Pub Date : 2020-08-01DOI: 10.1109/IMS30576.2020.9224069
J. Cuper, B. Salski, T. Karpisz, A. Pacewicz, P. Kopyt
This paper presents nondestructive conductivity measurement in the 20–40 GHz range with a Fabry-Perot open resonator, which is already known for its applicability in the characterization of low-loss dielectric laminates. In the presented setup, no electromagnetic model is needed to determine unknown conductivity of the material. The only figures of merit are Q-factors of the empty resonator and the one loaded with the sample. It is shown that the plano-concave open resonator can be used in the measurement of conductivity ranging from 104 up to a few 107 S/m.
{"title":"Conductivity measurement in mm-wave band with a Fabry-Perot open resonator","authors":"J. Cuper, B. Salski, T. Karpisz, A. Pacewicz, P. Kopyt","doi":"10.1109/IMS30576.2020.9224069","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224069","url":null,"abstract":"This paper presents nondestructive conductivity measurement in the 20–40 GHz range with a Fabry-Perot open resonator, which is already known for its applicability in the characterization of low-loss dielectric laminates. In the presented setup, no electromagnetic model is needed to determine unknown conductivity of the material. The only figures of merit are Q-factors of the empty resonator and the one loaded with the sample. It is shown that the plano-concave open resonator can be used in the measurement of conductivity ranging from 104 up to a few 107 S/m.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"8 1","pages":"996-998"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87407970","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223783
F. Heinz, F. Thome, A. Leuther, O. Ambacher
This paper reports the small-signal and noise modeling of InGaAs metamorphic high-electron-mobility transistors at room temperature. Three technologies with gate length of 100 nm, 50 nm, and 35 nm are investigated and the mechanisms causing noise in the different devices are modeled. Technologies that have been scaled and processed in one foundry are modeled with the same model topology which allows for maximal comparability. In this way, a consistent comparison of the effects causing noise in sub-100 nm HEMTs is possible. It is shown that an increase of the channel noise in combination with increased gate leakage currents causes the noise figure to not improve as expected when scaling to ultra short gate length.
{"title":"Noise Performance of Sub-100-nm Metamorphic HEMT Technologies","authors":"F. Heinz, F. Thome, A. Leuther, O. Ambacher","doi":"10.1109/IMS30576.2020.9223783","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223783","url":null,"abstract":"This paper reports the small-signal and noise modeling of InGaAs metamorphic high-electron-mobility transistors at room temperature. Three technologies with gate length of 100 nm, 50 nm, and 35 nm are investigated and the mechanisms causing noise in the different devices are modeled. Technologies that have been scaled and processed in one foundry are modeled with the same model topology which allows for maximal comparability. In this way, a consistent comparison of the effects causing noise in sub-100 nm HEMTs is possible. It is shown that an increase of the channel noise in combination with increased gate leakage currents causes the noise figure to not improve as expected when scaling to ultra short gate length.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"101 1","pages":"293-296"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79364053","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9224112
A. Tzadok, A. Valdes-Garcia, P. Pepeljugoski, J. Plouchart, M. Yeck, Huijuan Liu
A vertically integrated antennas-to-AI system is presented. 60-GHz 16-element phased array transmitter and receiver modules, previously developed for Gb/s NLOS communications, are used to implement a 3D radar system that extracts volumetric information from a scene at a high frame rate. The system employs an FMCW signal with 1-GHz bandwidth and can process 1250 radar readouts per second. An efficient timing control scheme between the radar electronics and the phased array module control enables obtaining each of the radar readouts from a separate beam direction. The system can scan a frame of 5×5 directions 50 times per second. All the radar system components including signal generation and ADC are assembled in a single portable chassis. A camera is also included in the system to enable the simultaneous capture of radar and video streams. A DNN was developed to extract temporal and volumetric features from the 3D radar information stream and enable the automatic recognition of fast evolving events. As an application example, the DNN was trained to perform automatic hand gesture recognition. The overall radar system and the associated DNN achieved a recognition accuracy of 93% on a set of 9 different gestures involving two hands.
