A Compact Substrate Integrated Self-Diplexing Antenna for WiFi and ISM Band Applications

Dash, Sounik Kiran Kumar; Cheng, Qingsha S.; Barik, Rusan Kumar; Pradhan, Nrusingha Charan; Karthikeyan, S. S.

doi:10.23919/eumc48046.2021.9337976

Cited by 2 publications

(1 citation statement)

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“…High isolation and low FR are important specifications for radio-frequency identification, radar, and satellite applications. SIW multiband antennas such as selfdiplexers [1][2][3][4][5][6] and self-triplexers [7][8][9][10] have been proposed in the literature which achieved a low FR (f 2 /f 1 = 1.03) and (f 3 /f 1 = 1.18), respectively. However, the design of self-quadplexer antennas for quad-band operation with low FR (f 4 /f 1 ) is difficult, and maintaining port isolation becomes more challenging as the number of ports increases.…”

Section: Introductionmentioning

confidence: 99%

Self‐isolated quadruplexing SIW antenna with extremely low frequency ratio for C‐band applications

V.,

2024

Micro & Optical Tech Letters

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In this letter, an substrate integrated waveguide ‐based self‐quadplexing antenna based on a modified Jerusalem cross‐shaped slot is presented. By introducing different lengths of the slots of Jerusalem cross, the antenna operates at four different closely spaced resonant frequencies 4.08, 4.37, 4.61, and 4.97 GHz. The proposed quadplexer antenna achieved a minimum port isolation of 20 dB between any two ports with an extremely low frequency ratio of 1.2. The quadplexer antenna has unidirectional radiation pattern and independent frequency tunability characteristics with a gain of 6.88, 6.51, 7.03, and 7.12 dBi, at corresponding resonant frequencies and a compact size of 0.142, where 0 is the free space wavelength at the lowest resonant frequency. The proposed antenna is suitable for C‐band multiplexing applications.

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