Pub Date : 2018-09-01DOI: 10.23919/EUMC.2018.8541670
P. Burn, Pallav L Shah, C. Hancock
This paper presents a new flexible RF cut and microwave ablation device for dissection and assisted “tunneling” into the hard surface of a tumour, prior to ablation. The distal applicator structure consists of twin bipolar RF electrodes and a helical “leaky” coaxial microwave antenna. Several antenna embodiments are discussed with associated design challenges presented. Finite element analysis (FEA) simulation, the prototype device and initial ex-vivo evaluation are presented. It is shown that the FEA simulation data corresponded well to the ex-vivo ablation profile. The results successfully validate this concept and its capability of supporting both RF cut and microwave ablation using a single antenna structure.
{"title":"Flexible Microwave Ablation Device with Integrated RF Cut Modality","authors":"P. Burn, Pallav L Shah, C. Hancock","doi":"10.23919/EUMC.2018.8541670","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541670","url":null,"abstract":"This paper presents a new flexible RF cut and microwave ablation device for dissection and assisted “tunneling” into the hard surface of a tumour, prior to ablation. The distal applicator structure consists of twin bipolar RF electrodes and a helical “leaky” coaxial microwave antenna. Several antenna embodiments are discussed with associated design challenges presented. Finite element analysis (FEA) simulation, the prototype device and initial ex-vivo evaluation are presented. It is shown that the FEA simulation data corresponded well to the ex-vivo ablation profile. The results successfully validate this concept and its capability of supporting both RF cut and microwave ablation using a single antenna structure.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"7 1","pages":"336-339"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81430743","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541792
S. Afridi, I. Hunter, M. Sandhu
This paper presents the design of dielectric loaded waveguide filters with wide spurious free bandwidth. Resonators loaded with non-uniform width ceramic blocks are used to spread out the higher order spurious resonances along with the silver plated hole/ridged ceramic blocks in I/O resonators to reduce the overall size of the filter. The proposed designs demonstrate 2.44 times fo spurious free bandwidth. Simulated results for a six pole Chebyshev non-uniform width ceramic blocks mixed with a hole plated ceramic loaded filter and a non-uniform width ceramic blocks mixed with a silver plated ridged ceramic loaded filter are presented in the paper exhibiting excellent spurious performance.
{"title":"Spurious Free Non Uniform Width Dielectric Loaded Filters","authors":"S. Afridi, I. Hunter, M. Sandhu","doi":"10.23919/EUMC.2018.8541792","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541792","url":null,"abstract":"This paper presents the design of dielectric loaded waveguide filters with wide spurious free bandwidth. Resonators loaded with non-uniform width ceramic blocks are used to spread out the higher order spurious resonances along with the silver plated hole/ridged ceramic blocks in I/O resonators to reduce the overall size of the filter. The proposed designs demonstrate 2.44 times fo spurious free bandwidth. Simulated results for a six pole Chebyshev non-uniform width ceramic blocks mixed with a hole plated ceramic loaded filter and a non-uniform width ceramic blocks mixed with a silver plated ridged ceramic loaded filter are presented in the paper exhibiting excellent spurious performance.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"28 1","pages":"85-88"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82334563","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 : 2018-09-01DOI: 10.23919/EUMIC.2018.8539909
Oguz Kazan, F. Koçer, O. Civi
This paper presents a low-noise amplifier (LNA) operating between 8–11 GHz. Measurement results show that the LNA has a gain of more than 20 dB while achieving a noise figure of less than 2 dB. The three stage topology achieves high linearity, providing an OIP3 of 29 dBm at 0.6 W power dissipation. The robustness tests show that the circuit survives to at least 2.5 W (34 dBm) input power. With a size of just 2.8 × 1.3 mm2 (3.6 mm2) the presented LNA is compact when compared to the state of the art. The circuit is realized using the $0.25 mumathrm{m}$ Power GaN/SiC HEMT process by WIN Semiconductor.
