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IEEE NTC,Conference Proceedings Microwave Systems Conference

17-19 May 1995

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Displaying Results 1 - 25 of 49
  • IEEE NTC '95 The Microwave Systems Conference. Conference Proceedings

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (336 KB)
    Freely Available from IEEE
  • Index

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (60 KB)
    Freely Available from IEEE
  • Novel algorithms for FMCW range finding with microwaves

    Publication Year: 1995, Page(s):129 - 132
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    The output of a conventional FMCW ranging measurement is the real-part of the free-space transfer function. However, the missing imaginary part leads to an artificial but non-negligible measurement error, when employing a Fourier transform for distance evaluation. Novel algorithms for processing the FMCW measurement raw data are described, allowing complete suppression of the aforementioned image-... View full abstract»

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  • A low cost 3.6 V single-supply GaAs power amplifier IC for the 1.9-GHz DECT system

    Publication Year: 1995, Page(s):37 - 40
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A GaAs power amplifier IC in a SOIC-16 plastic package has been developed for the 1.9 GHz Digital European Cordless Telephone (DECT) system. The power amplifier consists of two stages with all matching structures on chip and has a total area of 1.84 mm2. At -2 dBm input power and 3.6 volts, the typical power amplifier achieves 26 dBm output power with 30% power-added efficiency, while o... View full abstract»

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  • Two frequency multifunctional radar for mobile application

    Publication Year: 1995, Page(s):125 - 128
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    A radar system for vehicles is presented working with two modules at different frequencies and a special arrangement of the modules. From the resulting Doppler spectra in the baseband and in the IF band the velocity, the tilt angle and the height with respect to ground, the direction of the movement of a vehicle and the classification of the road condition can be derived. Even if the baseband sign... View full abstract»

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  • Expanding search code acquisition receiver structure, simulation and analysis

    Publication Year: 1995, Page(s):149 - 152
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    In the area of direct sequence spread spectrum (DSSS) communications, a code phase search is required for coarse code acquisition. In the case of a typical Global Positioning System (GPS) receiver, the receiver acquisition of the C/A code narrows the uncertainty for Precise (P) code acquisition. Depending upon the pdf of the code phase uncertainty, various search algorithms may be employed for P c... View full abstract»

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  • HF array simulations

    Publication Year: 1995, Page(s):233 - 236
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    The Ionospheric Research Instrument (IRI) is an HF transmitting array facility currently being constructed in Gakona, Alaska, as part of the HF Active Auroral Research Program (HAARP). This program will result in an ionospheric heater facility in the auroral region, dedicated to the exploration of ionospheric phenomena that can be induced by ionospheric modification. For an HF array where the tran... View full abstract»

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  • State-of-the-art semiconductor devices for mobile communication systems in Europe

    Publication Year: 1995, Page(s):65 - 72
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1240 KB)

    The mobile communication market is the current driving force of the telecommunication industry. A new quality of flexible, wireless and integrable services is required having impact on telecommunication networks, computers, automotive management systems, air traffic control etc. An actual overview of mobile and related systems will be given in the beginning followed by the description of enhanced ... View full abstract»

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  • A miniature 17/12 GHz MMIC receiver for satellite communication

    Publication Year: 1995, Page(s):97 - 100
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    We have developed a novel high gain, low noise, miniature 17/12 GHz receiver with MMIC insertion for satellite communication. This receiver has a nominal conversion gain of 60+/-0.25 dB with gain adjustment range of 60 dB and noise figure of 1.6 dB. The third order intermodulation is 32 dBc @ -50 dBm input drive level, from 17.3 to 17.8 GHz at room temperature. It has a size of 5.7×1.8×... View full abstract»

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  • A double-polysilicon bipolar process with a 0.3-μm minimum emitter width and NMOS transistors for low power wireless applications

    Publication Year: 1995, Page(s):33 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    A 0.6-μm 3.5-V silicon bipolar process is developed for low power and high speed operation in wireless applications. The process features 35-GHz fT bipolar transistors with a 0.3-μm electrical emitter width, lateral pnp transistors, polysilicon-to-n+ plug capacitors, NMOS transistors with a 10-nm gate oxide layer for low on-resistance, and inductors fabricated using a d... View full abstract»

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  • X-band receiver protector using glass technology

    Publication Year: 1995, Page(s):167 - 170
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The paper describes a receiver protector providing passive limiting and active switching for an X-band phased array radar. The 1650 μm×4440 μm circuit uses a glass integrated circuit process and discrete PIN diodes to achieve: loss: 1.0 dB. VSWR: 1.25:1. Isolation: 40 dB. Power handling: 10 W CW View full abstract»

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  • Imaging applications of millimeter wave sensors in robotics and road traffic

    Publication Year: 1995, Page(s):115 - 124
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    Many tasks that can be fulfilled by millimeter wave sensors are in principle the solution to 2-D or 3-D imaging problems. After a recapitulation of the basics of obtaining 3-D resolution in spatial frequency domain the various methods of obtaining longitudinal resolution such as pulse, pulsed FM, FMCW and PN modulation are discussed as well as principles to achieve lateral resolution in one or two... View full abstract»

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  • A novel microwave omnidirectional antenna for wireless communications

    Publication Year: 1995, Page(s):221 - 224
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    A novel microwave omnidirectional antenna is proposed in this paper for wireless communications. This antenna is constructed with cavity-restrained multi-stacked dielectric disks. Vertical polarized omnidirectional radiation patterns are obtained from radiative ring slots in the side wall of dielectric-metal cavities operating on TM01δ mode. High omnidirectional gain is realized w... View full abstract»

