Advanced MMIC radiometers

Sholley, M.; Barber, G.; Raja, R.; Jackson, Charles M.

doi:10.1109/apmc.2000.925727

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Three receiver noise figures have been considered in the range between 4 dB to 8 dB. These values include the majority of the millimeter-wave systems up to date; thus, they are widely feasible with the present technologies [ 21 ].…”

Section: Instrument Resolutionmentioning

confidence: 99%

Microwave Radiometers for Fire Detection in Trains: Theory and Feasibility Study

Alimenti

Roselli

Bonafoni

2016

Sensors

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This paper introduces the theory of fire detection in moving vehicles by microwave radiometers. The system analysis is discussed and a feasibility study is illustrated on the basis of two implementation hypotheses. The basic idea is to have a fixed radiometer and to look inside the glass windows of the wagon when it passes in front of the instrument antenna. The proposed sensor uses a three-pixel multi-beam configuration that allows an image to be formed by the movement of the train itself. Each pixel is constituted by a direct amplification microwave receiver operating at 31.4 GHz. At this frequency, the antenna can be a 34 cm offset parabolic dish, whereas a 1 K brightness temperature resolution is achievable with an overall system noise figure of 6 dB, an observation bandwidth of 2 GHz and an integration time of 1 ms. The effect of the detector noise is also investigated and several implementation hypotheses are discussed. The presented study is important since it could be applied to the automatic fire alarm in trains and moving vehicles with dielectric wall/windows.

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Section: Instrument Resolutionmentioning

confidence: 99%

Microwave Radiometers for Fire Detection in Trains: Theory and Feasibility Study

Alimenti

Roselli

Bonafoni

2016

Sensors

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“…Reduction of the size and weight of JMR without increases in the cost and complexity was achieved by using MMICs and hybrid microwave integrated circuits. The receiver at the primary water vapor channel, which is 23.8 GHz, was fabricated using indium phosphide (InP) MMIC technology [16]. This Dicke radiometer module, including all components up to the voltageto-frequency converter, is only 13 × 6 × 4 cm and consumes less than 2 W of power.…”

Section: A Jason Microwave Radiometer (Jmr)mentioning

confidence: 99%

“…As part of this program, a 118-GHz MMIC-based total power radiometer module was developed, with dimensions of 8.2 × 6 × 3 cm, a power consumption of about 2.5 W, and a mass of about 0.3 kg [13], [16]. The use of low-noise InP MMIC technology in its front end gave a radiometric sensitivity of about 0.6 K for an integration time of 1 s. The HSWMRM is a radiometer module designed for a focalplane array (FPA) for passive imaging of millimeter-wave thermal radiation.…”

Section: B Integrated Multispectral Atmospheric Sounder (Imas)mentioning

confidence: 99%

A Miniaturized Spectrometer Radiometer Based on MMIC Technology for Tropospheric Water Vapor Profiling

Iturbide-Sanchez

Reising

Padmanabhan

2007

IEEE Trans. Geosci. Remote Sensing

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Abstract-The fabrication of a miniaturized ground-based water vapor profiling radiometer demonstrates the capability of monolithic microwave and millimeter-wave integrated circuit technology to reduce the mass and volume of microwave remote sensing instrumentation and to reduce substantially the necessary operational power consumption and size of the radiofrequency and intermediate-frequency sections. Since those sections comprise much of the mass and volume of current microwave receivers, the fabrication of this system represents an important contribution to the design of microwave radiometers. This miniaturized radiometer implementation is particularly well suited to benefit from the cost savings associated with mass production. The small size of the radiometer (24 × 18 × 16 cm) reduces the power required by the temperature control system and allows a rapid warm-up to the temperature set point as well as maintenance of a highly stable internal temperature. Exhibiting very similar statistical properties, the four channels of the radiometer have measured Allan times of greater than 40 s. Measurement results demonstrate that the instrument achieves a sensitivity of better than 0.2 K for 3 s of integration time. Preliminary comparisons of measured brightness temperatures with simulation results based on radiosonde data show good agreement, which are consistent with previously reported results.Index Terms-Atmospheric measurements, humidity measurement, microwave radiometry, monolithic microwave and millimeter-wave integrated circuits (MMICs), multichip modules (MCMs), remote sensing.

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MMICs and Remote Sensing Science Instruments - A Technology Success Story

Gaier

2012

2012 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS)

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Advanced MMIC radiometers

Cited by 5 publications

References 3 publications

Microwave Radiometers for Fire Detection in Trains: Theory and Feasibility Study

Microwave Radiometers for Fire Detection in Trains: Theory and Feasibility Study

A Miniaturized Spectrometer Radiometer Based on MMIC Technology for Tropospheric Water Vapor Profiling

MMICs and Remote Sensing Science Instruments - A Technology Success Story

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