{"title":"New type of band-pass filters for mobile radio communication equipment","authors":"M. Makimoto, S. Yamashita, K. Suzuki","doi":"10.1109/VTC.1978.1622516","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622516","url":null,"abstract":"This paper describes compact band-pass filters for duplexer of 900 MHz high capacity mobile radio communication equipment. Band-pass filters developed here are constructed with a newly developed resonator of which Q-factor is higher than conventional capacitor-loaded resonators especially in the range of the small size resonator. Another type of filter with this resonator is fabricated using high dielectric material which was developed for the purpose of resonators at microwave frequency.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125624517","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":"User satisfaction and demand models for personal radio planning","authors":"R. Stone","doi":"10.1109/VTC.1978.1622550","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622550","url":null,"abstract":"This paper discusses user satisfaction and demand projections for the CB Radio Service and for possible new personal radio services at VHF or UHF frequencies. These projections were generated by a computer model developed by the Advanced Research Resources Organization (ARRO) for the FCC's Personal Radio Planning Group (PRPG). The model uses data obtained from a national survey of users and nonusers of CB radio which assessed people's communication needs, perceptions of radio services, radio equipment purchasing behavior, radio use behavior, and lifestyle. The inputs to this model are the public's perception of how well a service can accomodate various communication needs, in comparison with CB radio, and equipment cost. The perception estimates are based on the services projected performance and social characteristics.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117339045","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":"Selective signalling for portable applications","authors":"L. E. Nelson","doi":"10.1109/VTC.1978.1622530","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622530","url":null,"abstract":"The selective call has numerous signalling and control applications in portable communications, but has perhaps seen i ts most extensive development for metropolitan paging. In the past, many of these applications were handled using a single audio tone and a narrow band filter for detection. The need for more addres ses and higher throughput to accommodate the metropolitan paging requirements has resulted in the development of various multi-sequential tone systems, Sequent ia l tone systems feature good sensit ivity, adequate false alarm protection, short (. 2 second per address ) t ransmiss ion t imes , and code capac i t ies in excess of 100,000 addresses.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134074117","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":"The power wheel — Electromotive torque for vehicular applications","authors":"G. Goldman","doi":"10.1109/VTC.1978.1622520","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622520","url":null,"abstract":"The Power Wheel is a compact, self-contained motor in a wheel that establishes a torque drive. Dual-functioning circuitry that performs brushless commutation and polyphase rectification is also contained entirely within the wheel. Thus, with a substantial reduction in both the number of external control system components and mechanical drive-system couplings, this electric motor can power a 4-wheel-drive electric vehicle in normal driving modes and serve as a power-recovery generator during braking. Variable-speed operation of the motor in forward, neutral, and reverse thrust modes, as well as polyphase rectification of the induced voltage during generator operation, is principally directed by a microprogrammed controller. Utilization of state-of-the-art electronic devices in the controller circuitry has contributed to the compactness of the design, ease of fabrication, and reduction in the cost, complexity and number of components associated with motor and generator control system interfaces.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130311171","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 comparison between the energy deposition in portable radio operators at 900 MHz and 450 MHz","authors":"Q. Balzano, O. Garay, F. R. Steel","doi":"10.1109/VTC.1978.1622508","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622508","url":null,"abstract":"This paper compares the results of recent measurements at 800-900 MHz of electromagnetic energy deposition in simulated portable radio operators with results previously obtained at 450 MHz. The antenna used with the 800-900 MHz radiois a sleeve dipole, which is approximately the same size as a resonant whip of a 450 MHz portable transmitter. The mechanisms of power deposition in flat slabs of biological tissue at the two different frequencies show some similarity, although there is higher power density deposition (mW/cm3) at 800-900 MHz for equal power flow into the tissue (mW/cm2). The reason for this phenomenon resides in the fact that at the higher frequencies, the E.M. energy tends to be absorbed in the superficial layers of the tissue. The power deposition measurements at 800-900 MHz in a phantom with human features have shown the presence of a slight focusing of RF energy by the shape of the frontal surfaces of the human head. This focusing was not detected at 450 MHz and causes deeper energy deposition in the simulated brain tissue at 800-900 MHz than at 450 MHz.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130313496","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":"Design study for a flywheel-electric car","authors":"W. M. Brobeck","doi":"10.1109/VTC.1978.1622523","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622523","url":null,"abstract":"The design and calculated performance of an electric automobile power plant using a flywheel as the energy storage device and an on-board internal combustion engine to increase the travel range is described. The argument is presented that the use of such vehicles can significantly decrease the dependence of automotive transportation on petroleum and with increased availability of charging facilities can make automotive transportation entirely independent of petroleum supply.