Junho Park, Seung Yoon Lee, Yeonwoo Kim, Jae-Yeong Lee, W. Hong
{"title":"Hybrid Antenna Module Concept for 28 GHz 5G Beamsteering Cellular Devices","authors":"Junho Park, Seung Yoon Lee, Yeonwoo Kim, Jae-Yeong Lee, W. Hong","doi":"10.1109/IMWS-5G.2018.8484662","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484662","url":null,"abstract":"This paper presents a novel hybrid antenna module concept at millimeter-waves to realize spherical beamsteering coverage that is structurally and systematically compatible with present day cellular devices. The hybrid antenna module concept coherently combines two existing concepts - the AiP (Antenna-in-Package) and AoD (Antenna-on-Display) to steer the antenna main lobe in the end-fire and broadside direction. A compact end-fire antenna array (AiP) and a fully optically transparent antenna array (AoD) achieve impedance bandwidth (2:1 VSWR) of 1.67 GHz and 0.85 GHz respectively at 28 GHz. Investigation in the far-field ascertains hat the 4-element end-fire AiP and the 16-element broadside AoD exhibit a realized gain of 9.2 dBi and 12.8 dBi in the θ = 90° and θ = 0° respectively.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127877893","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":"Riemann-Pump based RF-Power DACs in GaN Technology for 5G Base Stations","authors":"M. Weiß, C. Friesicke, R. Quay, O. Ambacher","doi":"10.1109/IMWS-5G.2018.8484695","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484695","url":null,"abstract":"This paper introduces two realizations of a Riemann-Pump based digital transmitter geared towards software defined radio in 5G systems. In contrast to traditional digital-to-analog converter (DAC) concepts, the Riemann Pump exhibits a higher signal-to-noise ratio (SNR). Since the used 0.25 μm gallium nitride (GaN) technology has a transit frequency of 30 GHz, an oversampling ratio (OSR) of five for the targeted frequency range from DC to 6 GHz is enabled. As the Riemann Pump serves as a digital driver, a co-integration with a suitable wideband power amplifier is possible to reach high power levels. A hybrid assembly is compared to the fully integrated Riemann Pump circuit in GaN technology. The world’s first measurement data of a two bit resolution Riemann Pump in GaN technology are discussed. Radio frequency (RF) power in the watt level range is measured for frequencies between 0.5 GHz - 12 GHz into a capacitive load representing the input capacitance of a power amplifier.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115391026","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":"OFDM-like High Order Backscatter Modulation","authors":"R. Correia, N. Carvalho","doi":"10.1109/IMWS-5G.2018.8484348","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484348","url":null,"abstract":"Backscatter communication has emerged as a promising technology for green communications and future IoT. This paper studies high order backscatter communication over OFDM carriers. For this purpose, a bank of four band-pass filters has been designed and implemented as well as four 4-QAM backscatter modulators. A prototype of the system is proposed which operate in four different frequencies, 2.39 GHz, 2.46 GHz, 2.57 GHz and 2.67 GHz. Further developments of this system could fulfill the promise of ambient backscatter communications over OFDM carriers in the air.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123129100","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 novel PAPR reduction method for OCDM-based radar-communication signal","authors":"Xin Lv, Jingqi Wang, Zhisheng Jiang, Wenjie Jiao","doi":"10.1109/IMWS-5G.2018.8484372","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484372","url":null,"abstract":"Waveform design for joint radar-communication system plays an important role in recent years. In this paper, we present an integrated radar and communication signal based on the orthogonal chirp division multiplexing (OCDM) signal which embeds communication data in each mutually orthogonal chirp radar signal. Furthermore, a novel approach is proposed to reduce peak-to-average power ratio (PAPR) of the joint signal. Part of the chirp tones are used to embed communication information, while the other tones are used merely to generate the peak canceling signal. Without extra spectrum occupy in conventional tone reservation (TR), the proposed method can make full use of spectrum resources. Simulation results show that the proposed method can efficiently reduce PAPR of the joint signal with decent radar and communication performance.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126339892","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 C-band GaAs Doherty Power Amplifier MMIC with Compact Size and 1-GHz Bandwidth","authors":"Guansheng Lv, Wen-hua Chen, Zhenghe Feng","doi":"10.1109/IMWS-5G.2018.8484553","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484553","url":null,"abstract":"This paper presents a fully integrated C-band Doherty power amplifier (DPA) in 0.25-um GaAs pHEMT process. The inductive component number and inductance values in the output network of the DPA are minimized, which reduces the chip size significantly. The input matching is optimized in the large signal region for both main power amplifier (PA) and auxiliary PA to achieve higher efficiency and output power. The performance of DPA is enhanced by using an uneven input splitter to deliver more power to main PA. The fabricated DPA exhibits a bandwidth of 1 GHz, with the chip area of only 1.8 mm × 2.2 mm. In the frequency range of 4.6 GHz to 5.6 GHz, the DPA realizes a saturation output power of 29.8 dBm – 31 dBm, a peak power-added efficiency (PAE) of 41% – 46%, and a PAE at 6 dB power back-off of 24% – 27%. The small signal gain is higher than 11 dB, in the large bandwidth from 4.5 GHz to 6.2 GHz.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115500284","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}
