high resolution, thus making it at the advanced level.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128968191","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7761825
Jia. Zhou, J. Wen, G. Su, Xianghong Gao, Meng Jin
This paper presents a low-power, V-band doubler. A floating-Ground shielding transformer balun achieved a good balanced performance and input matching by using a central capacitor-based compensation technique. The doubler exhibits a 3-dB conversion gain (CG) bandwidth of 14 GHz range from 58 to 72 GHz and demonstrates a peak CG of -6.5 dB and peak efficiency of 7.7% with an output power of 0 dBm at 64 GHz. The doubler is fabricated in 65 nm CMOS process with chip size of 663×492 μm2 and consumes 9.6-12.8 mW power.
{"title":"A V-band push-push frequency doubler using floating-Ground shield transformer in 65-nm CMOS technology","authors":"Jia. Zhou, J. Wen, G. Su, Xianghong Gao, Meng Jin","doi":"10.1109/ICMMT.2016.7761825","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7761825","url":null,"abstract":"This paper presents a low-power, V-band doubler. A floating-Ground shielding transformer balun achieved a good balanced performance and input matching by using a central capacitor-based compensation technique. The doubler exhibits a 3-dB conversion gain (CG) bandwidth of 14 GHz range from 58 to 72 GHz and demonstrates a peak CG of -6.5 dB and peak efficiency of 7.7% with an output power of 0 dBm at 64 GHz. The doubler is fabricated in 65 nm CMOS process with chip size of 663×492 μm2 and consumes 9.6-12.8 mW power.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130701109","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762368
W. Yan, C. G. Liu, Z. Ding, Z. P. Wu
This paper expounds on the design of Doherty power amplifier. The principle of Doherty power amplifier is analyzed detailedly. We also introduce the procedure of designing matching networks. A Doherty power amplifier at band 2.11-2.17GHz is simulated with the MRF8S21120H transistor. The P1dB is above 52dBm, and its efficiency is above 41% in 6dB back-off region. It demonstrates an efficiency improvement of 12.1% at 6dB back-off point. And the upper IMD3 is -36.4dBc, the lower IMD3 is -36dBc, at 6.5dB back-off point. It has an acceptable linearity.
{"title":"Design of Doherty power amplifier for base-station application","authors":"W. Yan, C. G. Liu, Z. Ding, Z. P. Wu","doi":"10.1109/ICMMT.2016.7762368","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762368","url":null,"abstract":"This paper expounds on the design of Doherty power amplifier. The principle of Doherty power amplifier is analyzed detailedly. We also introduce the procedure of designing matching networks. A Doherty power amplifier at band 2.11-2.17GHz is simulated with the MRF8S21120H transistor. The P1dB is above 52dBm, and its efficiency is above 41% in 6dB back-off region. It demonstrates an efficiency improvement of 12.1% at 6dB back-off point. And the upper IMD3 is -36.4dBc, the lower IMD3 is -36dBc, at 6.5dB back-off point. It has an acceptable linearity.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125588158","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762364
Lv-wei Chen, Y. Ge
This paper presents a novel design and demonstration of a linearly polarized lens antenna with planar antenna feeders. The lens consists of four identical metallic array printed on three identical dielectric slabs. The thickness is only 3 mm or 0.22 λ at the operating frequency, 22 GHz. To make the antenna structure compact, the planar small antenna feeder instead of a horn is investigated. Simulations and experiments have been conducted to validate the design. The measured results show that a 3-dB gain bandwidth of 15% and a peak gain of 25.1 dBi are achieved.
{"title":"A K-band flat lens antenna with a slot-fed antenna feeder","authors":"Lv-wei Chen, Y. Ge","doi":"10.1109/ICMMT.2016.7762364","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762364","url":null,"abstract":"This paper presents a novel design and demonstration of a linearly polarized lens antenna with planar antenna feeders. The lens consists of four identical metallic array printed on three identical dielectric slabs. The thickness is only 3 mm or 0.22 λ at the operating frequency, 22 GHz. To make the antenna structure compact, the planar small antenna feeder instead of a horn is investigated. Simulations and experiments have been conducted to validate the design. The measured results show that a 3-dB gain bandwidth of 15% and a peak gain of 25.1 dBi are achieved.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126878172","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762463
W. Yan, Chengguo Liu, Shuai Zhou, Z. Wu, Jingwei Zhang
Power amplifier plays a great important role in modern wireless communication system. In this paper, a class-AB power amplifier working in 2.11GHz-2.17GHz is designed and fabricated, tuned, measured. The measurement results show that the output power at 1dB compression point (P1dB) is 46.5dBm along with a drain efficiency of 36.9% at central frequency 2.14GHz. The upper TOI measured using a two-tone signal is 52.98 dBm, and the lower TOI 53.04 dBm. The results of simulation and measurement are compared and analyzed.
