Pub Date : 2019-06-02DOI: 10.1109/mwsym.2019.8700921
A. Tang, Yanghyo Kim, Yan Zhang, R. Huang, M. Chang
This paper presents a fully integrated single-chip radar transceiver (including waveform generation) in 65nm CMOS technology. The single chip radar employs synchronously switched digitally controlled artificial dielectric (DiCAD) in order to extend the FMCW chirp bandwidth leading to higher axial radar resolutions. Measurements with a prototype device demonstrate a factor of 2 increase in chirp bandwidth although increase by larger factors is possible. The entire radar chip occupies 2.5 x 1.7 mm of silicon area and consumes 320 mW of DC power.
{"title":"A W-Band FMCW Radar System-on-Chip Employing Synchronized Switching Digitally Controlled Artificial Dielectric for Chirp","authors":"A. Tang, Yanghyo Kim, Yan Zhang, R. Huang, M. Chang","doi":"10.1109/mwsym.2019.8700921","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700921","url":null,"abstract":"This paper presents a fully integrated single-chip radar transceiver (including waveform generation) in 65nm CMOS technology. The single chip radar employs synchronously switched digitally controlled artificial dielectric (DiCAD) in order to extend the FMCW chirp bandwidth leading to higher axial radar resolutions. Measurements with a prototype device demonstrate a factor of 2 increase in chirp bandwidth although increase by larger factors is possible. The entire radar chip occupies 2.5 x 1.7 mm of silicon area and consumes 320 mW of DC power.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"24 1","pages":"677-679"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81229454","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700875
M. Haider, J. Russer, Jesus Abundis Patino, C. Jirauschek, P. Russer
Josephson traveling wave parametric amplifiers have enabled ultra-sensitive detection of microwave photons in radio astronomy and real-time readout of superconducting quantum bits. To achieve a large gain, the interaction time with the non-linearity of the amplifier needs to be maximized. Traveling wave parametric amplifiers exhibit long interaction times by providing long propagation paths, enabling a greater gain and higher bandwidths than other microwave parametric amplifiers. In the case of the degenerate Josephson parametric amplifier (DJPA) below threshold of parametric oscillation, a squeezed vacuum state can be generated, and above threshold a second bifurcation point exists, where the device generates amplitude squeezed radiation.
{"title":"A Josephson Traveling Wave Parametric Amplifier for Quantum Coherent Signal Processing","authors":"M. Haider, J. Russer, Jesus Abundis Patino, C. Jirauschek, P. Russer","doi":"10.1109/mwsym.2019.8700875","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700875","url":null,"abstract":"Josephson traveling wave parametric amplifiers have enabled ultra-sensitive detection of microwave photons in radio astronomy and real-time readout of superconducting quantum bits. To achieve a large gain, the interaction time with the non-linearity of the amplifier needs to be maximized. Traveling wave parametric amplifiers exhibit long interaction times by providing long propagation paths, enabling a greater gain and higher bandwidths than other microwave parametric amplifiers. In the case of the degenerate Josephson parametric amplifier (DJPA) below threshold of parametric oscillation, a squeezed vacuum state can be generated, and above threshold a second bifurcation point exists, where the device generates amplitude squeezed radiation.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"12 1","pages":"956-958"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87506585","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700865
Hang-Ji Liu, Xi Zhu, Muting Lu, K. Yeo
A voltage-controlled programmable-gain amplifier (VC-PGA) is designed in this work. The power consumption of the VC-PGA is binary-weighted. In contrast to conventional PGAs, the gain step of the designed PGA can be continuously tuned by a control voltage. To prove the concept, an analog baseband chain is implemented in 65 nm CMOS technology, which consists of a switchable-order filter with the VC-PGA. The measurements show that the frequency responses can be configured as either 5th or 7th order with 16 gain steps. The bandwidth is approximately 50 MHz for all cases and the gain step can be continuously tuned between 0 and 3 dB. The core area is only 0.18 μm2.