本文提出了一种工作在8 - 11ghz之间的低噪声放大器。测量结果表明，LNA的增益大于20 dB，噪声系数小于2 dB。三级拓扑结构实现了高线性度，在0.6 W功耗下提供29 dBm的OIP3。稳健性测试表明，该电路可以承受至少2.5 W (34 dBm)的输入功率。与现有技术相比，LNA的尺寸仅为2.8 × 1.3 mm2 (3.6 mm2)。该电路采用WIN半导体公司的$0.25 mu mathm {m}$ Power GaN/SiC HEMT工艺实现。
{"title":"An X-Band Robust GaN Low-Noise Amplifier MMIC with Sub 2 dB Noise Figure","authors":"Oguz Kazan, F. Koçer, O. Civi","doi":"10.23919/EUMIC.2018.8539909","DOIUrl":"https://doi.org/10.23919/EUMIC.2018.8539909","url":null,"abstract":"This paper presents a low-noise amplifier (LNA) operating between 8–11 GHz. Measurement results show that the LNA has a gain of more than 20 dB while achieving a noise figure of less than 2 dB. The three stage topology achieves high linearity, providing an OIP3 of 29 dBm at 0.6 W power dissipation. The robustness tests show that the circuit survives to at least 2.5 W (34 dBm) input power. With a size of just 2.8 × 1.3 mm2 (3.6 mm2) the presented LNA is compact when compared to the state of the art. The circuit is realized using the $0.25 mumathrm{m}$ Power GaN/SiC HEMT process by WIN Semiconductor.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"20 1","pages":"1202-1204"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80873212","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 : 2018-09-01DOI: 10.23919/EURAD.2018.8546665
P. Harati, A. Dyskin, I. Kallfass
In this paper we demonstrate the feasibility of a novel carrier recovery approach for broadband wireless communication systems with direct conversion topology through measurements. In a direct conversion IQ mixer, a part of the local oscillator (LO) signal is leaked to the radio frequency (RF) port. Consequently the RF signal traveling over the air towards receiver contains a part of the LO signal. This work introduces a method to extract the LO content from the received signal in a modulation type and baud rate independent manner with a single hardware setup.
{"title":"Analog Carrier Recovery for Broadband Wireless Communication Links","authors":"P. Harati, A. Dyskin, I. Kallfass","doi":"10.23919/EURAD.2018.8546665","DOIUrl":"https://doi.org/10.23919/EURAD.2018.8546665","url":null,"abstract":"In this paper we demonstrate the feasibility of a novel carrier recovery approach for broadband wireless communication systems with direct conversion topology through measurements. In a direct conversion IQ mixer, a part of the local oscillator (LO) signal is leaked to the radio frequency (RF) port. Consequently the RF signal traveling over the air towards receiver contains a part of the LO signal. This work introduces a method to extract the LO content from the received signal in a modulation type and baud rate independent manner with a single hardware setup.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"1 1","pages":"1401-1404"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89614013","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541524
M. Jost, A. Heunisch, A. Prasetiadi, B. Schulz, R. Reese, M. Nickel, E. Polat, M. Quibeldey, H. Maune, T. Rabe, R. Follmann, R. Jakoby
This paper presents the design and characterisation of a new liquid crystal (LC) based single-pole double-throw (SPDT) with continuously adjustable power splitting ratio in low temperature co-fired ceramic (LTCC) technology. It is designed for a centre frequency of 30 GHz, including a key component, the fully embedded LC phase shifter in stripline topology. The SPDT shows a good matching with $vert S_{11}vert =-10mathrm{dB}$ over a bandwidth of 18 %. It exhibits an insertion loss of 9 dB to 11 dB and an isolation between 22 dB to 32 dB. The continuous tuneability not only allows the selection of each preferred power splitting ratio at the output ports, but also a tuning of the centre frequency. The high insertion loss arises from a certain surface roughness as well as a decreased conductivity of the gold metallisation used.
{"title":"Liquid Crystal Based SPDT with Adjustable Power Splitting Ratio in LTCC Technology","authors":"M. Jost, A. Heunisch, A. Prasetiadi, B. Schulz, R. Reese, M. Nickel, E. Polat, M. Quibeldey, H. Maune, T. Rabe, R. Follmann, R. Jakoby","doi":"10.23919/EUMC.2018.8541524","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541524","url":null,"abstract":"This paper presents the design and characterisation of a new liquid crystal (LC) based single-pole double-throw (SPDT) with continuously adjustable power splitting ratio in low temperature co-fired ceramic (LTCC) technology. It is designed for a centre frequency of 30 GHz, including a key component, the fully embedded LC phase shifter in stripline topology. The SPDT shows a good matching with $vert S_{11}vert =-10mathrm{dB}$ over a bandwidth of 18 %. It exhibits an insertion loss of 9 dB to 11 dB and an isolation between 22 dB to 32 dB. The continuous tuneability not only allows the selection of each preferred power splitting ratio at the output ports, but also a tuning of the centre frequency. The high insertion loss arises from a certain surface roughness as well as a decreased conductivity of the gold metallisation used.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"49 1","pages":"612-615"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89973627","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541500
A. Mingardi, W.-D. Zhang, E. Brown, L. García-Muñoz, G. C. del Barrio, D. Segovia-Vargas
We present here experimental results for a new type of broadband emitter that covers two RF bands, one around 300 GHz and the other between 10 and 20 GHz. The higher band is excited by a square-spiral antenna driven at its center by a photoconductive switch. The lower band is excited by a dumbbell dipole antenna that is connected serially to the square spiral and also acts as the bias line for the switch. This type of dual-band performance should be beneficial for multiple system applications including free-space radar without atmospheric dropout, and biomedical reflective imaging.