{"title":"AI-driven Event Recognition with a Real-Time 3D 60-GHz Radar System","authors":"A. Tzadok, A. Valdes-Garcia, P. Pepeljugoski, J. Plouchart, M. Yeck, Huijuan Liu","doi":"10.1109/IMS30576.2020.9224112","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224112","url":null,"abstract":"A vertically integrated antennas-to-AI system is presented. 60-GHz 16-element phased array transmitter and receiver modules, previously developed for Gb/s NLOS communications, are used to implement a 3D radar system that extracts volumetric information from a scene at a high frame rate. The system employs an FMCW signal with 1-GHz bandwidth and can process 1250 radar readouts per second. An efficient timing control scheme between the radar electronics and the phased array module control enables obtaining each of the radar readouts from a separate beam direction. The system can scan a frame of 5×5 directions 50 times per second. All the radar system components including signal generation and ADC are assembled in a single portable chassis. A camera is also included in the system to enable the simultaneous capture of radar and video streams. A DNN was developed to extract temporal and volumetric features from the 3D radar information stream and enable the automatic recognition of fast evolving events. As an application example, the DNN was trained to perform automatic hand gesture recognition. The overall radar system and the associated DNN achieved a recognition accuracy of 93% on a set of 9 different gestures involving two hands.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"38 1","pages":"795-798"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76498624","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223867
Sheng Wang, Hong-Yeh Chang
A 3D rectenna with all-polarized and omnidirectional capacity is presented in this paper. The proposed rectenna is composed of six dual-linear polarized (DLP) rectennas, in a hexahedron. Each DLP cell is composed of a DLP antenna, a 90° hybrid, and a modified rectifier. The 90° hybrid and modified rectifier are employed to reallocate received powers between two ports of DLP antenna, and the topology can maintain high RF-to-DC power conversion efficiency when the polarization of incident wave is uncertain or varying. The proposed 3D rectenna can harvest RF power all round efficiently. With a measured power density of 355 μW/cm2, the output dc power maintains above 1.2 mW when the tile angle varies from 0° to 360° perpendicular to the surface of rectenna, and the maximum de power is 2.8 mW.
{"title":"A 3D Rectenna with All-polarization and Omnidirectional Capacity for IoT Applications","authors":"Sheng Wang, Hong-Yeh Chang","doi":"10.1109/IMS30576.2020.9223867","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223867","url":null,"abstract":"A 3D rectenna with all-polarized and omnidirectional capacity is presented in this paper. The proposed rectenna is composed of six dual-linear polarized (DLP) rectennas, in a hexahedron. Each DLP cell is composed of a DLP antenna, a 90° hybrid, and a modified rectifier. The 90° hybrid and modified rectifier are employed to reallocate received powers between two ports of DLP antenna, and the topology can maintain high RF-to-DC power conversion efficiency when the polarization of incident wave is uncertain or varying. The proposed 3D rectenna can harvest RF power all round efficiently. With a measured power density of 355 μW/cm2, the output dc power maintains above 1.2 mW when the tile angle varies from 0° to 360° perpendicular to the surface of rectenna, and the maximum de power is 2.8 mW.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"1 1","pages":"1188-1190"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88338141","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223939
Minning Zhu, Chung-Tse Michael Wu
A dispersion-engineered artificial transmission line (TL) enabled by negative group delay (NGD) is proposed to exhibit squint-free dominant mode leaky-wave radiation. The unit cell of the proposed artificial TL is based on a multi-section directional coupler, which is used to generate the desired NGD, followed by a composite right/left-handed transmission line (CRLH-TL) structure. An amplifier is incorporated within each unit cell to compensate for the power loss from the NGD coupler. By incorporating the NGD response, the resulting artificial TL can demonstrate a dispersionless fast wave characteristic within the NGD frequency band. For proof-of-concept, prototypes of a single unit cell and a three-unit cell NGD artificial TL are fabricated and tested to verify the dispersion and radiation characteristics. The measured radiation patterns of the proposed NGD artificial TL indicate that the main beam angle is located at -35 degrees in the backward direction, with a squint-free bandwidth from 2.55 GHz to 2.75 GHz.