{"title":"Design of a Voltage-Controlled Programmable-Gain Amplifier in 65-nm CMOS Technology","authors":"Hang-Ji Liu, Xi Zhu, Muting Lu, K. Yeo","doi":"10.1109/mwsym.2019.8700865","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700865","url":null,"abstract":"A voltage-controlled programmable-gain amplifier (VC-PGA) is designed in this work. The power consumption of the VC-PGA is binary-weighted. In contrast to conventional PGAs, the gain step of the designed PGA can be continuously tuned by a control voltage. To prove the concept, an analog baseband chain is implemented in 65 nm CMOS technology, which consists of a switchable-order filter with the VC-PGA. The measurements show that the frequency responses can be configured as either 5th or 7th order with 16 gain steps. The bandwidth is approximately 50 MHz for all cases and the gain step can be continuously tuned between 0 and 3 dB. The core area is only 0.18 μm2.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"98 1","pages":"87-90"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87579147","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700800
Abhishek Kumar, S. Aniruddhan
A reciprocal network to mitigate cross-talk induced interference (CI) in a 2×2 Multiple Input Multiple Output (MIMO) wireless node operating in same-channel full-duplex (SCFD) mode is proposed. Reciprocal nature of channel between the two antennas of the MIMO node is exploited to simplify the design of cancellation network. A canceller board is designed and fabricated on an FR4 PCB to test the proposed technique. Measurements on the board connected to a dual-port antenna mounted in lab environment show CI cancellation of more than 55dB in 20MHz bandwidth around 2.35 GHz. Self interference (SI) is also cancelled to more than 35dB in the 20 MHz bandwidth. Measured results with modulated 20MHz +30 dBm signal applied at transmit ports are also shown.
{"title":"A 2.35 GHz Cross-Talk Canceller for 2×2 MIMO Full-Duplex Wireless System","authors":"Abhishek Kumar, S. Aniruddhan","doi":"10.1109/mwsym.2019.8700800","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700800","url":null,"abstract":"A reciprocal network to mitigate cross-talk induced interference (CI) in a 2×2 Multiple Input Multiple Output (MIMO) wireless node operating in same-channel full-duplex (SCFD) mode is proposed. Reciprocal nature of channel between the two antennas of the MIMO node is exploited to simplify the design of cancellation network. A canceller board is designed and fabricated on an FR4 PCB to test the proposed technique. Measurements on the board connected to a dual-port antenna mounted in lab environment show CI cancellation of more than 55dB in 20MHz bandwidth around 2.35 GHz. Self interference (SI) is also cancelled to more than 35dB in the 20 MHz bandwidth. Measured results with modulated 20MHz +30 dBm signal applied at transmit ports are also shown.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"67 1","pages":"877-880"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87838011","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8701040
T. Sharma, S. Dhar, R. Darraji, D. Holmes, V. Mallette, Jeffrey K. Jones, F. Ghannouchi
This paper introduces the Class O2 power amplifier (PA) with high power-density and drain efficiency. A new waveform engineering-based design approach is proposed to realize a reliable high-efficiency PA operation while tuning both second and third harmonic impedances to open-circuit termination. The proposed theory derives the intrinsic current and voltage waveforms as a function of input second-harmonic tuning which is adopted to enable the realization of reliable Class O2 PA operation. A multi-harmonic vector load-pull system is used for the practical validation that is carried out using a 10-W gallium nitride (GaN) transistor. On load-pull, the Class O2 mode demonstrates a drain efficiency of 87% at an output power of 39.8 dBm with a gain of 10 dB at a frequency of 1.0 GHz.
{"title":"Novel High Efficiency Power Amplifier Mode Using Open Circuit Harmonic Loading","authors":"T. Sharma, S. Dhar, R. Darraji, D. Holmes, V. Mallette, Jeffrey K. Jones, F. Ghannouchi","doi":"10.1109/mwsym.2019.8701040","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8701040","url":null,"abstract":"This paper introduces the Class O2 power amplifier (PA) with high power-density and drain efficiency. A new waveform engineering-based design approach is proposed to realize a reliable high-efficiency PA operation while tuning both second and third harmonic impedances to open-circuit termination. The proposed theory derives the intrinsic current and voltage waveforms as a function of input second-harmonic tuning which is adopted to enable the realization of reliable Class O2 PA operation. A multi-harmonic vector load-pull system is used for the practical validation that is carried out using a 10-W gallium nitride (GaN) transistor. On load-pull, the Class O2 mode demonstrates a drain efficiency of 87% at an output power of 39.8 dBm with a gain of 10 dB at a frequency of 1.0 GHz.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"11 3 1","pages":"79-82"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84081508","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700950
A. Hirata, M. Nakashizuka, K. Suizu, Yoshikazu Sudo
This paper presents non-destructive millimeter-wave (MMW) imaging of sub-millimeter wide cracks on concrete surface that are covered by paper. Measurement of near-field scattering of 76.5-GHz-MMW signal at cracks enables the detection of sub-millimeter wide cracks. The decrease of received power due to near-field scattering is small, therefore the MMW image contrast of fine surface concrete cracks is not clear. We found that standing wave occurs between the sample surface and the antenna, and received power increases by the near-field scattering caused by the surface crack in case the antenna locates around the node of the standing wave. The MMW image contrast of the cracks improved by up to 3 dB by calculating the difference of two MMW images that are obtained with different paper thickness or different antenna height.
