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[IEEE 2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT) - Guangzhou, China (2019.5.19-2019.5.22)] 2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT) - A Wideband Substrate Integrated Waveguide Filtering Power Divider
摘要： A wideband substrate integrated waveguide (SIW) filtering power divider (FPD) is presented in this paper. It works in the C band. The FPD used two SIW rectangular cavities and one half-mode substrate integrated waveguide (HMSIW) triangular cavity cascade and centered at 7.5GHz with fractional bandwidth (FBW) of 10.6%.The design parameters of the presented FPD are given and the simulated results are proposed with good expectations. This FPD meets the requirements for miniaturization and integration with other microwave circuits.
关键词： wideband,filtering power divider,fractional bandwidth,substrate integrated waveguide,C band,HMSIW
更新于2025-09-19 17:13:59
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[IEEE 2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) - HangZhou, China (2018.9.5-2018.9.7)] 2018 11th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT) - A Space Harmonic Leaky-Wave Antenna Based on Half Mode Substrate Integrated Waveguide
摘要： A space harmonic leaky-wave antenna based on half mode substrate integrated waveguide (HMSIW) is proposed. This antenna operates in the first negative mode of the guiding structure which is a space harmonic wave using transverse slots. Continuous backward to forward beam scanning is achieved within 25 ± 10 GHz and the highest gain of the antenna can achieve 24.8dBi. The size of the antenna is half of the HMSIW antenna.
关键词： half mode substrate integrated waveguide (HMSIW),space harmonics,leaky-wave antenna
更新于2025-09-19 17:13:59
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Compact Equal-Width Equal-Length Phase Shifter With Slow-Wave Half-Mode Substrate Integrated Waveguide for 5G Applications
摘要： The emerging fifth-generation (5G) wireless and mobile communications demand high-performance phase shifters to enable the multi-channel transmit/receive systems with phase control ability. In this work, a size-miniaturized wideband phase shifter based on slow-wave half-mode substrate integrated waveguide (SW-HMSIW) is presented. The proposed SW-HMSIW is consisting of conventional HMSIW section and periodically-patterned non-uniform microtrip polyline unit cells. Patterning polyline unit cells in HMSIW can effectively enhance the product of the equivalent permittivity and permeability of SW-HMSIW, so that the slow-wave effect can be exhibited and its associated size reduction will be further achieved. Moreover, lengths and widths of segments of the proposed polyline unit cell can influence the equivalent permittivity and permeability of the SW-HMSIW, and consequently change its phase constant and cutoff frequency. Hence, for a SW-HMSIW with a fixed physical length, an electrical length variation, i.e, phase shift, can be achieved as segments of the polyline employ various lengths or widths. Based on this principle, a wideband equal-width equal-length SW-HMSIW phase shifter is implemented. Measured results are in good agreement with simulated ones, with a phase shift of 90.5 ± 3 degree and a fractional bandwidth of 43.0% achieved. Compared with some similar reported works, the proposed one shows a size reduction more than 80% as well as good magnitude and phase deviations performance. Moreover, its miniaturized size and equal-width equal-length structure make it suitable for the complex multi-channel modules and networks of the 5G applications.
关键词： slow-wave structure,phase shifter,Effective medium approximation,size miniaturization,half-mode substrate integrated waveguide (HMSIW)
更新于2025-09-16 10:30:52
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Continuously tunable crossover based on HMSIW
摘要： A frequency-tuning crossover based on half-mode substrate-integrated waveguide (HMSIW) is presented for the ?rst time. Two HMSIW transmission lines are parallelly arranged to form the four-port crossover. Three tunable capacitors placed between the HMSIW transmission lines are used to obtain the tunable passband. For veri?cation, both simulated and measured results are given and good agreement between the simulation and measurement is observed. The measured passband can be tuned in a frequency range from 2.2 to 5.0 GHz (tuning range of 78%) with better than 19 dB return loss and 15 dB isolation, while the insertion loss varies from 0.93 to 1.97 dB.
关键词： half-mode substrate-integrated waveguide,frequency-tuning crossover,tunable passband,HMSIW
更新于2025-09-10 09:29:36
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - Reconfigurable Half-Mode Substrate-Integrated Cavity Antenna Arrays
摘要： A frequency-recon?gurable array of HMSIW cavity antennas is presented in this paper. The tuning of the frequency is controlled using stub-loaded varactors. The feeding network can be designed so that the antenna either operates with omni-directional or broadside patterns. Two antenna arrays have been designed demonstrating a frequency tuning range of about 27% from 3.05 GHz to 4.0 GHz. The overall simulated ef?ciency, including the feeding network, is better than 56% for the omni-directional antenna and 42% for the broadside antenna.
关键词： frequency-recon?gurable antenna,pattern-recon?gurable antenna,Half-mode substrate-integrated waveguide (HMSIW),recon?gurable antenna
更新于2025-09-04 15:30:14
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A COMPACT TRIPLE-MODE BANDPASS HMSIW FILTER
摘要： A simple method for designing a triple-mode bandpass ?lter is presented in this paper. Triple-mode is achieved by using half-mode substrate integrated waveguide (HMSIW) cavity. Three perturbation metal vias were introduced for shifting resonant modes. The resonant frequencies of these modes can be adjusted by the location and the diameter of perturbation vias properly. In order to improve the out-of-band rejection, the CPW-to-SIW transition was added. A triple-mode HMSIW ?lter with the center frequency of 13 GHz was designed and fabricated. The measured fractional bandwidth is 35% with a transmission zero located at 20.4 GHz. Good agreement is observed between simulation and measurement.
关键词： perturbation vias,triple-mode bandpass filter,HMSIW,CPW-to-SIW transition
更新于2025-09-04 15:30:14