{"title":"Negative Group Delay Enabled Artificial Transmission Line Exhibiting Squint-Free, Dominant Mode, Backward Leaky-Wave Radiation","authors":"Minning Zhu, Chung-Tse Michael Wu","doi":"10.1109/IMS30576.2020.9223939","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223939","url":null,"abstract":"A dispersion-engineered artificial transmission line (TL) enabled by negative group delay (NGD) is proposed to exhibit squint-free dominant mode leaky-wave radiation. The unit cell of the proposed artificial TL is based on a multi-section directional coupler, which is used to generate the desired NGD, followed by a composite right/left-handed transmission line (CRLH-TL) structure. An amplifier is incorporated within each unit cell to compensate for the power loss from the NGD coupler. By incorporating the NGD response, the resulting artificial TL can demonstrate a dispersionless fast wave characteristic within the NGD frequency band. For proof-of-concept, prototypes of a single unit cell and a three-unit cell NGD artificial TL are fabricated and tested to verify the dispersion and radiation characteristics. The measured radiation patterns of the proposed NGD artificial TL indicate that the main beam angle is located at -35 degrees in the backward direction, with a squint-free bandwidth from 2.55 GHz to 2.75 GHz.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"79 1 1","pages":"309-312"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88499793","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223790
Muhibur Rahman, K. Wu
This paper presents a fine picosecond (ps) pulse generator based on novel step recovery diodes (SRD) topology and hybrid NLTL structure. In order to compress and sharpen the pulse, NLTL along with SRD topology is proposed and studied for pulse generation. This topology also reduces the ringing level of the pulse which is provided as well. Controlling the pulse width of the proposed generator using a single resistor is the key advantage of the proposed ps generator. Various factors affecting waveform and causing distortion are also examined. The proposed pulse generator is validated through simulation and experiment. The proposed pulse generator produces 80ps pulse having FWHM=26ps, which would be one of the best candidates for ultrafast electronic techniques that require a fine sub-nanosecond pulse generation.
{"title":"A Fine Picosecond Pulse Generator Based on Novel SRD Topology and Tapered NLTL","authors":"Muhibur Rahman, K. Wu","doi":"10.1109/IMS30576.2020.9223790","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223790","url":null,"abstract":"This paper presents a fine picosecond (ps) pulse generator based on novel step recovery diodes (SRD) topology and hybrid NLTL structure. In order to compress and sharpen the pulse, NLTL along with SRD topology is proposed and studied for pulse generation. This topology also reduces the ringing level of the pulse which is provided as well. Controlling the pulse width of the proposed generator using a single resistor is the key advantage of the proposed ps generator. Various factors affecting waveform and causing distortion are also examined. The proposed pulse generator is validated through simulation and experiment. The proposed pulse generator produces 80ps pulse having FWHM=26ps, which would be one of the best candidates for ultrafast electronic techniques that require a fine sub-nanosecond pulse generation.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"144 1","pages":"301-304"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88755500","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223937
J. Kimionis, M. Holyoak, Amit Singh, S. Shahramian, Y. Baeyens
This paper presents a proof-of-concept system for low-complexity mmWave beam sensing at W-band that can be used for RF direction-of-arrival (DoA) estimation. Instead of relying on complicated RSSI - or phase-detecting receivers, the system exploits 3D geometric structures with single-diode power detector arrays (detect-arrays) to estimate a mmWave beam's DoA. Such low-complexity detectors can be highly advantageous for mobile units in enterprise IoT settings, where mmWave access points are already deployed for high-datarate communication. The latter can cooperatively provide signal bursts to achieve location awareness for drones or robots in GPS-denied indoor environments, without the need for highly-complex receivers with downconverter chains. The technique could be beneficial in establishing positioning reference points or assisting inertial measurement units (IMUs) to reset their accumulative error.
