{"title":"Using Embedded Microcontrollers in Radar Test Equipment","authors":"Richard S. Binney, L. E. Riblett","doi":"10.1109/ARFTG.1990.323978","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323978","url":null,"abstract":"With the recent advancements in microcontroller technology, radar test equipment can be designed to improve the accuracy of measurements being made and simplify designs. An embedded integrator monitor design application (hardware and software) is presented and comparisons are made between the embedded design and the more traditional discrete design approach.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122058386","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":"Model Fitting Using Both TDR and Frequency Responses","authors":"R. Lane","doi":"10.1109/ARFTG.1990.323972","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323972","url":null,"abstract":"Fitting a circuit model to measured data is usually accomplished by matching the model's calculated 'S' parameters to the target's 'S' parameters as measured on a VANA over the model's operating frequency range. For electrically \" long\" structures, several wavelengths long at the upper modelling frequency and poor starting values, the conventional technique leads to convergence difficulties. Using the IFT to effectively obtain the time domain step reflection response and matching this to the target's similarly transformed response, leads to better starting values and surer convergence. Examples are given, run on a low cost, commercially available circuit analysis program, of optimization using frequency domain only and time/frequency domain switching, for several simple networks. Some of the resolution limitations inherent in the method and choice of mode switching points are discussed.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117216464","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":"Vector Pulse Profiling Using Carrier Spectral Line with 20 Nanosecond Resolution","authors":"M. Grace, P. Kapetanic","doi":"10.1109/ARFTG.1990.323982","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323982","url":null,"abstract":"Pulse Microwave Systems are used extensively in radar and electronic warfare equipment. The ability to characterize these systems under pulse microwave operating conditions has only recently been developed. In addition, pulse techniques are used to characterize the varied components used in these systems such as transmit-receive switches, pulsed amplifiers, and pulsed MMIC transceivers. Pulsc measurements are also used to prevent thermal destruction of semi-conductor devices that do not have the proper heat sinking for on-wafer testing.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"61 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121005681","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":"Measuring the Surface Reflection and Attenuation of Absorbing Materials in Free Space","authors":"H. Stinehelfer","doi":"10.1109/ARFTG.1990.323984","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323984","url":null,"abstract":"","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127952794","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":"An Algorithm for Using a Slide-Screw Tuner as a Computer-Controlled Impedance","authors":"G. Sloan","doi":"10.1109/ARFTG.1990.323976","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323976","url":null,"abstract":"In the testing of active microwave components, a common test procedure is to evaluate a device's performance when subjected to an all-phase, constant-standing-wave-ratio (APCS) load pull. Such a test specification is useful in verifying a device's stability and mismatch performance. Typically, APCS pulls are tediously performed by hand, with manually operated tuners. However, with the advent of mechanical, computer-controlled tuners, it is now possible to automate this procedure.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114508819","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}
J. Mahon, P. Ersland, C. Weichert, Mike Lally, J. Lanteri, D. Kaputa
{"title":"On Wafer Pulse Power Vector Testing","authors":"J. Mahon, P. Ersland, C. Weichert, Mike Lally, J. Lanteri, D. Kaputa","doi":"10.1109/ARFTG.1990.323983","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323983","url":null,"abstract":"","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128146655","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":"Limitations and Accuracy of CAD Simulators for Discontinuity Models on GaAs Substrates","authors":"John D. Goshinska, M. Dydyk, Ron Kielmeyer","doi":"10.1109/ARFTG.1990.323973","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323973","url":null,"abstract":"This paper presents the results of a study to establish the limitations and accuracy of commercially available CAD simulators for microstrip discontinuities, commonly referred to as the corner, step, tee and cross [l]. Measured S-parameters of these discontinuities fabricated on a 100 micron GaAs substrate are compared against results from TOUCHSTONE, SUPER COMPACT, EMsim and SONNET simulators. Results presented indicate that none of the currently available CAD simulators, used in this study, are capable of predicting microstrip discontinuities performance with sufficient accuracy to permit first time design success in MMIC technology.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125389532","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":"Self Calibration System for a Microwave Spectrum Analyzer","authors":"C. Bryant","doi":"10.1109/ARFTG.1990.323974","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323974","url":null,"abstract":"","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115928886","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 Stability Tester for MTI Radar Transmitters","authors":"F. Jones, David Mackes, James M. Van Damme","doi":"10.1109/ARFTG.1990.323980","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323980","url":null,"abstract":"Modern radars rely heavily on multiple coherent pulses for reduction of clutter. This has become more important in the case of military radar. Discusses stability testingf for MTI radar transmission.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114278468","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":"S-Parameter and Equivaleat-Circuit-Parameter Statistics","authors":"R. Anholt, R. Worley, R. Neidhard","doi":"10.1109/ARFTG.1990.323979","DOIUrl":"https://doi.org/10.1109/ARFTG.1990.323979","url":null,"abstract":"We compare the ability of three different equivalent-circuit extraction methods to give ensembles of model parameters that accurately predict not only average S-parameters but the S-parameter statistics the standard deviations and intercorrelations between the real and imaginary parts. Measurements were made for 400 GaAs MESFET's fabricated on a single wafer with an MBE-grown active layer. Data is compared for different biases. We find that bimodal distributions give unphysical correlations that the equivalent-circuit models fail to model. The possibility of using uncorrelated equivalent-circuit values is also discussed.","PeriodicalId":256746,"journal":{"name":"35th ARFTG Conference Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117340078","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}