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  • A highly efficient, small size 50 watt power amplifier for mobile satcom applications

    Publication Year: 1995, Page(s):145 - 147
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    This paper describes the development of a 50 watt power amplifier operating in the Ku-band satellite uplink frequency range of 14-14.5 GHz. High efficiency (greater than 25%), very small size (less than 35 cubic inches) and light weight (2.3 lbs) make this amplifier an ideal choice for use in mobile satellite terminals. Details of the development effort, a description of the developed product, and... View full abstract»

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  • Paradigm shift in RF avionics sensor implementation

    Publication Year: 1995, Page(s):53 - 56
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Military avionics developers have increasing impetus to provide more capability at lower cost. Coupled with these user needs are an increasing focus on the application of commercial off-the-shelf products and technology. The scope of sensor system design is focusing from highly autonomous to networked operation. Thus, military avionics are evolving to a form more synergistic with commercial telesy... View full abstract»

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  • GaAs MMIC based components and frontends for millimeterwave communication and sensor systems

    Publication Year: 1995, Page(s):83 - 86
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    In the millimeter wave region several communication and sensor systems are emerging which presently are served only by III/V based technologies. First sensor systems of relevant volume market are tested at 76 GHz for automotive sensors, with other systems operating at 60 GHz and 94 GHz. For mm-wave communication systems volume applications arise at 38 GHz for the interconnection of PCN cells. This... View full abstract»

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  • Recent activities on millimeter wave indoor LAN system development in Japan

    Publication Year: 1995, Page(s):7 - 10
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The necessity for 60 GHz band development in Japan, the features of millimeter wave (MM-wave) indoor LAN, developments needed for its realization, and propagation studies to implement indoor LAN are reviewed. This paper describes a MM-wave minimum delay spread LAN under development in Japan, results of its propagation simulation, absorbable construction materials being considered for the system, a... View full abstract»

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  • True time-delay fiber-optic control of a phased-array transmitter with three-octave bandwidth

    Publication Year: 1995, Page(s):175 - 178
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    We demonstrate a true time-delay fiber-optically controlled phased-array transmitter with eight broadband spiral elements in a sparsely-populated array. The transmitter bandwidth is microwave-component limited to 2-18 GHz frequency range. The transmitter shows ±50° azimuth steering with no observed squint over a complete frequency range View full abstract»

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  • Square spiral microstrip antennas for wireless applications

    Publication Year: 1995, Page(s):229 - 232
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The characteristics of wide bandwidth and simplicity of construction make square spiral microstrip antennas attractive for today's wireless applications. An overview of a method of moments analysis for such antennas is covered, and data obtained from a FORTRAN program implemented on a standard 486 personal computer is presented for a multifunction 900 MHz to 2.1 GHz test case View full abstract»

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  • Self-modulated Gunn diode self-oscillating mixer

    Publication Year: 1995, Page(s):61 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    The use of low frequency oscillations that occur in the bias circuit of a Gunn oscillator for Doppler signal detection in a Gunn self-oscillating mixer is described. This approach increases sensitivity, improves performance of a Gunn self-oscillating mixer and simplifies the scheme of Doppler signal processing. The system can be used as a short range self-mixing Doppler radar View full abstract»

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  • A novel uniplanar bi-phase (0°-180°) modulator/mixer

    Publication Year: 1995, Page(s):93 - 96
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The overall goal of this paper is to design a new modulator/mixer at 38 GHz in uniplanar technology. The primary objective is to develop a theoretical and an experimental study of each elementary block in the millimeter frequency range, allowing us directly to design the device at 38 GHz. As part of this study, a uniplanar modulator/mixer was built in X band in order to aid in the verification of ... View full abstract»

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  • A novel 3 V, 7 mA PHEMT GaAs active MMIC mixer/LNA for wireless applications

    Publication Year: 1995, Page(s):29 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    A novel monolithic integrated active mixer/LNA utilizing advanced pseudomorphic GaAs FETs has been developed for a mobile wireless receiver. RF coverage is 900 MHz to 2400 MHz. The mixer/LNA operates on a single 3 volt supply at 7 mA. The mixer provides 4 dB conversion gain with a -10 dBm LO drive. The LNA provides a 1.6 dB noise figure and 14 dB gain. The die is small and packaged in the SSOP-16 ... View full abstract»

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  • An 18 GHz circularly polarised multilayer active microstrip antenna subarray using MMIC amplifiers

    Publication Year: 1995, Page(s):163 - 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    The paper presents an 18 GHz circularly polarised multilayer active antenna subarray using MMIC amplifiers. With the advantage of a multilayer structure, the radiation patterns from the antenna side are not affected by the radiation from circuit side. An extra gain of 15.46 dB has been measured in comparison to the passive array. This type of array can be the ideal building block for large microst... View full abstract»

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  • Over-temperature noise modeling of PHEMTs

    Publication Year: 1995, Page(s):247 - 250
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    A new procedure is presented for modeling the variations with temperature of the noise source coefficients related to the gate and the drain of a field effect transistor (FET). The experimental results obtained for a temperature range over -60°C to 140°C are compared to two recent similar studies, using a pseudomorphic HEMT. It is demonstrated that good agreement can be obtained for some o... View full abstract»

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  • A test target generator for wideband pulsed Doppler radars

    Publication Year: 1995, Page(s):109 - 111
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    A test target simulator (TTS) based on a fiber-optic delay line (FODL) has been designed for realistic testing and characterizing of wideband pulsed Doppler radars. The TTS can simulate one or two targets at different radar cross sections (RCSs), different Doppler, and different ranges in the presence of uncorrelated noise or interference. With one target, clutter and multipath effects can also be... View full abstract»

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