Reconfigurable Frequency Discriminator Based on Fractal Delay Line

A new compact reconfigurable frequency measurement device, based on interferometry is presented in this letter. The device combines the advantages of reconfigurability and fractal geometry. The interferometer uses a Wilkinson power divider connected to two microstrip delay lines; one of these corres...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2019-03, Vol.29 (3), p.186-188
Main Authors: Silva, C. P. N., Pinheiro, G. J., de Oliveira, M. R. T., de Oliveira, E. M. F., Llamas-Garro, I., de Melo, M. T.
Format: Article
Language:English
Subjects:
Circuit design
Delay lines
Delays
Fractal based
Fractal geometry
Fractals
Frequency discriminators
Frequency measurement
Inductors
Integrated circuit modeling
interferometer
Microstrip
microstrip line
miniaturization
PIN diode
PIN diodes
reconfigurable
Reconfiguration
Switches
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Summary:A new compact reconfigurable frequency measurement device, based on interferometry is presented in this letter. The device combines the advantages of reconfigurability and fractal geometry. The interferometer uses a Wilkinson power divider connected to two microstrip delay lines; one of these corresponds to the second iteration of the Hilbert fractal curve. PIN diode switches are properly placed in the fractal delay line to achieve a 3-bit circuit, which operates in the 2.7-4.5-GHz range. The design and simulations presented are done using a full-wave electromagnetic simulator, and the frequency responses of the circuit are then shown and compared to measured results.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2019.2892293