Signal Model Analysis of a 35ghz Alternating Current Direct Detection Receiver

Yang, Menglong; Guan, Fuhong; Xu, Jie; Shi, Xiang; Sun, Xuejun

doi:10.2528/pier08111605

Cited by 6 publications

(4 citation statements)

References 14 publications

(13 reference statements)

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“…When the radiometer antenna beam scans between the chopper (coated with microwave absorber) and the target, the antenna temperature can be illustrated as a bell‐shaped pulse signal. The output voltage is a low‐frequency AC signal, given by :

Δ U = B e^{- π c^{2} v^{2} t^{2}}

where B is output voltage amplitude constant, c is antenna constant, and ν is chopper scanning constant.…”

Section: Design Of Imaging Systemmentioning

confidence: 99%

“…In previous researches, the reconfiguration of polarization diversity is discussed for linear polarization (LP) to LP [5], LP to circular polarization (CP) [6], and CP to CP, that is, right-handed CP (RHCP) to left-handed CP (LHCP) and vice versa [7,8]. Especially, for a reconfigurable single-feed microstrip antennas for CP diversity have been implemented by a relatively complex radiator and matching structure because of bias circuits for switching devices and matching networks for changing antenna impedances at each CP sense [9]. In addition, many numbers of switching devices may suffer from a heavy direct current (DC) power consumptions for controls [10].…”

Section: Introductionmentioning

confidence: 99%

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Development of passive millimeter wave imaging for concealed weapon detection indoors

Xiang

Yang

2014

Micro & Optical Tech Letters

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this MZI waveguide sensor with optimized sensing length of 1,1515 mm is 225.4 dB/RIU. We know that DL 53r=sensitivity , where 3r is the standard deviation of the system [12]. Following the magnification of the measured standard deviation 3r in Figure 4(b), the refractive sensing DL in three standard deviations is with the magnitude of 10 26 RIU. CONCLUSIONThis study theoretically and experimentally investigated the periodic ambiguity of the MZI waveguide sensor without increasing complexity in standard fabrication process and testing system. The improved sensor with a sensitivity of 225.4 dB/RIU, a DL of 10 26 RIU, a measuring range from 1.31 to 1.42, and a high repeatability, operates at 1550-nm wavelength, is fully competent in refractive sensing field. Further research will focus on immobilizing a sensitive layer for specific biochemical applications [13, 14]. ACKNOWLEDGMENTSThe authors wish to express their gratitude to the National-A surface-plasmonresonance sensor based on photonic-crystal-fiber with large size microfluidic channels, Opt Appl 42 (2012), 493-501. 4. M.S. Luchansky and R.C. Bailey, High-Q optical sensors for chemical and biological analysis, Anal Chem 84 (2012), 793-821. 5.

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Δ U = B e^{- π c^{2} v^{2} t^{2}}

where B is output voltage amplitude constant, c is antenna constant, and ν is chopper scanning constant.…”

Section: Design Of Imaging Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of passive millimeter wave imaging for concealed weapon detection indoors

Xiang

Yang

2014

Micro & Optical Tech Letters

Self Cite

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“…The rapid growth in data communication and multimedia applications has been driving research on millimeter-wave frequency band high speed communication, such as 60-GHz radio system and over 100-GHz millimeter wave communication system [1][2][3][4][5][6][7]. In order to provide high enough data rate with smaller equipment size and lower price, the demand for high speed integrated circuits (ICs) operating at tens of Gbps remains unremitting.…”

Section: Introductionmentioning

confidence: 99%

A 23-GHZ Bandwidth Automatic Gain Control Amplifier With Wide Dynamic Range for High Speed Communication

Zhang

Xiong²,

Wang

et al. 2013

PIER

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Abstract-In this paper, a wide bandwidth and wide dynamic range AGC amplifier is presented. A push-pull variable gain amplifier (VGA) structure is proposed for wide dynamic rang. Moreover, the bandwidth enhancement technique is used in the post amplifier design to ensure the wide bandwidth and gain of whole circuit. The experimental results demonstrate that the proposed AGC amplifier fabricated in 0.13 µm SiGe BiCMOS process, achieves a 23-GHz bandwidth and 36-dB dynamic rang whereas the power and area consumption are 57.6 mW and 1.9 mm 2 , respectively.

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“…Space agencies are showing a great interest in the development of miniaturized instruments in such a way as to meet the mission constraints imposed by the adoption on micro-and nano-satellites [5]. Millimeter-wave receiver front-ends for radiometric imaging are under development mainly exploiting CMOS SiGe BiCMOS or GaAs PHEMT processes [6][7][8]. However, the cited designs are only focused on ground-based applications such as imaging for security scanners and material analysis.…”

Section: Introductionmentioning

confidence: 99%

SYSTEM-ON-CHIP 36.8 GHZ RADIOMETER FOR SPACE-BASED OBSERVATION OF SOLAR FLARES: FEASIBILITY STUDY IN 0.25 μm SIGE BICMOS TECHNOLOGY

Aluigi¹,

Roselli²,

White³

et al. 2012

PIER

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Abstract-This paper deals with a feasibility study for a System-onChip (SoC) mm-wave radiometer devoted to space-based observation of solar flares and operating in the Ka-band. The radiometer has been designed in 250 nm SiGe BiCMOS process. The circuit integrates a three stages differential LNA with 37.2 dB gain and 4.8 dB noise figure at 36.8 GHz and a differential square-law detector based on HBTs, featuring a 96 mV/µW responsivity. The full radiometer achieves, potentially, a NETD of 0.1 K for 1 s integration time in Dicke mode. This work represents the first study of such an integrated instrument for Ka-band space-based observation of solar flares.

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Signal Model Analysis of a 35ghz Alternating Current Direct Detection Receiver

Cited by 6 publications

References 14 publications

Development of passive millimeter wave imaging for concealed weapon detection indoors

Development of passive millimeter wave imaging for concealed weapon detection indoors

A 23-GHZ Bandwidth Automatic Gain Control Amplifier With Wide Dynamic Range for High Speed Communication

SYSTEM-ON-CHIP 36.8 GHZ RADIOMETER FOR SPACE-BASED OBSERVATION OF SOLAR FLARES: FEASIBILITY STUDY IN 0.25 μm SIGE BICMOS TECHNOLOGY

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