{"title":"A 3D Detect-array for Low-complexity W-band Beam Sensing and Direction-of-Arrival Estimation","authors":"J. Kimionis, M. Holyoak, Amit Singh, S. Shahramian, Y. Baeyens","doi":"10.1109/IMS30576.2020.9223937","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223937","url":null,"abstract":"This paper presents a proof-of-concept system for low-complexity mmWave beam sensing at W-band that can be used for RF direction-of-arrival (DoA) estimation. Instead of relying on complicated RSSI - or phase-detecting receivers, the system exploits 3D geometric structures with single-diode power detector arrays (detect-arrays) to estimate a mmWave beam's DoA. Such low-complexity detectors can be highly advantageous for mobile units in enterprise IoT settings, where mmWave access points are already deployed for high-datarate communication. The latter can cooperatively provide signal bursts to achieve location awareness for drones or robots in GPS-denied indoor environments, without the need for highly-complex receivers with downconverter chains. The technique could be beneficial in establishing positioning reference points or assisting inertial measurement units (IMUs) to reset their accumulative error.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"155 1","pages":"559-561"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77526772","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9224000
Kaijuan Zhang, C. Shi, Guangsheng Chen, Jinghong Chen, Runxi Zhang
This paper presents a differential 64.5-88 GHz wideband low-noise amplifier (LNA) in a 55-nm CMOS technology. The LNA is consisted of two common-source (CS) stages and one cascode stage. To achieve a wide bandwidth (BW), an interstage coupling network scheme utilizing step-up transformers and co-optimizing the interstage transimpedance responses is developed. A new transformer-based dual-coupling (TBDC) $gm$-boosted topology is proposed to simultaneously achieve high gain and low noise. In addition, capacitive neutralization and common-gate-shorting (CGS) techniques are utilized to improve gain and stability. The LNA achieves a peak gain of 15 dB, a wideband gain of >10 dB over 64.5-88 GHz, a $S_{11}$ of <-10 dB over 60–90 GHz, and a minimum noise figure of 5 dB, while consuming 72.7 mW power. The input PldB is -12.2 dBm at 70 GHz and -12.8 dBm at 80 GHz, respectively.
{"title":"A 64.5-88 GHz Coupling-Concerned CMOS LNA with >10 dB Gain and 5 dB Minimum NF","authors":"Kaijuan Zhang, C. Shi, Guangsheng Chen, Jinghong Chen, Runxi Zhang","doi":"10.1109/IMS30576.2020.9224000","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224000","url":null,"abstract":"This paper presents a differential 64.5-88 GHz wideband low-noise amplifier (LNA) in a 55-nm CMOS technology. The LNA is consisted of two common-source (CS) stages and one cascode stage. To achieve a wide bandwidth (BW), an interstage coupling network scheme utilizing step-up transformers and co-optimizing the interstage transimpedance responses is developed. A new transformer-based dual-coupling (TBDC) $gm$-boosted topology is proposed to simultaneously achieve high gain and low noise. In addition, capacitive neutralization and common-gate-shorting (CGS) techniques are utilized to improve gain and stability. The LNA achieves a peak gain of 15 dB, a wideband gain of >10 dB over 64.5-88 GHz, a $S_{11}$ of <-10 dB over 60–90 GHz, and a minimum noise figure of 5 dB, while consuming 72.7 mW power. The input PldB is -12.2 dBm at 70 GHz and -12.8 dBm at 80 GHz, respectively.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"8 1","pages":"337-340"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82767757","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223967
Rosanah Murugesu, M. Holyoak, H. Chow, S. Shahramian
This paper proposes a digital predistortion (DPD) technique for power amplifiers (PAs) in a large-scale multi-tile millimeter-wave (mm-wave) TX/RX phased-array system. By utilizing the nearfield coupling feedback between TX and RX elements for observation, the proposed DPD can linearize the main beam of a transmitted signal over the range of possible steering angles without the need for any additional dedicated far-field DPD observation circuitry or hardware. The proposed DPD is evaluated by linearizing a 256-TX and 128-RX element array driven by a 2.5-GBaud 16/64-QAM signal centered at 90 GHz. A single set of DPD coefficients achieve up to 8.8-dB improvement in Noise Power Ratio (NPR) as well as up to 5.6-dB improvement in Adjacent Channel Power Ratio (ACPR) across the 120° azimuth and 100° elevation steering range of the antenna array. Wireless links also demonstrate EVM improvements of up to 5.1 dB at 10 Gb/s.
