Instantaneous Frequency Measurement Receiver Performance Analysis for AM, FM Signals

Kondakov, Dmitrii; Lavrov, A. P.

doi:10.1007/978-3-319-23126-6_54

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…Microwave frequency discriminators (MFD) and microwave phase discriminators (MPhD) are the fundamental elements of instantaneous frequency measurement (IFM) systems [1][2][3][4][5][6][7][8][9][10]. Moreover, MFDs and MPhDs are attractive for phase noise measurements of microwave oscillators [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…These types of instruments, i.e., SFMFD, can be used in cases when the accuracy of a frequency measurement is not a main requirement, 2 of 16 but their small size plays a particularly significant role. High measurement resolution and accuracy are the parameters that characterize the so-called quadrature microwave frequency discriminators (QMFD) [1][2][3][4][5][7][8][9][10]14]. The QMFDs may contain, depending on the implementation, several microwave splitters and at least two vector summation devices or mixers.…”

Section: Introductionmentioning

confidence: 99%

“…In [1,5], a quadrature microwave frequency discriminator consisting of two power dividers and three 3 dB/90 • directional couplers was presented. The quadrature frequency discriminator shown in [4] consists of three 3 dB/90 • directional couplers, one 3 dB/180 • directional coupler and one power divider. Research is currently underway to improve constructions of MFD.…”

Section: Introductionmentioning

confidence: 99%

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2.45 GHz Band Quadrature Microwave Frequency Discriminators with Integrated Correlators Based on Power Dividers and Rat-Race Hybrids

Rutkowski

Stadnik

2021

Electronics

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Instantaneous frequency measurement devices are useful for conducting extremely fast measurements of the current frequency value of microwave signals, even if their duration is extremely short. This paper presents the principle of determination of temporary values of the microwave signal phase and frequency using interferometer techniques, based on passive microwave components. Additionally, the structures and results of measurements of two novel versions of integrated microwave correlators for microwave frequency discriminators, made on a single printed circuit board, are shown. Three Wilkinson-type, single-stage power dividers, and two rat-race hybrids create the developed correlators. The developed devices were designed to work over a wide frequency range, i.e., of 1.6–3.1 GHz, and can be used to monitor Wi-Fi devices as well as pulse and CW radar systems operating in the S band. They can also be applied in passive radars and active Doppler radars. The view of the printed circuits boards and results of measurements are presented. Recommendations for improving the accuracy of measurement are proposed.

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