Design and Implementation of a High-Sensitivity and Compact-Size IFM Receiver

Rahimpour, Hamid; Masoumi, Nasser

doi:10.1109/tim.2018.2866312

Cited by 9 publications

(7 citation statements)

References 32 publications

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“…Alternative designs of planar IFM devices have been published (e.g. [20], [21], [22], [23], [24]). However, even in the cases where a 2:1 bandwidth factor is reached, the tendency for these prototypes is to use 4-channel (or more) typologies, while the design here described presents the advantage of being a 3-channel device, saving one channel for each Fourier component.…”

Section: Introductionmentioning

confidence: 99%

A High-Sensitivity Fourier Transform Spectrometer for Cosmic Microwave Background Observations

Miguel-Hernández

Hoyland

Renasco

et al. 2020

IEEE Trans. Instrum. Meas.

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The QUIJOTE Experiment was developed to study the polarization in the Cosmic Microwave Background (CMB) over the frequency range of 10-50 GHz. Its first instrument, the Multi Frequency Instrument (MFI), measures in the range 10-20 GHz which coincides with one of the naturally transparent windows in the atmosphere. The Tenerife Microwave Spectrometer (TMS) has been designed to investigate the spectrum between 10-20 GHz in more detail. The MFI bands are 2 GHz wide whereas the TMS bands will be 250 MHz wide covering the complete 10-20 GHz range with one receiver chain and Fourier spectral filter bank. It is expected that the relative calibration between frequency bands will be better known than the MFI channels and that the higher resolution will provide essential information on narrow band interference and features such as ozone. The TMS will study the atmospheric spectra as well as provide key information on the viability of ground-based absolute spectral measurements. Here the novel Fourier transform spectrometer design is described showing its suitability to wide band measurement and √ N advantage over the usual scanning techniques.

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Section: Introductionmentioning

confidence: 99%

A High-Sensitivity Fourier Transform Spectrometer for Cosmic Microwave Background Observations

Miguel-Hernández

Hoyland

Renasco

et al. 2020

IEEE Trans. Instrum. Meas.

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“…In the last six decades, IFM receivers have been used for monitoring broadband signals of electronic support measures (ESM) systems in the air, sea and land and are widely used in electronic warfare (EW) [1], [2], [4]- [7]. Conventional frequency discriminators compare different time delay intervals with a reference time delay to measure the instantaneous frequency of unknown signals.…”

Section: Introductionmentioning

confidence: 99%

“…With this method, the IFM resolution is proportional to the length of the delay lines, related to the frequency discrimination subsystem main elements by bit. The use of open-loop resonators to produce multiband-stop filters is an alternative solution to the use of delay lines, avoiding the reflections and couplings through the meanders and bends commonly used with delay lines to occupy less space [2], [3], [7]. The use of band-stop filters provides more control over the system resolution and further decreases the required simulation time of the whole structure, and additionally provides an output signal similar to the one produced by the use of delay line based interferometers [8].…”

Section: Introductionmentioning

confidence: 99%

“…The focus of previous work is the design and implementation of multiband-stop filters to replace delay line based single interferometers [2], [3], [7]- [9]. This work includes the design and implementation of a fully integrated IFM subsystem based on [3], in this work an added DC section, where RF to DC converters are used in conjunction with an Arduino board for data processing is A Novel Fully Integrated 4-Bit IFM Subsystem Using Band-Stop Filters reported.…”

Section: Introductionmentioning

confidence: 99%

“…The automatic result indication provided by the DC section in this work represents a feature that's not used in previous works [2]- [9]. Figure 1 shows an IFM subsystem using delay lines to implement four interferometers that define the frequency discrimination channels.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Fully Integrated 4-Bit IFM Subsystem Using Band-Stop Filters

Souza

Pontes

et al. 2020

J. Microw. Optoelectron. Electromagn. Appl.

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In this paper a 2-4 GHz microstrip IFM (Instantaneous Frequency Measurement) subsystem that uses Wilkinson power dividers, frequency discriminators based on band-stop filters and a DC arduino section is reported. The device uses band-stop filters as an alternative to delay lines, commonly used for IFM. The resonators are responsible for frequency adjustment, according to half guided wavelength resonator length, and the distance between the transmission line and the resonator. A fully micro-controlled 125 MHz resolution IFM subsystem is designed and tested. Results of the IFM subsystem composed by filters, 4-way power dividers and an Arduino board are described.

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Review of microwave frequency measurement circuits

Silva

Espinosa-Espinosa

Llamas-Garro

et al. 2022

Journal of Electromagnetic Waves and Applications

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In this work, microwave frequency measurement (MFM) is reviewed since the early stages using fully analog implementations, including its evolution to analog/digital implementations with high resolutions up to 1 MHz. The review includes fully digital implementations and microwave photonics techniques, with a discussion on achieved devices and the overall field of measuring and identifying unknown signals. MFM plays a crucial role in electronic warfare, communications, and electronic intelligence systems by identifying the frequency of unknown signals. Several microwave planar devices such as interferometers, filters, and frequency selective surfaces have been proposed to design low-cost and low-power digital MFM systems. The planar devices presented here show resolutions from 1 MHz to 940 MHz and operate in the frequency range from 0.15 GHz to 11.5 GHz, having typical bandwidths from 1 GHz to 2 GHz. MFM using microwave photonics techniques involve mapping the microwave signal into the optical spectrum to create a frequency-power function, that uniquely identifies the frequency of the unknown signal, with large bandwidths and immunity to electromagnetic interference.

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Design and Implementation of a High-Sensitivity and Compact-Size IFM Receiver

Cited by 9 publications

References 32 publications

A High-Sensitivity Fourier Transform Spectrometer for Cosmic Microwave Background Observations

A High-Sensitivity Fourier Transform Spectrometer for Cosmic Microwave Background Observations

A Novel Fully Integrated 4-Bit IFM Subsystem Using Band-Stop Filters

Review of microwave frequency measurement circuits

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