Millimeter IMPATT Sources for the 130-170-GHz Range

Weller, K.P.; Ying, R.S.; Lee, D.H.

doi:10.1109/tmtt.1976.1128954

Cited by 17 publications

(3 citation statements)

References 7 publications

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“…At the microwave power level used to drive the doubler, shot-noise and avalanche processes may be occuring. The former process is not known to produce a 1/f noise contribution, but the latter may (10). In any event, the degradation at the modulation frequency of 205 Hz used in the measurements described below is not more than 3 dB.…”

Section: Lbl-8789mentioning

confidence: 96%

Sensitivity and response time improvements in millimeter-wave spectrometers

Kolbe¹,

Leskovar²

1980

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A new version of a microwave spectrometer for the detection of gaseous pollutants and other atmospheric constituents is described. The spectro meter, which operates in the vicinity of 70 GHz, employs a Fabry-Perot resonator as a sample cell and uses superhetrodyne detection for high sensitivity. The spectrometer has been modified to incorporate a frequency doubler modulated at 30 MHz to permit operation with a single Gunn oscillator source. As a result, faster response time and somewhat greater sensitivity is obtained. The spectrometer is capable of detecting a minimum concentration of 1 ppm of S0~ diluted in air with a 1 second time constant. For OCS diluted in air, the minimum detectable concentration is 800 ppb and with a 10 second time constant 300 ppb.

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Section: Lbl-8789mentioning

confidence: 96%

Sensitivity and response time improvements in millimeter-wave spectrometers

Kolbe¹,

Leskovar²

1980

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“…By varying the diameter of bias pin, the package inductance changes thereby varying the frequency of IMPA TT source. Inductance for the centered inductive post of diameter d and lengt11 I' in waveguide of width w is given by [3].…”

Section: Mechanical Tuningmentioning

confidence: 99%

94 GHz CW IMPATT Source

Shukla

Singh

Misra

1993

IETE Technical Review

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“…This can be understood qualitatively. Inductance for the centered inductive post of diameter d and length I in wave guide width w given by[3] L = 2 /In ( :~· ) nh em (4)…”

mentioning

confidence: 99%