Wideband substrate integrated waveguide power splitter with high isolation

2010 ◽  
Vol 4 (7) ◽  
pp. 817 ◽  
Author(s):  
K. Sarhadi ◽  
M. Shahabadi
Keyword(s):  
Substrate Integrated Waveguide ◽  
Power Splitter ◽  
High Isolation

High-isolation diplexer based on dual-mode substrate integrated waveguide resonator

2019 ◽  
Vol 12 (4) ◽  
pp. 288-292
Author(s):  
Kaijun Song ◽  
Mou Luo ◽  
Cuilin Zhong ◽  
Yuxuan Chen
Keyword(s):  
Fourth Order ◽  
Equivalent Circuits ◽  
Substrate Integrated Waveguide ◽  
Waveguide Resonator ◽  
Dual Mode ◽  
Third Order ◽  
High Isolation ◽  
Operating Modes ◽  
Mode Resonator

AbstractA high-isolation diplexer based on a dual-mode substrate integrated waveguide (SIW) resonator is proposed in this paper. Based on the theory of the dual-mode resonator, the miniaturized diplexers are designed by using the SIW dual-mode resonators. The superior isolation of the diplexers is obtained because the two operating modes of the dual-mode SIW resonators are not directly coupled and there is no interference with each other. In order to further improve the isolation of the circuit, the number of the order of the diplexer is added. Equivalent circuits are given to analyze and design the dual-mode high-isolation diplexers. Detailed analyses are given according to the equivalent circuits. The dual-mode third-order and fourth-order diplexers are designed and fabricated. The measured results agree well with the simulated ones. The total sizes of the fabricated third-order and fourth-order diplexers are 1.78λg × 2.64λg and 1.79λg × 3.63λg, respectively.

High isolation sub-harmonic up-converter using substrate integrated waveguide

2005 ◽  
Vol 41 (22) ◽  
pp. 1225 ◽  
Author(s):  
J.-X. Chen ◽  
W. Hong ◽  
Z.-C. Hao ◽  
H.-J. Tang ◽  
K. Wu
Keyword(s):  
Substrate Integrated Waveguide ◽  
High Isolation

Design and Experimental Validation of Miniaturized Self-Triplexing Antenna Employing HMSIW

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ayman A. Althuwayb
Keyword(s):  
Experimental Verification ◽  
Experimental Validation ◽  
Substrate Integrated Waveguide ◽  
Cross Polarization ◽  
Frequency Bands ◽  
High Isolation ◽  
Operating Band

Abstract The design and experimental verification of miniaturized cavity-backed self-triplexing antenna (STA) with high-isolation employing half-mode substrate integrated waveguide (HMSIW) are presented in this work. The proposed STA is constructed by using HMSIW, an Y-shaped slot and three 50Ω feed lines. Three unequal radiating patches are generated by engraving an Y-shaped slot on the top surface of the HMSIW cavity to operate at 3.7/5.0/5.8 GHz for WiMAX/WLAN applications. The proposed STA allows to realize one of the operating band independently by keeping other operating band unaltered and vice-versa. The circuit area of STA is highly miniaturized due to the use of HMSIW cavity and loading of Y-shaped slot. The isolations between three ports are greater than 31 dB. The fabricated STA provides 5.5, 5.92 and 5.93 dBi peak gains at 3.7, 5.0 and 5.8 GHz, respectively. The efficiency of the STA is greater than 92% at all the frequency bands. The constructed STA has a front-to-back ratio of more than 23 dB and a separation of more than 21 dB between co-to-cross polarization levels. Fabrication and measurement are used to validate the intended STA.

Ultra-compact self-diplexing antenna based on quarter-mode substrate integrated waveguide with high isolation

2021 ◽  
pp. 1-6
Author(s):  
Ayman A. Althuwayb
Keyword(s):  
Frequency Band ◽  
Long Term Evolution ◽  
Substrate Integrated Waveguide ◽  
Cross Polarization ◽  
Cavity Resonators ◽  
Frequency Bands ◽  
High Isolation ◽  
Term Evolution ◽  
Better Than

Abstract This article presents the design of an ultra-compact cavity-backed self-diplexing antenna with high isolation employing quarter-mode substrate integrated waveguide (QMSIW). The proposed antenna is constructed by using QMSIW, slot, and two 50Ω feed lines. Two eighth-mode cavity resonators are designed by inserting a slot on the top side of the rectangular substrate integrated waveguide to operate at 2.6 and 4.9 GHz for long-term evolution and public safety band applications, respectively. The proposed design allows to tune any frequency band independently by keeping other bands unaltered. The size of antenna is ultra-compact, due to the use of QMSIW cavity. The isolation between two ports is >35 dB. The antenna achieves 5.34 and 5.68 dBi peak gains at 2.6 and 4.9 GHz, respectively. The efficiency of the antenna is >85% at both frequency bands. The antenna provides more than 20.9 dB front-to-back-ratio and better than 21 dB separation between co-to-cross polarization levels. The designed antenna is validated through fabrication and measurement.

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