Superconductive digital instantaneous frequency-measurement subsystem

Liang, Gang; Shih, Ching‐Long; Withers, R.S.; Cole, Ben; Johansson, M.E.; Suppan, L. P.

doi:10.1109/mwsym.1993.276733

Cited by 11 publications

(12 citation statements)

References 3 publications

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“…Limiting amplifiers basically provide a constant RF power signal at their output even if the input power fluctuates over a wide dynamic range. In fact, they are commonly employed in electronic-based IFM receivers [3]. With an auxiliary limiting amplifier, the system could be optimized in such a way that the output RF power of the amplifier would be near the optimum working point of the photonic IFM system, thus minimizing error degradation over a wider dynamic range.…”

Section: B Combined Impact Of Parameters In System Performancementioning

confidence: 99%

“…These stringent requirements are typically met by means of dedicated instantaneous frequency measurement (IFM) subsystems [3], [4]. Thanks to their special architecture, which usually combines a sophisticated mix of high-speed digital and analog electronics, IFM receivers can be used to estimate a wide range of RF pulse parameters with sub-microsecond response times, including: Center frequency (f RF ), pulse width (PW), pulse amplitude (PA) and pulse repetition frequency (PRF).…”

mentioning

confidence: 99%

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Analysis of System Imperfections in a Photonics-Assisted Instantaneous Frequency Measurement Receiver Based on a Dual-Sideband Suppressed-Carrier Modulation

Fandiño

Muñoz

2015

J. Lightwave Technol.

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Abstract-Instantaneous frequency measurement receivers are a well-established technology that is used for the ultrafast characterization of pulsed microwave signals over a broad bandwidth. Recently, numerous photonic approaches to instantaneous frequency measurement (IFM) have been proposed and experimentally demonstrated, with the ultimate aim of leveraging the benefits of optical technology to improve the performance of already existent electronic solutions. Despite the numerous results, not so much attention has been paid so far to understand the subtle implications that system imperfections can have on realistic photonics-based IFM receivers. Here, we focus our attention in one of the most promising among these IFM techniques, which is based in optical power monitoring of a dual-sideband suppressedcarrier modulation after a Mach-Zehnder interferometer (MZI) filter. We develop a time domain model for the rigorous analysis of all major optical and electrical effects, including amplitude imbalance and phase errors in the modulator and the MZI, as well as on-pulse RF phase/frequency modulation. Simulations are then used to illustrate the substantial effect that a non-perfectly suppressed optical carrier can have on system performance. More importantly, it is shown that in a non-ideal situation the system amplitude comparison function critically depends with input RF power, thus greatly limiting the dynamic range of the photonicsbased receiver. Some approaches to solve these issues are also discussed.

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Section: B Combined Impact Of Parameters In System Performancementioning

confidence: 99%

mentioning

confidence: 99%

Analysis of System Imperfections in a Photonics-Assisted Instantaneous Frequency Measurement Receiver Based on a Dual-Sideband Suppressed-Carrier Modulation

Fandiño

Muñoz

2015

J. Lightwave Technol.

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“…These components often rely on travelling wave RF components and high-speed electronic mixers [1,2] which may be large and heave and are also sensitive to electronic attack.…”

Section: Ifmmentioning

confidence: 99%

Microwave photonic instantaneous frequency measurement with simultaneous parallel operation within a single optical fiber

Sarkhosh

Emami

Bui

et al. 2010

2010 IEEE MTT-S International Microwave Symposium

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A Microwave photonic system which simultaneously implements multiple parallel IFMs within a single optical fiber is proposed and practically demonstrated. Three optical carriers of different wavelength are modulated by the same RF signal and then differentially delayed. All three carriers are then mixed in a highly nonlinear optical fiber. The mixing products are separated and the optical power of each can be related to the input RF frequency. We demonstrate simultaneous acquisition of two distinct frequency measurement responses over the range from 2-40GHz. This system is all-optical and requires no high-speed electronic components. Avenues for extending the number of simultaneous channels are identified.

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“…Their role is to determine the carrier frequency of the incoming RF signal over a wide band of frequencies [1,2]. A conventional IFM system divides the incoming signal into two signals and delays one of them with respect to the other using a delay line with a specified length, then the phase difference between the delayed and non-delayed signal is measured and utilized to extract the frequency value.…”

Section: Introductionmentioning

confidence: 99%

A New Low Cost Instantaneous Frequency Measurement System

Badran¹,

Deeb²

2017

PIER M

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Abstract-A new low cost method for implementing an Instantaneous Frequency Measurement (IFM) system is presented in this paper. The proposed method is based on dividing the incoming RF signal into four signals and filtering each one by an appropriate band-pass filter. The frequency is then estimated from the power level of the filtered signals. A closed form for the Standard Deviation (STD) and the bias of the frequency estimator is derived. A design example for an IFM system with a working frequency band of 2 to 4 GHz is presented with simulated and measured results. The design is implemented on a commercial FR4 (DE104) substrate using printed circuit board technology. Experiments in a laboratory show a maximum error of about 15 MHz in estimating the frequency value.

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Superconductive digital instantaneous frequency-measurement subsystem

Cited by 11 publications

References 3 publications

Analysis of System Imperfections in a Photonics-Assisted Instantaneous Frequency Measurement Receiver Based on a Dual-Sideband Suppressed-Carrier Modulation

Analysis of System Imperfections in a Photonics-Assisted Instantaneous Frequency Measurement Receiver Based on a Dual-Sideband Suppressed-Carrier Modulation

Microwave photonic instantaneous frequency measurement with simultaneous parallel operation within a single optical fiber

A New Low Cost Instantaneous Frequency Measurement System

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