{"title":"THz and Microwave Dual-Band Ultrafast Photoconductive Antenna","authors":"A. Mingardi, W.-D. Zhang, E. Brown, L. García-Muñoz, G. C. del Barrio, D. Segovia-Vargas","doi":"10.23919/EUMC.2018.8541500","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541500","url":null,"abstract":"We present here experimental results for a new type of broadband emitter that covers two RF bands, one around 300 GHz and the other between 10 and 20 GHz. The higher band is excited by a square-spiral antenna driven at its center by a photoconductive switch. The lower band is excited by a dumbbell dipole antenna that is connected serially to the square spiral and also acts as the bias line for the switch. This type of dual-band performance should be beneficial for multiple system applications including free-space radar without atmospheric dropout, and biomedical reflective imaging.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"11 1","pages":"412-415"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86537385","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541544
Björn Staufenbiel, O. Lambert, Michael Krist
This paper aims to study practical applicable measurement and optimization methods of the noise figure of an undersampled radar receiver including the influence of aliasing caused by the analog-digital-conversion and the followed digital signal processing. For this, a measurement method is implemented that regards the convolution of noise components from adjacent frequency bands into the useful band which occurs through a weak band-limiting analog filter. A comparison with the common Y-Factor-Method noise figure measurement method for only the analog front-end is made and it is shown why this method is not suitable for undersampled systems. The results have shown that the weak slope steepness of the used analog bandpass filter leads to a degradation of the noise figure in the upper half of the receiving frequency band that could not be determined by common measurement methods.
{"title":"Noise Figure Verification and Optimization of an Undersampled Software Defined Radio Based Radar Receiver for a Phased Array Radar System","authors":"Björn Staufenbiel, O. Lambert, Michael Krist","doi":"10.23919/EUMC.2018.8541544","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541544","url":null,"abstract":"This paper aims to study practical applicable measurement and optimization methods of the noise figure of an undersampled radar receiver including the influence of aliasing caused by the analog-digital-conversion and the followed digital signal processing. For this, a measurement method is implemented that regards the convolution of noise components from adjacent frequency bands into the useful band which occurs through a weak band-limiting analog filter. A comparison with the common Y-Factor-Method noise figure measurement method for only the analog front-end is made and it is shown why this method is not suitable for undersampled systems. The results have shown that the weak slope steepness of the used analog bandpass filter leads to a degradation of the noise figure in the upper half of the receiving frequency band that could not be determined by common measurement methods.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"14 1","pages":"894-897"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87850142","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541619
Zhaorong Li, Gang Xu, Rong Zeng, Liming Lv, Wenjie Li, Xiaohua Li
the microwave breakdown threshold is one of the key factors when consider the power capacity of a cavity filter. In this paper, we analyzed theoretically how the air breaks down between the pin to plate electrodes firstly, and then two essential judgment conditions for breakdown were put forward. One is that the maximum electric field must reach to the breakdown threshold to produce plasma and another is that the average electric field is strong enough to support the charged particle evolve a short stream path between two electrodes. According to two judgment conditions, we made failure analysis of the continuous microwave air breakdown for cavity filter with redundant substance which varying with diameter, length, and rotation angle. It is found that the greater length and smaller diameter the reminder, the formation of breakdown occurs more easily. So, suggestion for quality test standard is concluded that the length of the redundant substance must be smaller than 0.63mm at a 20dBm continuous microwave input.
{"title":"Failure Analysis of Microwave Air Breakdown for the Cavity Filter with Remainder","authors":"Zhaorong Li, Gang Xu, Rong Zeng, Liming Lv, Wenjie Li, Xiaohua Li","doi":"10.23919/EUMC.2018.8541619","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541619","url":null,"abstract":"the microwave breakdown threshold is one of the key factors when consider the power capacity of a cavity filter. In this paper, we analyzed theoretically how the air breaks down between the pin to plate electrodes firstly, and then two essential judgment conditions for breakdown were put forward. One is that the maximum electric field must reach to the breakdown threshold to produce plasma and another is that the average electric field is strong enough to support the charged particle evolve a short stream path between two electrodes. According to two judgment conditions, we made failure analysis of the continuous microwave air breakdown for cavity filter with redundant substance which varying with diameter, length, and rotation angle. It is found that the greater length and smaller diameter the reminder, the formation of breakdown occurs more easily. So, suggestion for quality test standard is concluded that the length of the redundant substance must be smaller than 0.63mm at a 20dBm continuous microwave input.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"128 1","pages":"97-100"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87913436","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541585
S. Yao, Y. Cheng
A W-band planar array antenna with high efficiency and wide impedance bandwidth using MEMS micromachining technology is designed and fabricated in this paper. The MEMS fabrication process of selectively etching and gold plating is employed to fabricate the precise structure with the similar property of the hollow waveguide. To satisfy the requirement of maximum thickness, the reduced-height waveguide is applied to design an H-plane equal-amplitude and in-phase power divider with the perturbed and septum structure to enhance its impedance bandwidth. A $pmb{2}times pmb{2}$ -element sub-array is utilized to facilitate the layout of the feeding network in the lower layer. The wide-band-stepped horn is employed as the radiating element. Its simple configuration can guarantee good performance. Finally, an $mathbf{8}times mathbf{8}$ array antenna is fabricated by the MEMS micromachining technology and measured. The total thickness is 2.65 mm, which is less than one free space wavelength. Measurement results indicate that the impedance bandwidth for $vert mathbf{S}_{11}vert < -mathbf{10}$ is 21.28%. The minimal gain can be up to 23.36 dBi within the whole operating frequency band. Total antenna efficiency is up to 75% covering the range from 86.5 GHz to 104 GHz.