{"title":"Improvement of Detection in Concrete Surface Cracks Covered with Paper by Using Standing Wave of 77-GHz-Band Millimeter-Wave","authors":"A. Hirata, M. Nakashizuka, K. Suizu, Yoshikazu Sudo","doi":"10.1109/mwsym.2019.8700950","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700950","url":null,"abstract":"This paper presents non-destructive millimeter-wave (MMW) imaging of sub-millimeter wide cracks on concrete surface that are covered by paper. Measurement of near-field scattering of 76.5-GHz-MMW signal at cracks enables the detection of sub-millimeter wide cracks. The decrease of received power due to near-field scattering is small, therefore the MMW image contrast of fine surface concrete cracks is not clear. We found that standing wave occurs between the sample surface and the antenna, and received power increases by the near-field scattering caused by the surface crack in case the antenna locates around the node of the standing wave. The MMW image contrast of the cracks improved by up to 3 dB by calculating the difference of two MMW images that are obtained with different paper thickness or different antenna height.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"129 1","pages":"297-300"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88343990","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700732
Xiaohu Wu, M. Nafe, Alejandro Álvarez Melcón, J. Sebastián Gómez-Díaz, X. Liu
A magnetless non-reciprocal filter based on spatio-temporal modulation is demonstrated in this paper. By modulating the resonant frequencies of the resonators with a progressive phase shift, a large difference between the forward and backward transmissions can be achieved, realizing a filter with non-reciprocal amplitude responses. As a proof-of-concept, a 2-pole microstrip filter centered at 1.0 GHz is designed and characterized. The non-reciprocal transmission is 11 dB in simulation and 6 dB in measurement, which experimentally validates the proposed concept.
{"title":"A Non-Reciprocal Microstrip Bandpass Filter Based on Spatio-Temporal Modulation","authors":"Xiaohu Wu, M. Nafe, Alejandro Álvarez Melcón, J. Sebastián Gómez-Díaz, X. Liu","doi":"10.1109/mwsym.2019.8700732","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700732","url":null,"abstract":"A magnetless non-reciprocal filter based on spatio-temporal modulation is demonstrated in this paper. By modulating the resonant frequencies of the resonators with a progressive phase shift, a large difference between the forward and backward transmissions can be achieved, realizing a filter with non-reciprocal amplitude responses. As a proof-of-concept, a 2-pole microstrip filter centered at 1.0 GHz is designed and characterized. The non-reciprocal transmission is 11 dB in simulation and 6 dB in measurement, which experimentally validates the proposed concept.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"7 1","pages":"9-12"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87176025","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700983
M. Gardill, Johannes Schwendner, Jonas Fuchs
A commercial chirp-sequence automotive radar sensor is reconfigured to allow for time-frequency analysis of the 77GHz automotive radar bands. Due to its low cost and compact size the proposed approach allows for in-situ interception and time-frequency analysis of radar signals in arbitrary traffic scenarios, e.g. by mounting the sensor in a test vehicle exactly at the positions where the radar sensors would be mounted. The theory behind the modification is discussed and compared with measurements. Time-frequency spectra of a rural road driving scenario obtained with the proposed system are shown to illustrate the practical relevance and usefulness of the approach.
