Design of A Wave-Absorbing Frequency Selective Surface Unit

Han, Yidan; Zhu, Bang-Cai; Yan, Ze‐Hong

doi:10.1109/csqrwc.2018.8455705

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…In this instance, the lower layer’s selection zone of the symmetrical frequency was below 1.8 GHz, and the wave transmission rate was more than 84%. A wave-absorbing frequency selective surface (AFSS) with low-frequency transmission and high-frequency absorption was proposed by Han et al [ 50 ]. To prevent the frequency selection feature from affecting the microwave absorption effect, the unit uses a method that loads the frequency selection structure proportionally to the absorber’s reflective metal surface.…”

Section: Electromagnetic Circuit Simulation Analysis Of Mosfet-based ...mentioning

confidence: 99%

Testing and Analysis of MOSFET-Based Absorber Integrated Antenna for 5G/WiMAX/WLAN Applications

Omoru

Srivastava

2022

Nanomaterials

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A 3D electromagnetic circuit design and analysis of a MOSFET-based absorber active integrated antenna has been performed. It integrates a transmitting dual-band double material substrate (DMS) cylindrical surrounding patch antenna (CSPA) with a MOSFET-based absorber of reflected radio frequency power. It is a solution to the problem of performance degradation in the power amplifier (PA) resulting from antenna and PA impedance mismatch. This fully integrated MOSFET-based absorber antenna can absorb reflected RF power with a diode-based quasi-circulator as part of the integrated design circuitry. The antenna used for the proposed integrated design will operate at frequencies ranging from 2 GHz to 3 GHz and from 4.6 GHz to 6.1 GHz, thus providing a bandwidth of 1 GHz and 1.5 GHz at a resonance frequency of 2.5 GHz and 5.3 GHz, respectively. This makes it suitable for use in lower and upper bands of WLAN/WiMAX medium RF front-end applications. Furthermore, the condition for MOSFET connected to the absorber (IS ≤ ID and VDS = 0) has been satisfied at both instances of resonance. In this proposed design, an antenna radiation efficiency of 84% has been observed.

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Section: Electromagnetic Circuit Simulation Analysis Of Mosfet-based ...mentioning

confidence: 99%

Testing and Analysis of MOSFET-Based Absorber Integrated Antenna for 5G/WiMAX/WLAN Applications

Omoru

Srivastava

2022

Nanomaterials

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“…In some other studies, the communication band is outside the absorptive band for out-of-band RCSR, and its absorptive/transmissive states are fixed, despite the relative bandwidth being more than 90%. [17][18][19][20][21] A broadband polarization-insensitive tunable rasorber based on AFSS was proposed, 22,23 which can be dynamically tuned from a fully reflected state to an absorptive state in 8.5-18.2 GHz by changing the bias voltage on the PIN diode. The absorber is broadband and reconfigurable, but it is limited to all/nonabsorbing, which does not have the coexistence of two states.…”

Section: Introductionmentioning

confidence: 99%

“…Although it can achieve a broadband RCSR from 1 to 13 GHz, the reduction is only 3 dB on average. In some other studies, the communication band is outside the absorptive band for out‐of‐band RCSR, and its absorptive/transmissive states are fixed, despite the relative bandwidth being more than 90% 17–21 . A broadband polarization‐insensitive tunable rasorber based on AFSS was proposed, 22,23 which can be dynamically tuned from a fully reflected state to an absorptive state in 8.5–18.2 GHz by changing the bias voltage on the PIN diode.…”

Section: Introductionmentioning

confidence: 99%

A broadband reconfigurable rasorber radome based on AFSR for RCS reduction

Xue,

Chen,

et al. 2024

Micro & Optical Tech Letters

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In this paper, a broadband reconfigurable active frequency selective rasorber is proposed, which can be used as a radome for antenna radar cross section (RCS) reduction. By tuning the active components, the radome can achieve in‐band RCS reduction and reconfigurable absorptive/transmissive states. In the absorptive state, the max bandwidth with an absorption rate greater than 90% spanning from 1.62 to 5.37 GHz; in the absorptive/transmissive state, 2.2 GHz is the transmissive frequency with the insertion loss of 93% while absorbing in 0.94–2.06 GHz and 2.63–6.5 GHz, which demonstrate impressive characteristics of broadband and a high absorption rate. Additionally, the radome can maintain performance at ±35° angular incidence and is insensitive to incident wave polarization. Furthermore, it features a lightweight and low‐profile design, with a cell electrical size of just 0.078λ × 0.078λ × 0.066λ. The prototype test shows a noteworthy correlation with simulation. This study has wider applications in the electromagnetic stealth of communication antennas and aircraft, as well as in the control of electromagnetic pollution signals in space.

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