{"title":"毫米波频率(54.2 GHz)阻抗测量","authors":"O. Petersen, C. Bradford, R. Cranmer","doi":"10.1109/ISSCC.1977.1155700","DOIUrl":null,"url":null,"abstract":"A WAVEGUIDE CIRCUIT (Figure 1) has been designed and constructed to measure impedance a t millimeter wave frequencies. To calculate the load impedance, known standards were used to characterize the network transformation between the p l y e of measurement and the load location. Measurements were performed at 54.2 GHz on specially fabricated loads and on mm-wave PIN diodes. A series of independent measurements were made to determine the relative phase and magnitude of the complex reflection coefficient of the load. Bolometer measurements at the output of the 3-dB coupler are essential to the circuit design. The phase was measured by the amount of cancellation which occurs when the reflected signal is fed into the 3-dB four-port directional coupler and compared to a reference signal fed into the other input port. The magnitude was measured by comparing the signal reflected from the load to that reflected by the reference short (waveguide switch #l) . During the latter measurement, the reference signal is terminated (waveguide switch #2).","PeriodicalId":416313,"journal":{"name":"1977 IEEE International Solid-State Circuits Conference. Digest of Technical Papers","volume":"138 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Impedance measurements at millimeter wave frequencies (54.2 GHz)\",\"authors\":\"O. Petersen, C. Bradford, R. Cranmer\",\"doi\":\"10.1109/ISSCC.1977.1155700\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A WAVEGUIDE CIRCUIT (Figure 1) has been designed and constructed to measure impedance a t millimeter wave frequencies. To calculate the load impedance, known standards were used to characterize the network transformation between the p l y e of measurement and the load location. Measurements were performed at 54.2 GHz on specially fabricated loads and on mm-wave PIN diodes. A series of independent measurements were made to determine the relative phase and magnitude of the complex reflection coefficient of the load. Bolometer measurements at the output of the 3-dB coupler are essential to the circuit design. The phase was measured by the amount of cancellation which occurs when the reflected signal is fed into the 3-dB four-port directional coupler and compared to a reference signal fed into the other input port. The magnitude was measured by comparing the signal reflected from the load to that reflected by the reference short (waveguide switch #l) . During the latter measurement, the reference signal is terminated (waveguide switch #2).\",\"PeriodicalId\":416313,\"journal\":{\"name\":\"1977 IEEE International Solid-State Circuits Conference. Digest of Technical Papers\",\"volume\":\"138 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1977 IEEE International Solid-State Circuits Conference. Digest of Technical Papers\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISSCC.1977.1155700\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1977 IEEE International Solid-State Circuits Conference. Digest of Technical Papers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSCC.1977.1155700","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Impedance measurements at millimeter wave frequencies (54.2 GHz)
A WAVEGUIDE CIRCUIT (Figure 1) has been designed and constructed to measure impedance a t millimeter wave frequencies. To calculate the load impedance, known standards were used to characterize the network transformation between the p l y e of measurement and the load location. Measurements were performed at 54.2 GHz on specially fabricated loads and on mm-wave PIN diodes. A series of independent measurements were made to determine the relative phase and magnitude of the complex reflection coefficient of the load. Bolometer measurements at the output of the 3-dB coupler are essential to the circuit design. The phase was measured by the amount of cancellation which occurs when the reflected signal is fed into the 3-dB four-port directional coupler and compared to a reference signal fed into the other input port. The magnitude was measured by comparing the signal reflected from the load to that reflected by the reference short (waveguide switch #l) . During the latter measurement, the reference signal is terminated (waveguide switch #2).