{"title":"Linearization of mm-Wave Large-Scale Phased Arrays Using Near-Field Coupling Feedback for >10Gb/s Wireless Communication","authors":"Rosanah Murugesu, M. Holyoak, H. Chow, S. Shahramian","doi":"10.1109/IMS30576.2020.9223967","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223967","url":null,"abstract":"This paper proposes a digital predistortion (DPD) technique for power amplifiers (PAs) in a large-scale multi-tile millimeter-wave (mm-wave) TX/RX phased-array system. By utilizing the nearfield coupling feedback between TX and RX elements for observation, the proposed DPD can linearize the main beam of a transmitted signal over the range of possible steering angles without the need for any additional dedicated far-field DPD observation circuitry or hardware. The proposed DPD is evaluated by linearizing a 256-TX and 128-RX element array driven by a 2.5-GBaud 16/64-QAM signal centered at 90 GHz. A single set of DPD coefficients achieve up to 8.8-dB improvement in Noise Power Ratio (NPR) as well as up to 5.6-dB improvement in Adjacent Channel Power Ratio (ACPR) across the 120° azimuth and 100° elevation steering range of the antenna array. Wireless links also demonstrate EVM improvements of up to 5.1 dB at 10 Gb/s.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"1 1","pages":"1271-1274"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86471602","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 : 2020-08-01DOI: 10.1109/IMS30576.2020.9223873
H. Yin, Zhengbo Jiang, Xiaowei Zhu, Chao Yu
In this paper, a novel heterogenous neural network for over-the-air (OTA) behavioral modeling of millimeter-wave (mmW) beamforming transmitters with concurrent dynamic configurations is proposed. Different from conventional behavioral modeling methodology, the signal for model construction is obtained from the OTA measurement. By integrating concurrent dynamic configurations with transmitter input/output, the behaviors of enormous transmitter states can be accurately characterized by only one model, which is validated by experiments on a dual-channel mmW beamforming transmitter with 125 state combinations of concurrent dynamic configurations of input power, operating frequency and beam direction. Cross validation results indicate that proposed model can achieve great performance on both training and validation sets, which is very promising to be employed in 5G and future intelligent communication systems.
{"title":"Over-the-air Behavioral Modeling of Millimeter Wave Beamforming Transmitters with Concurrent Dynamic Configurations Utilizing Heterogenous Neural Network","authors":"H. Yin, Zhengbo Jiang, Xiaowei Zhu, Chao Yu","doi":"10.1109/IMS30576.2020.9223873","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223873","url":null,"abstract":"In this paper, a novel heterogenous neural network for over-the-air (OTA) behavioral modeling of millimeter-wave (mmW) beamforming transmitters with concurrent dynamic configurations is proposed. Different from conventional behavioral modeling methodology, the signal for model construction is obtained from the OTA measurement. By integrating concurrent dynamic configurations with transmitter input/output, the behaviors of enormous transmitter states can be accurately characterized by only one model, which is validated by experiments on a dual-channel mmW beamforming transmitter with 125 state combinations of concurrent dynamic configurations of input power, operating frequency and beam direction. Cross validation results indicate that proposed model can achieve great performance on both training and validation sets, which is very promising to be employed in 5G and future intelligent communication systems.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"1 1","pages":"397-400"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89053169","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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