Pub Date : 1977-06-21DOI: 10.1109/MWSYM.1977.1124451
Y. Amblard, A. Peyrat
A low noise X band oscillator, stabilized by a microwave delay line discriminator has been designed for Doppler RADAR applications. It uses a Gunn varactor VCO and a bulk-wave. 5 mu s delay line. The measured phase noise of this source is Single Sideband dBC of -90 dB in a 1 kHz band at 100 kHz from the Carrier, in fairly good accordance with calculated figures.
{"title":"X Band Bulk-Wave Delay Line Stabilized Oscillator","authors":"Y. Amblard, A. Peyrat","doi":"10.1109/MWSYM.1977.1124451","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124451","url":null,"abstract":"A low noise X band oscillator, stabilized by a microwave delay line discriminator has been designed for Doppler RADAR applications. It uses a Gunn varactor VCO and a bulk-wave. 5 mu s delay line. The measured phase noise of this source is Single Sideband dBC of -90 dB in a 1 kHz band at 100 kHz from the Carrier, in fairly good accordance with calculated figures.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"23 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125641749","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124472
H. C. Bell
A tuning procedure for symmetric coupled-resonator filters is presented that significantly reduces development and production tuning time. A method of analysis and application to a 12-resonator combline filter are described. The analysis method allows direct calculation of the loss slope and delay responses.
{"title":"Tuning Procedure for Symmetric Coupled-Resonator Filters","authors":"H. C. Bell","doi":"10.1109/MWSYM.1977.1124472","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124472","url":null,"abstract":"A tuning procedure for symmetric coupled-resonator filters is presented that significantly reduces development and production tuning time. A method of analysis and application to a 12-resonator combline filter are described. The analysis method allows direct calculation of the loss slope and delay responses.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"451 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122050314","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124501
Z. Galani, S. Temple
The experimental and predicted performance of the new broadband planar N-way combiner/divider is presented. The advantage of this combiner/divider over those previously published is that it can be realized in a planar structure. Experimental data on the planar combiner/divider for N=4 and N =7 indicates an average isolation of 20 dB between the N ports from 8 to 12 GHz, and compares favorably with analytic predictions.
{"title":"A Broadband Planar N-Way Combiner/Divider","authors":"Z. Galani, S. Temple","doi":"10.1109/MWSYM.1977.1124501","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124501","url":null,"abstract":"The experimental and predicted performance of the new broadband planar N-way combiner/divider is presented. The advantage of this combiner/divider over those previously published is that it can be realized in a planar structure. Experimental data on the planar combiner/divider for N=4 and N =7 indicates an average isolation of 20 dB between the N ports from 8 to 12 GHz, and compares favorably with analytic predictions.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128188640","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124348
M. Ryken, K. Kotzebue
Because of the multiple frequency nature of TRAPATT diode oscillator operation, circuit optimization is accomplished experimentally, and critical adjustments are usually required for high efficiency operation. In the study reported here, both experimentally-optimized high efficiency and deliberately mistuned TRAPATT circuits were measured in the time domain by a computer-aided time domain automatic network analyzer (TDANA) specifically designed for this application. Time domain reflectometer (TDR) data was used to obtain both the circuit impulse response and circuit admittance as referred to the diode chip. By comparing the results for both optimized and mistuned circuits, it is possible to obtain information on necessary circuit requirements for high efficiency operation.
{"title":"Computer-Aided Time and Frequency Domain Measurements of TRAPATT Diode Oscillators","authors":"M. Ryken, K. Kotzebue","doi":"10.1109/MWSYM.1977.1124348","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124348","url":null,"abstract":"Because of the multiple frequency nature of TRAPATT diode oscillator operation, circuit optimization is accomplished experimentally, and critical adjustments are usually required for high efficiency operation. In the study reported here, both experimentally-optimized high efficiency and deliberately mistuned TRAPATT circuits were measured in the time domain by a computer-aided time domain automatic network analyzer (TDANA) specifically designed for this application. Time domain reflectometer (TDR) data was used to obtain both the circuit impulse response and circuit admittance as referred to the diode chip. By comparing the results for both optimized and mistuned circuits, it is possible to obtain information on necessary circuit requirements for high efficiency operation.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131348312","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124432
J. Plourde, D. Linn, I. Tatsuguchi, C. Swan
High Q, temperature stable dielectric resonators are excellent stabilizing elements for microwave transistor oscillators. A 4 GHz Ba/sub 2/Ti/sub 9/O/sub 20/ resonator integrated with a Si bipolar transistor in a compact oven has a frequency stability of 5 ppm/yr., 4/spl deg/ to 60/spl deg/C (40 to 140/spl deg/F). It is significantly simpler than alternative generators and has 10 to 20 dB lower FM noise. An 18 GHz generator is also described which uses a 4.5 GHz oscillator and a varactor quadrupler.
