A One-GHz Ferroelectric Limiter

Horton, J.B.; Donaldson, M.R.

doi:10.1109/tmtt.1967.1126522

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…The nonlinear behavior of ferroelectrics has been described for several years, and the new material technologies admit them to stand out. Firstly, in [23], frequency selectivity is demonstrated by using a ferroelectric material. Still, the ferrite devices disadvantage was reported, consisting of a necessarily strong biasing DC magnetic field to perform tunability.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Three Functional Dimension Single and Dual-Band SDR Front-Ends Using Thin Film BST-Based Varactors

et al. 2022

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This paper presents a performance evaluation of single and dual-band software-defined radio (SDR) front-ends using commercially available barium strontium titanate (BST) thin film to control SDR receivers dynamic range and mitigate interference. Firstly, an SDR front-end solution using a BST-based single-band bandpass filter (BPF) is developed to manage in-band attenuation according to the input power. Secondly, a dual-band SDR front-end to avoid high power interference with its spectral content on the below side of the second band is designed. This device is performed with a BST-based dual-band BPF providing independent control of the power limiting capabilities of the first and second bands. The BST component introduces a dependence on bias voltage, frequency, and input power. Consequently, by applying a 0 V bias, it is possible to target interferers between 700 MHz up to 1 GHz and attenuate them more than 7 dB at 40 dBm. The frequency dependence is defined by the second band, which retains its filtering performance while performing interference cancellation in the first band. This SDR solution implements a three functional dimension device in the upper MHz with a power-dependent insertion loss, high threshold power level, and frequency selectivity.INDEX TERMS dual-band bandpass filters, ferroelectric devices, frequency selectivity, intermodulation distortion, nonlinear measurements, power limiters, SDR front-ends, three functional dimension devices, tunable microwave filters.

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Section: Introductionmentioning

confidence: 99%

Reconfigurable Three Functional Dimension Single and Dual-Band SDR Front-Ends Using Thin Film BST-Based Varactors

et al. 2022

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“…The nonlinear effects of dielectric tunability by the microwave signal power can be useful for circuits such as microwave limiters and signal to noise enhancers. A 1 GHz ferroelectric passive limiter was demonstrated in the past, using the dielectric tunability of a bulk ferroelectric material by the RF electric field [5]. In this research, a circuit is designed by combining the ferroelectric varactor shunt switches and a quarter-wavelength transmission line resonator used as a shunt load.…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of RF power sensitivity of ferroelectric varactor shunt switches

Subramanyam

Biggers

Neidhard

et al. 2007

2007 IEEE Antennas and Propagation Society International Symposium

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Ferroelectric varactors placed in a resonant circuit to study the RF power level dependence. At zero-bias, and low microwave power levels, the high capacitance of the varactor results in the resonance of the shunted transmission line, attenuating the signal. At higher power level, the ferroelectric varactor capacitance is reduced by the rf signal, detuning the resonance in the shunted stub, and reduces the attenuation level for the signal. The experimental power transfer curve clearly showed that the RF power dependence of the varactor is detectable.Index Terms -ferroelectric thin-films, ferroelectric varactor, varactor shunt switches, RF power dependence.

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Ferroelectric Devices

Gevorgian¹,

Deleniv²

2009

Engineering Materials and Processes

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A One-GHz Ferroelectric Limiter

Cited by 10 publications

References 5 publications

Reconfigurable Three Functional Dimension Single and Dual-Band SDR Front-Ends Using Thin Film BST-Based Varactors

Reconfigurable Three Functional Dimension Single and Dual-Band SDR Front-Ends Using Thin Film BST-Based Varactors

Experimental verification of RF power sensitivity of ferroelectric varactor shunt switches

Ferroelectric Devices

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