{"title":"Design and measurement analysis of Class AB power amplifier","authors":"W. Yan, Chengguo Liu, Shuai Zhou, Z. Wu, Jingwei Zhang","doi":"10.1109/ICMMT.2016.7762463","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762463","url":null,"abstract":"Power amplifier plays a great important role in modern wireless communication system. In this paper, a class-AB power amplifier working in 2.11GHz-2.17GHz is designed and fabricated, tuned, measured. The measurement results show that the output power at 1dB compression point (P1dB) is 46.5dBm along with a drain efficiency of 36.9% at central frequency 2.14GHz. The upper TOI measured using a two-tone signal is 52.98 dBm, and the lower TOI 53.04 dBm. The results of simulation and measurement are compared and analyzed.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"270 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124371175","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762537
Xiaping Yu, Jian Dong, Yu Hu, Huabing Ren, Donglin Li, J. Zhou, Kongliang Rong
A bending dipole RFID (Radio Frequency Identification) tag antenna at Ultra High Frequency (UHF) band is presented to meet the requirements of the antenna miniaturization. The overall dimension of the tag antenna is only 55×12 mm2.The input impedance of the antenna is about 43 + j800Ω with Philips EPC UCODE Gen 2 RFID tag microchip. The simulation results show that the designed antenna has a wide impedance bandwidth, covering 840-845MHz and 920-925MHz UHF band, and has a good return loss value and omni-direction, which can meet the practical requirements of RFID tag antenna.
为满足天线小型化的要求，提出了一种超高频(UHF)弯曲偶极子RFID标签天线。标签天线的整体尺寸仅为55×12 mm2。天线的输入阻抗约为43 + j800Ω，采用飞利浦EPC UCODE Gen 2 RFID标签微芯片。仿真结果表明，所设计的天线具有较宽的阻抗带宽，覆盖840-845MHz和920-925MHz的UHF频段，具有良好的回波损耗值和全向性，能够满足RFID标签天线的实际要求。
{"title":"Design of a bending dipole RFID antenna at UHF band","authors":"Xiaping Yu, Jian Dong, Yu Hu, Huabing Ren, Donglin Li, J. Zhou, Kongliang Rong","doi":"10.1109/ICMMT.2016.7762537","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762537","url":null,"abstract":"A bending dipole RFID (Radio Frequency Identification) tag antenna at Ultra High Frequency (UHF) band is presented to meet the requirements of the antenna miniaturization. The overall dimension of the tag antenna is only 55×12 mm2.The input impedance of the antenna is about 43 + j800Ω with Philips EPC UCODE Gen 2 RFID tag microchip. The simulation results show that the designed antenna has a wide impedance bandwidth, covering 840-845MHz and 920-925MHz UHF band, and has a good return loss value and omni-direction, which can meet the practical requirements of RFID tag antenna.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129179051","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 : 2016-06-05DOI: 10.1109/ICMMT.2016.7762374
Yin Yue, Jianyi Zhou
This paper presents a low cost and efficient method to compensate the phase and magnitude errors of transmitting ultra-wideband (UWB) linear frequency modulation (LFM) waveform with complex pre-distortion correction coefficients. In this method, a high linearity LFM waveform is generated by a direct digital synthesis (DDS) module. The phase and magnitude errors of the output LFM signal are sampled and analyzed by a digital oscilloscope. The pre-distortion coefficients can be calculated according to the measured data. The process of compensation is implemented by modulating the LFM waveform with pre-distortion coefficients from baseband signals. To verify this method, a wideband LFM waveform generator with predistortion compensation is designed and tested. The measured results show that, with compensation, the magnitude and phase errors can be evidently improved (the peak magnitude deviation is from 4.8 dB to 0.2dB, the peak phase deviation is from 60° to 15°, and the linearity performance of LFM waveform is improved to be less than 7×10-5) within a 1.5GHz-wide frequency bandwidth.
{"title":"UWB LFM waveform phase and magnitude errors compensation using RF modulation","authors":"Yin Yue, Jianyi Zhou","doi":"10.1109/ICMMT.2016.7762374","DOIUrl":"https://doi.org/10.1109/ICMMT.2016.7762374","url":null,"abstract":"This paper presents a low cost and efficient method to compensate the phase and magnitude errors of transmitting ultra-wideband (UWB) linear frequency modulation (LFM) waveform with complex pre-distortion correction coefficients. In this method, a high linearity LFM waveform is generated by a direct digital synthesis (DDS) module. The phase and magnitude errors of the output LFM signal are sampled and analyzed by a digital oscilloscope. The pre-distortion coefficients can be calculated according to the measured data. The process of compensation is implemented by modulating the LFM waveform with pre-distortion coefficients from baseband signals. To verify this method, a wideband LFM waveform generator with predistortion compensation is designed and tested. The measured results show that, with compensation, the magnitude and phase errors can be evidently improved (the peak magnitude deviation is from 4.8 dB to 0.2dB, the peak phase deviation is from 60° to 15°, and the linearity performance of LFM waveform is improved to be less than 7×10-5) within a 1.5GHz-wide frequency bandwidth.","PeriodicalId":438795,"journal":{"name":"2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122741995","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}
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