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132188509","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":"Human factors evaluation of calling procedures for HCMTS","authors":"B.L. Hanson, C.E. Bronell","doi":"10.1109/VTC.1978.1622510","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622510","url":null,"abstract":"The Bell System's High Capacity Mobile Telecommuni cation System design results in some major departures from present telephone service in the mode of user operation. Under local microprocessor control, the called number is dialed into a storage register where it is held until the user places the call by an addi tional operation (\"pre-origination dialing\"). The auditory feedback typical of call placing (TOUCH-TONE calling signals, dial tone, and network signaling sounds) will be absent. The dialed-number storage register provides capability for additional service features: ability to recall the last number called without redialing (\"last number repeat\"), and ability to dial a number into the storage register at some unspecified time prior to actual call-placing (\"scratch pad\") •","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130284037","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 experimental system for processing movement information of vehicle","authors":"T. Tsumura, N. Fujiwara","doi":"10.1109/VTC.1978.1622527","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622527","url":null,"abstract":"This paper presents a proposed experimental system for processing movement information of vehicle. Using self-contained on-line computing processor which computes position and heading angle (azimuth), trajectory of location of vehicle has been successfully displayed by an experimental system implemented. Principles of self-contained computing system are as follows: accurate digital moving pick-ups are set on both sides of vehicle wheels, accumulation of both sides data which are picked periodically is for distance measuring and subtraction of both sides data is for heading computation, self-contained processor computes the location and heading angle, and also presents location data on X-Y recorder and digital displays. Coordinate location and heading computations are performed by electronic hard-ware mechanization. Methods for reduction of induced errors are discussed and experimentally demonstrated.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129736637","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 brief review of air brake wheel lock control systems","authors":"T. Jones, D. J. Bonvallet","doi":"10.1109/VTC.1978.1622541","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622541","url":null,"abstract":"The stopping distances prescribed in Federal Motor Vehicle Safety Standard 121 effective March 1975 through March 1976 required that all wheels on the vehicle develop near peak retarding force. Many trucks and buses can experience very large changes in load distribution between empty and full load. An adaptive type brake system is required to achieve near peak retarding force at each wheel regardless of load distribution. This requirement was satisfied by the installation of electronic wheel lock control systems on all axles of air-braked vehicles; these systems are also referred to as antiskid systems. They employ a wheel speed sensor on each wheel, an electronic logic module to make the decision that a wheel is tending to lock up, and control valves to regulate the air pressure to the individual axles. It is a well-known fact that lateral vehicle control is difficult to maintain when rear wheels lock up and steering is ineffective when front wheels lock up. The truck and bus industry recognizes the outstanding potential safety benefits associated with wheel lock control; however they have had considerable trouble implementing the system in a reliable manner.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123403589","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":"The Denver transitway vehicle system — A preliminary design","authors":"W. Chafee, J. Haugen","doi":"10.1109/VTC.1978.1622579","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622579","url":null,"abstract":"The Transitway/Mall is a major transportation project designed for the central business district of metropolitan Denver. Its goals are threefold: 1. To lessen traffic congestion in the downtown area 2. To provide more efficient bus service to city and suburban neighborhoods 3. To create a new pedestrian environment in the downtown area -- a place for people. The project will transform 16th Street between Broadway and Larimer into a tree-lined pedestrian precinct. Electric battery-powered shuttle vehicles will carry passengers to and from transportation transfer facilities located at each end. Express computer buses will enter the transfer facilities at a below-street concourse where riders will transfer to transitway vehicles waiting at ground level. Shuttles will leave the terminals every 70 seconds stopping at each block along 16th Street. By intercepting express buses at the edges of the retail-office core, there will be fewer buses on downtown streets and therefore substantially less traffic congestion. Also commuter buses will be able to get in and out of downtown much faster, enabling them to make additional productive trips during rush hour. The vehicle system is being designed to meet some unique requirements of the Denver Transitway/Mall. The preliminary vehicle system design consists of performance requirements, an operations profile, fleet sizing, maintenance program, and maintenance facility requirements, in addition to vehicle specifications. Specified features of the battery-powered vehicle include a lateral guidance system, a low floor, wide doors, a large expanse of glass, a capability of operating in tandem, and a rear-mounted dc traction motor.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126478282","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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