The instantaneous frequency measurement receiver in the complex electromagnetic environment

Gruchala, H.; Czyżewski, M.

doi:10.1109/mikon.2004.1356885

Cited by 20 publications

(11 citation statements)

References 2 publications

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“…One way of measuring the instantaneous frequency to separate the RF signal into two paths, time-delay one, and compare the phases of corresponding quadrature samples [17]. Collections of random instances of such measurements can be histogrammed to extract information on spectral content.…”

Section: Instantaneous Frequency Histogramsmentioning

confidence: 99%

Detecting Signal Structure from Randomly-Sampled Data

Boyle

Haupt

Fudge

et al. 2007

2007 IEEE/SP 14th Workshop on Statistical Signal Processing

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Recent theoretical results in Compressive Sensing (CS) show that sparse (or compressible) signals can be accurately reconstructed from a reduced set of linear measurements in the form of projections onto random vectors. The associated reconstruction consists of a nonlinear optimization that requires knowledge of the actual projection vectors. This work demonstrates that random time samples of a data stream could be used to identify certain signal features, even when no time reference is available. Since random sampling suppresses aliasing, a small (sub-Nyquist) set of samples can represent high-bandwidth signals. Simulations were carried out to explore the utility of such a procedure for detecting and classifying signals of interest.

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Section: Instantaneous Frequency Histogramsmentioning

confidence: 99%

Detecting Signal Structure from Randomly-Sampled Data

Boyle

Haupt

Fudge

et al. 2007

2007 IEEE/SP 14th Workshop on Statistical Signal Processing

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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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“…Traditional IFM devices can be implemented simply in the RF domain using interferometers formed from RF hybrids and RF delay lines [1]. These devices can be somewhat bulky and rely on multi-octave RF componentry which can be difficult to implement.…”

Section: Introductionmentioning

confidence: 99%

Photonic instantaneous frequency measurement using non-linear optical mixing

Sarkhosh

Emami

Bui

et al. 2008

2008 IEEE MTT-S International Microwave Symposium Digest

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Abstract-In this paper we propose and demonstrate a photonically implemented instantaneous frequency measurement system. This system uses two differentially delayed modulated optical carriers that are mixed using a semiconductor optical amplifier. The output of the system includes a DC component that varies as a function of frequency. This can be used for frequency measurement using a low-cost DC photo-detector. Operation is demonstrated from 2-20GHz.

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The instantaneous frequency measurement receiver in the complex electromagnetic environment

Cited by 20 publications

References 2 publications

Detecting Signal Structure from Randomly-Sampled Data

Detecting Signal Structure from Randomly-Sampled Data

A New Low Cost Instantaneous Frequency Measurement System

Photonic instantaneous frequency measurement using non-linear optical mixing

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