{"title":"In-Situ Time-Frequency Analysis of the 77 GHz Bands using a Commercial Chirp-Sequence Automotive FMCW Radar Sensor","authors":"M. Gardill, Johannes Schwendner, Jonas Fuchs","doi":"10.1109/mwsym.2019.8700983","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700983","url":null,"abstract":"A commercial chirp-sequence automotive radar sensor is reconfigured to allow for time-frequency analysis of the 77GHz automotive radar bands. Due to its low cost and compact size the proposed approach allows for in-situ interception and time-frequency analysis of radar signals in arbitrary traffic scenarios, e.g. by mounting the sensor in a test vehicle exactly at the positions where the radar sensors would be mounted. The theory behind the modification is discussed and compared with measurements. Time-frequency spectra of a rural road driving scenario obtained with the proposed system are shown to illustrate the practical relevance and usefulness of the approach.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"4 1","pages":"544-547"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83563784","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700886
J. Russer, M. Haider, C. Jirauschek, P. Russer
The prospects of quantum simulation and design of complex electromagnetic structures is discussed. Quantum superposition and entanglement has the potential of high parallelism and efficiency in CAD. The transmission line matrix (TLM) scheme for EM field simulation provides a basis for a quantum algorithm for EM field modeling. The implementation and problems to be solved are discussed.
{"title":"On the Possibility of Quantum Simulation of Electromagnetic Structures","authors":"J. Russer, M. Haider, C. Jirauschek, P. Russer","doi":"10.1109/mwsym.2019.8700886","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700886","url":null,"abstract":"The prospects of quantum simulation and design of complex electromagnetic structures is discussed. Quantum superposition and entanglement has the potential of high parallelism and efficiency in CAD. The transmission line matrix (TLM) scheme for EM field simulation provides a basis for a quantum algorithm for EM field modeling. The implementation and problems to be solved are discussed.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"41 1","pages":"267-270"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83648463","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 : 2019-06-02DOI: 10.1109/mwsym.2019.8700725
J. P. Santos, F. Fereidoony, M. Hedayati, Y. Wang
The RF bandwidth of systems that are constrained into electrically small volumes are often limited to the resonance bandwidth dictated by the radiation quality-factor of the antenna according to Chu’s limit. Still, many systems, both legacy and emerging, such as in unmanned aerial vehicles (UAV) for applications in the Internet of Things (IoT), require the ability to communicate amongst various systems that may not contain the available electrical volume to support conventional transmission of desired signals. We propose a novel electrically small antenna enabled through Direct Antenna Modulation (DAM). The design of the system utilizes a capacitively loaded loop antenna (CLLA) integrated with symmetrical high-power and high figure-of-merit (FOM) GaN transistors that optimally modulate an input BFSK signal to allow for high-bandwidth radiation, despite the radiation Q-factor of the antenna. The system was prototyped and measured, achieving a 47 efficiency-bandwidth product improvement over a conventional CLLA, surpassing aforementioned limits.
{"title":"High Efficiency Bandwidth Electrically Small Antennas for Compact Wireless Communication Systems","authors":"J. P. Santos, F. Fereidoony, M. Hedayati, Y. Wang","doi":"10.1109/mwsym.2019.8700725","DOIUrl":"https://doi.org/10.1109/mwsym.2019.8700725","url":null,"abstract":"The RF bandwidth of systems that are constrained into electrically small volumes are often limited to the resonance bandwidth dictated by the radiation quality-factor of the antenna according to Chu’s limit. Still, many systems, both legacy and emerging, such as in unmanned aerial vehicles (UAV) for applications in the Internet of Things (IoT), require the ability to communicate amongst various systems that may not contain the available electrical volume to support conventional transmission of desired signals. We propose a novel electrically small antenna enabled through Direct Antenna Modulation (DAM). The design of the system utilizes a capacitively loaded loop antenna (CLLA) integrated with symmetrical high-power and high figure-of-merit (FOM) GaN transistors that optimally modulate an input BFSK signal to allow for high-bandwidth radiation, despite the radiation Q-factor of the antenna. The system was prototyped and measured, achieving a 47 efficiency-bandwidth product improvement over a conventional CLLA, surpassing aforementioned limits.","PeriodicalId":6720,"journal":{"name":"2019 IEEE MTT-S International Microwave Symposium (IMS)","volume":"91 2","pages":"83-86"},"PeriodicalIF":0.0,"publicationDate":"2019-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91423245","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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