Low-noise millimeter and submillimeter wave receivers

Rozanov, B. A.; Rozanov, S. B.

doi:10.1109/msmw.1998.758921

Cited by 3 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4] These receivers are usually composed of diode mixers in millimeter and submillimeter wavelength, which are cooled down to cryogenic temperatures in order to have low noise and therefore to improve the sensitivity. [5][6][7] On the other hand, other types of microwave broadband receivers used in radio astronomy, as well as in other radio physics applications, usually have square-law detectors at their outputs, which make nonlinear transforms with the aim of obtaining an output DC value proportional to the variance of input noise-like signal. 8,9 These receivers are very sensitive radiometers, where the received microwave fluctuation electromagnetic radiation is detected with a Schottky diode working as square-law device.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a lossy transmission lines based diode detector at cryogenic temperature

Villa

Aja

Fuente

et al. 2016

Review of Scientific Instruments

View full text Add to dashboard Cite

Articles you may be interested inThis work is focused on the design, fabrication, and performance analysis of a square-law Schottky diode detector based on lossy transmission lines working under cryogenic temperature (15 K). The design analysis of a microwave detector, based on a planar gallium-arsenide low effective Schottky barrier height diode, is reported, which is aimed for achieving large input return loss as well as flat sensitivity versus frequency. The designed circuit demonstrates good sensitivity, as well as a good return loss in a wide bandwidth at Ka-band, at both room (300 K) and cryogenic (15 K) temperatures. A good sensitivity of 1000 mV/mW and input return loss better than 12 dB have been achieved when it works as a zero-bias Schottky diode detector at room temperature, increasing the sensitivity up to a minimum of 2200 mV/mW, with the need of a DC bias current, at cryogenic temperature. C 2016 AIP Publishing LLC.[http://dx

show abstract

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a lossy transmission lines based diode detector at cryogenic temperature

Villa

Aja

Fuente

et al. 2016

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

“…In [3], the authors proposed using an RTD as a nonlinear element in subharmonic mixers. These mixers have been widely used in the intensively developing terahertz frequency range as electromagnetic radiation receivers (detectors) [4]. As shown in [5], RTD-based mixers have some advantages over the known mixers of this frequency range.…”

Section: Introductionmentioning

confidence: 99%

Factors reducing the cut-off frequency of resonant tunneling diodes

Alkeev

Аверин

Dorofeev

et al. 2012

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

The impedance dependence of resonant tunneling diodes (RTDs) based on the GaAs/AlAs heterosystem is investigated in the range of 0.1–40 GHz. The analysis shows that the impedance of about 90% of unbiased RTDs is well described by an equivalent circuit (EC) consisting of parallel-connected resistance and capacitance and an additional resistance connected in series with this parallel combination. When a bias voltage is applied to these RTDs, one needs a “quantum” inductance LQ to describe the impedance behavior. We find the value of LQ and calculate the delay time of electrons in the quantum well (QW) of an RTD. The impedance of the rest 10% of the RTDs is well described by an EC that takes into account the recharge of localized electron states at the heterointerfaces of the active layers. Expressions for the cut-off frequencies that take into account the delay of electrons in the QW and the localized electron states at the heterointerfaces are derived. It is shown that the delay of electrons in the QW and localized electron states at the heterointerfaces may significantly reduce the cut-off frequency of RTDs.

show abstract