{"title":"A Dielectric Resonator Oscillator with 5 PPM Long Term Frequency Stability at 4 GHz","authors":"J. Plourde, D. Linn, I. Tatsuguchi, C. Swan","doi":"10.1109/MWSYM.1977.1124432","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124432","url":null,"abstract":"High Q, temperature stable dielectric resonators are excellent stabilizing elements for microwave transistor oscillators. A 4 GHz Ba/sub 2/Ti/sub 9/O/sub 20/ resonator integrated with a Si bipolar transistor in a compact oven has a frequency stability of 5 ppm/yr., 4/spl deg/ to 60/spl deg/C (40 to 140/spl deg/F). It is significantly simpler than alternative generators and has 10 to 20 dB lower FM noise. An 18 GHz generator is also described which uses a 4.5 GHz oscillator and a varactor quadrupler.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131457097","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124375
J.C. Caci
Microwave voltage controled oscillators are prominent components in state of the art communications systems. They feature among other things increased bandwidth and frequency responce. It is the intent of this paper to present a quick and reliable method to test device deviation linearity. This method uses the Bessel function measurement technique. The Bessel functions are computer generated graphs normalized to a reference unmodulated carrier vs modulation index. The presentation of this graph is the key factor in reducing the amount of data reduction necessary to present the test results in usable form. This paper also discusses the singularity problem in determining modulation index from multivariate sideband levels.
{"title":"Microwave Deviation Linearity Test Method","authors":"J.C. Caci","doi":"10.1109/MWSYM.1977.1124375","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124375","url":null,"abstract":"Microwave voltage controled oscillators are prominent components in state of the art communications systems. They feature among other things increased bandwidth and frequency responce. It is the intent of this paper to present a quick and reliable method to test device deviation linearity. This method uses the Bessel function measurement technique. The Bessel functions are computer generated graphs normalized to a reference unmodulated carrier vs modulation index. The presentation of this graph is the key factor in reducing the amount of data reduction necessary to present the test results in usable form. This paper also discusses the singularity problem in determining modulation index from multivariate sideband levels.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132126319","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124347
F. Bayuk, J. Raue
A technology development is described which has clearly advanced the state-of-the-art in high power, high performance solid state amplifiers. Five watts of output power at 37 GHz were achieved with a five-stage amplifier. Three stages operate in the negative resistance mode with 2 GHz of bandwidth, the final two stages are injection locked. The total amplifier gain is 33 dB. High efficiency power combining is used in the two power stages. Extensive use has been made of computer aided design, both in the negative resistance amplifier development and in the modeling and optimization of the multiple diode power combining structures. Novel broadband circulators couple the individual stages and provide interstage isolation with insertion loss levels of 0.1 dB per path. The entire amplifier, including diode current regulators, is enclosed in a housing 6 x 8 x 3 inches in size, and weighs 9 pounds.