Prasidh Ramabadran, S. Madhuwantha, P. Afanasyev, R. Farrell, J. Dooley
{"title":"Wideband Interleaved Vector Modulators for 5G Wireless Communications","authors":"Prasidh Ramabadran, S. Madhuwantha, P. Afanasyev, R. Farrell, J. Dooley","doi":"10.1109/IMWS-5G.2018.8484496","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484496","url":null,"abstract":"Next generation wireless communication systems such as fifth generation mobile communications and high throughput satellites have promised a step increase in the rate at which digital data can be transmitted. This requires wideband modulators consisting of high speed digital to analogue converters and RF up-converters to generate the wideband signal of interest. In this paper we demonstrate a scheme to generate a wide bandwidth modulated signal by bandwidth interleaving multiple modulators of narrower bandwidths. The proposed scheme is experimentally validated with measured results on an 8PSK signals of symbol rate 80 MSPS with modulation characteristics in accordance with DVB-S2 standard.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127043513","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}
M. A. B. Abbasi, H. Tataria, V. Fusco, M. Matthaiou
{"title":"On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications","authors":"M. A. B. Abbasi, H. Tataria, V. Fusco, M. Matthaiou","doi":"10.1109/IMWS-5G.2018.8484443","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484443","url":null,"abstract":"This work demonstrates the sensitivity of lens antenna arrays operating at millimeter-wave (mmWave) frequencies. Considering a Rotman lens array in receive mode, our investigation focuses on its most imperative defect: aberration of electromagnetic (EM) energy. Aberration leads to spillover of electric fields to neighboring ports, reducing the lens’ ability to focus the EM energy to a desired port. With full EM simulations, we design a 28 GHz, 13 beam and 13 array port Rotman lens array to characterize its performance with the aforementioned impairment. Our findings show that the impact of aberration is more pronounced when the beam angles are close to the array end-fire. More critically, the corresponding impact of aberration on the desired signal and interference powers is also investigated for an uplink multiuser cellular system operating at 28 GHz. The presented results can be used as a reference to re-calibrate our expectations for Rotman lens arrays at mmWave frequencies.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125678844","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}
Breandán Ó hAnnaidh, P. Fitzgerald, H. Berney, Ramji Lakshmanan, Nigel Coburn, S. Geary, B. Mulvey
{"title":"Devices and Sensors Applicable to 5G System Implementations","authors":"Breandán Ó hAnnaidh, P. Fitzgerald, H. Berney, Ramji Lakshmanan, Nigel Coburn, S. Geary, B. Mulvey","doi":"10.1109/IMWS-5G.2018.8484316","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484316","url":null,"abstract":"This paper describes some of the device technologies currently in development at Analog Devices, focusing on key areas for future integration within the 5G ecosystem. Three distinct device technologies are examined that will enhance and enable system implementation and are for use in dedicated applications. The first is a state-of-the-art RF MEMs switch, the second, an Energy Harvester for IoT applications and the third, an RF SAW filter.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127851555","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":"RF Energy Harvesting with Dense Rectenna-Arrays Using Electrically Small Rectennas Suitable for IoT 5G Embedded Sensor Nodes","authors":"S. D. Assimonis, V. Fusco","doi":"10.1109/IMWS-5G.2018.8484384","DOIUrl":"https://doi.org/10.1109/IMWS-5G.2018.8484384","url":null,"abstract":"This work presents a systematic study of dense rectenna-arrays using electrically small antennas and aims to the design of a high efficient for low power input (i.e., less than −20 dBm) and high sensitivity (i.e., less than 1 μW/cm<sup>2</sup>) RF energy harvester for IoT. Simulations shown that for power density of 0.1 μW/cm<sup>2</sup> the RF harvester of size λ×λ delivers dc power output of 20.8 μW, while is able to power continuously a backscatter sensor node with power consumption of 100 μW at 1.6 V for power density of 0.2577 μW/cm<sup>2</sup>.","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"11 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114120831","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":"IMWS-5G 2018 TOC","authors":"","doi":"10.1109/imws-5g.2018.8484345","DOIUrl":"https://doi.org/10.1109/imws-5g.2018.8484345","url":null,"abstract":"","PeriodicalId":408288,"journal":{"name":"2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132669318","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}