A Wide-Band Passive Equalizer Design Approach for Improving the Gain Flatness With Multiple Peaks

Ran, Xiongbo; Dai, Zhijiang; Li, Mingyu; Cai, Tianfu; Li, Tian

doi:10.1109/tcsii.2021.3110856

Cited by 1 publication

(2 citation statements)

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“…A great many of synthesis methods for passive equalizers have been reported in recent years. [1][2][3][4][5][6] In Ran et al, 1 multistage RLC resonator is used to construct lumped equalizer in transmitter system, and multiple peaks in transmission response are inhibited. In Peng et al, 2 by depositing tantalum nitride (TaN) layer instead of metal layer on the substrate integrated waveguide (SIW), a kind of millimeter wave equalizer is proposed, whose equalizing value is dominated by the surface resistance.…”

Section: Introductionmentioning

confidence: 99%

“…Microwave equalizer, a special device which equipped with linear amplitude response in the passband, is used to smooth fluctuations in wideband applications. A great many of synthesis methods for passive equalizers have been reported in recent years 1–6 . In Ran et al, 1 multistage RLC resonator is used to construct lumped equalizer in transmitter system, and multiple peaks in transmission response are inhibited.…”

Section: Introductionmentioning

confidence: 99%

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Design of low‐pass filter with improved equalization based on lossy grounded spoof surface plasmon polaritons

Wang,

Shi

2024

Micro & Optical Tech Letters

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A new method for designing multifunctional low‐pass filter with controllable equalizing capability is presented in this letter. By constructing the novel unit cell, namely, loading surface mount resistor on the grounded spoof surface plasmon polaritons (SSPPs), the filter not only achieves filtering and equalizing functions at the same time, but also improves the equalizing response in the low‐band effectively. To illustrate the principle, the extraction method of equivalent circuit of the lossy unit cell is introduced, and the equalization and filtering properties characterized by attenuation constant and asymptotic frequency are explored. To verify the concept, a prototype operating from 0.5 to 3.4 GHz with 10 dB equalizing value is implemented, fabricated, and measured. Good agreement is achieved between simulation and measurement. The result shows that the filter is provided with a smooth equalizing curve at the low frequency of the passband compared with the ungrounded SSPPs.

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