描述了一项技术发展，该技术在高功率、高性能固态放大器方面取得了明显的进步。在37千兆赫下，5瓦的输出功率通过一个五级放大器实现。三个阶段以负电阻模式工作，带宽为2ghz，最后两个阶段为注入锁定。放大器的总增益为33 dB。两个功率级采用高效率的功率组合。计算机辅助设计在负阻放大器的开发和多二极管功率组合结构的建模和优化中得到了广泛的应用。新型宽带环行器耦合各个级，并提供级间隔离，插入损耗水平为每路0.1 dB。整个放大器，包括二极管电流调节器，被封装在6 x 8 x 3英寸的外壳中，重9磅。
{"title":"KA-Band Solid State Power Amplifier","authors":"F. Bayuk, J. Raue","doi":"10.1109/MWSYM.1977.1124347","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124347","url":null,"abstract":"A technology development is described which has clearly advanced the state-of-the-art in high power, high performance solid state amplifiers. Five watts of output power at 37 GHz were achieved with a five-stage amplifier. Three stages operate in the negative resistance mode with 2 GHz of bandwidth, the final two stages are injection locked. The total amplifier gain is 33 dB. High efficiency power combining is used in the two power stages. Extensive use has been made of computer aided design, both in the negative resistance amplifier development and in the modeling and optimization of the multiple diode power combining structures. Novel broadband circulators couple the individual stages and provide interstage isolation with insertion loss levels of 0.1 dB per path. The entire amplifier, including diode current regulators, is enclosed in a housing 6 x 8 x 3 inches in size, and weighs 9 pounds.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134070179","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124462
U. Gysel, J. Watjen
A 7-to-11-GHz frequency discriminator with high linearity has been built using microwave integrated circuits (MICs). The critical subcomponent parameters of the discriminator were determined by computer analysis. The key elements of the design are balanced detectors with controlled terminations for internally generated harmonics and a gain equalizer to compensate for frequency-dependent losses. Linearity of the unit is better than /spl plusmn/0.85%.
{"title":"Wide-Band Frequency Discriminator with High Linearity","authors":"U. Gysel, J. Watjen","doi":"10.1109/MWSYM.1977.1124462","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124462","url":null,"abstract":"A 7-to-11-GHz frequency discriminator with high linearity has been built using microwave integrated circuits (MICs). The critical subcomponent parameters of the discriminator were determined by computer analysis. The key elements of the design are balanced detectors with controlled terminations for internally generated harmonics and a gain equalizer to compensate for frequency-dependent losses. Linearity of the unit is better than /spl plusmn/0.85%.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133450002","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124376
G. Heiter
A multitone intermodulation (IM) test set has been constructed which generates up to three VHF test tones with conventional accuracy (10/sup 3) and stability (<10/sup 4). Using a phase locked microwave generator as local oscillator source, these tones are up-converted, filtered and amplified individually to maintain spectral purity of the microwave test tones. High mutual isolation is provided in the combining circuitry. The detector circuit for signal and IM product tones uses selective tone attenuation to improve its linearity to M/sub alpha+beta-gamma/ <-113 dB. Tone levels are measured to -110 dBm with >80 dB discrimination outside a 20 kHz bandwidth, using a narrow band (1.7 kHz) tunable VHF receiver.
{"title":"A Microwave Linearity Test Set","authors":"G. Heiter","doi":"10.1109/MWSYM.1977.1124376","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124376","url":null,"abstract":"A multitone intermodulation (IM) test set has been constructed which generates up to three VHF test tones with conventional accuracy (10/sup 3) and stability (<10/sup 4). Using a phase locked microwave generator as local oscillator source, these tones are up-converted, filtered and amplified individually to maintain spectral purity of the microwave test tones. High mutual isolation is provided in the combining circuitry. The detector circuit for signal and IM product tones uses selective tone attenuation to improve its linearity to M/sub alpha+beta-gamma/ <-113 dB. Tone levels are measured to -110 dBm with >80 dB discrimination outside a 20 kHz bandwidth, using a narrow band (1.7 kHz) tunable VHF receiver.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115429081","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 : 1977-06-21DOI: 10.1109/MWSYM.1977.1124496
L.T. Yuan
A new broadband mixer capable of operating over two full adjacent waveguide bands (18 to 26.5 GHz and 26.5 to 40 GHz) is described. The maximum conversion loss is 6.5 dB from 20 to 40 GHz with a corresponding average DSB noise figure of 5.7 dB.
{"title":"Low Noise Octave Bandwidth Waveguide Mixer","authors":"L.T. Yuan","doi":"10.1109/MWSYM.1977.1124496","DOIUrl":"https://doi.org/10.1109/MWSYM.1977.1124496","url":null,"abstract":"A new broadband mixer capable of operating over two full adjacent waveguide bands (18 to 26.5 GHz and 26.5 to 40 GHz) is described. The maximum conversion loss is 6.5 dB from 20 to 40 GHz with a corresponding average DSB noise figure of 5.7 dB.","PeriodicalId":299607,"journal":{"name":"1977 IEEE MTT-S International Microwave Symposium Digest","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1977-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114581360","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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