{"title":"W-Band High-Efficiency Wideband Planar Array Antenna Based on MEMS Micromachining Technology","authors":"S. Yao, Y. Cheng","doi":"10.23919/EUMC.2018.8541585","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541585","url":null,"abstract":"A W-band planar array antenna with high efficiency and wide impedance bandwidth using MEMS micromachining technology is designed and fabricated in this paper. The MEMS fabrication process of selectively etching and gold plating is employed to fabricate the precise structure with the similar property of the hollow waveguide. To satisfy the requirement of maximum thickness, the reduced-height waveguide is applied to design an H-plane equal-amplitude and in-phase power divider with the perturbed and septum structure to enhance its impedance bandwidth. A $pmb{2}times pmb{2}$ -element sub-array is utilized to facilitate the layout of the feeding network in the lower layer. The wide-band-stepped horn is employed as the radiating element. Its simple configuration can guarantee good performance. Finally, an $mathbf{8}times mathbf{8}$ array antenna is fabricated by the MEMS micromachining technology and measured. The total thickness is 2.65 mm, which is less than one free space wavelength. Measurement results indicate that the impedance bandwidth for $vert mathbf{S}_{11}vert < -mathbf{10}$ is 21.28%. The minimal gain can be up to 23.36 dBi within the whole operating frequency band. Total antenna efficiency is up to 75% covering the range from 86.5 GHz to 104 GHz.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"83 1","pages":"942-945"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88065321","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 : 2018-09-01DOI: 10.23919/EUMC.2018.8541748
Gordon Notzon, R. Storch, T. Musch, M. Vogt
Pseudo-random binary coded excitation signals are increasingly used for electromagnetic network analysis. Various types of sequences are available for this task. Flexible signal generators with high bandwidth are required for practical measurements. In this contribution, a concept for the generation of arbitrary binary coded signals with a chip frequency up to 5 Gchip/s based on a field programmable gate array (FPGA) is presented. Furthermore, an algorithm to fast and precisely shift the time lag between two coded signals to allow for correlating excitation and measurement signals in a hardware correlator has been developed. First, two different types of pseudo-random binary sequences, the maximum length sequence (MLS) and the almost perfect autocorrelation sequence (APAS), are compared with each other. Afterwards, the FPGA design with focus on the algorithm to realize a varying time lag between two generated signals is presented. Finally, the realization of a demonstrator system and measurement results for the validation of the system are presented.
{"title":"An FPGA-Based Measurement Generator for Cyclically Shifted Binary Signals","authors":"Gordon Notzon, R. Storch, T. Musch, M. Vogt","doi":"10.23919/EUMC.2018.8541748","DOIUrl":"https://doi.org/10.23919/EUMC.2018.8541748","url":null,"abstract":"Pseudo-random binary coded excitation signals are increasingly used for electromagnetic network analysis. Various types of sequences are available for this task. Flexible signal generators with high bandwidth are required for practical measurements. In this contribution, a concept for the generation of arbitrary binary coded signals with a chip frequency up to 5 Gchip/s based on a field programmable gate array (FPGA) is presented. Furthermore, an algorithm to fast and precisely shift the time lag between two coded signals to allow for correlating excitation and measurement signals in a hardware correlator has been developed. First, two different types of pseudo-random binary sequences, the maximum length sequence (MLS) and the almost perfect autocorrelation sequence (APAS), are compared with each other. Afterwards, the FPGA design with focus on the algorithm to realize a varying time lag between two generated signals is presented. Finally, the realization of a demonstrator system and measurement results for the validation of the system are presented.","PeriodicalId":6472,"journal":{"name":"2018 48th European Microwave Conference (EuMC)","volume":"9 1","pages":"922-925"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85922620","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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