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[IEEE 2018 International Conference on Electromagnetics in Advanced Applications (ICEAA) - Cartagena des Indias, Colombia (2018.9.10-2018.9.14)] 2018 International Conference on Electromagnetics in Advanced Applications (ICEAA) - Antenna Integrated With a Microstrip Filter for 5G Mm-wave Applications
摘要： In this work, a filtering mm-wave antenna array is proposed for the future 5G mobile devices. The filtering antenna design is based on the fourth-order coupled line planar filter with a metal lid added in order to increase the filter sharpness and decrease loss. In this paper, the metal lid is modified so the slot antenna is formed at the end of the filter. Finally, the proposed antenna element is combined into a linear phased array on the short edge of the typical mobile ground plane.
关键词： mm-wave,antenna array,filtering antenna,mobile devices,5G
更新于2025-09-23 15:21:21
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Filtering two-element waveguide antenna array based on solely resonators
摘要： This paper presents a design approach of a filtering antenna arrays based on the coupling matrix theory. The approach generates filtering functionality using the resonating array radiating elements and the resonator based feed network regardless to the physical structure. To implement the approach, a novel topology for a two-element array is presented, here three rectangular waveguide cavity resonators have been employed to form the filtering array. The array has a fractional bandwidth of 10% at the centre frequency 10 GHz with a reflection coefficient magnitude within the passband of 20 dB. The realised gain over the passband is 9.8 ± 0.4 dBi. The array has been fabricated and the measurements are in very good agreement with the simulations, validating the approach.
关键词： antenna array,filtering antenna array,coupling matrix,waveguide resonators
更新于2025-09-23 15:21:01
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A NOVEL RECONFIGURABLE UWB FILTERING-ANTENNA WITH DUAL SHARP BAND NOTCHES USING DOUBLE SPLIT RING RESONATORS
摘要： This study presents a novel technique for designing an ultra-wideband (UWB) filtering-antenna with dual sharp band notches. This design is composed of a modified monopole antenna integrated with resonant structures. The monopole antenna is modified using microstrip transition between the feedline and the patch. In addition, block with a triangle-shaped slot is loaded on each side of the ordinary circular patch to produce wide bandwidth with better return loss and higher frequency skirt selectivity. The resonant structures are constructed using two double split ring resonators (DSRR) loaded above the ground plane of the antenna to produce dual band notches and filter out WiMAX (3.3–3.7 GHz) and HiperLAN2 (5.4–5.7 GHz) frequencies. The band notch position is controlled by varying the length of the DSRR. The reconfigurability feature is achieved by using two PIN diode switches employed in the two DSRR. The measured results show that the proposed filtering-antenna provides wide impedance bandwidth from 2.58 to 15.5 GHz with controllable dual sharp band notches for WiMAX and HiperLAN, peak realized gain of 4.96 dB and omnidirectional radiation pattern.
关键词： double split ring resonators (DSRR),dual sharp band notches,filtering-antenna,PIN diode switches,WiMAX,HiperLAN2,Ultra-wideband (UWB)
更新于2025-09-10 09:29:36
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Broadband Circularly Polarized Filtering Antennas
摘要： This paper consists of two parts. The first part presents a review of the recent development in broadband circularly polarized filtering antennas. The second part presents a novel design of broadband integrated filtering antenna based on eighth-mode SIW (EMSIW) resonators for rectenna applications. This work has three main novel contributions: (i) By adjusting the external quality factors and coupling coefficients of the resonators in this filtering antenna, optimum input impedance with a complex value can be realized within the filtering antenna. Thus there is no need for an external impedance matching network, which is usually required between the antenna and the rectifying circuits; (ii) Compared with traditional microstrip resonators, high-Q EMSIW cavities are used to increase antenna gain; (iii) The coupling gap between the EMSIW resonators also acts as the feeding structure of the radiator. So the feeding structures are all on the middle layer. The ground plane on the back side is a complete structure without any defects. This novel structure design improves front-to-back ratio to enhance the antenna receiving efficiency. To validate this method, two C-band circularly polarized integrated filtering antennas with an input impedance of 50 Ω and complex impedance are designed, simulated and fabricated. The measured results show that the operating frequency bandwidth of the proposed antennas is more than 14.5% at C band with the gain above 8 dBi. The 3 dB Axial Ratio (AR) bandwidth is larger than 8.5% and the front-to-back ratio is higher than 18 dB. Moreover, the proposed antenna with complex impedance is conjugate matched with the input impedance of a specific rectifying circuit at 5.8 GHz and harmonics suppression at the 2nd harmonic frequency is achieved.
关键词： filtering antenna,Broadband antenna,circularly polarized antenna,impedance match,rectenna
更新于2025-09-09 09:28:46
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A wideband omnidirectional filtering patch antenna with high selectivity
摘要： A wideband omnidirectional filtering patch antenna with high selectivity is proposed in this article. The annular ring is surrounded by the hexagonal patch with inner circle, whereas a series of shorting vias are regularly distributed among them and a copper top hat is suspended right on the top of the radiator, respectively. And, omnidirectional pattern is mainly performed on account of the symmetry and center-fed structure. In addition, broadband performance is achieved by merging three resonant modes, which include the TM01 and TM02 modes of the annular ring and the TM02 mode of the hexagonal patch with inner circle. Taking advantages of the hexagonal patch and six shorting vias in it, two radiation nulls are provided in the upper band. Besides, another radiation null is generated in the lower band by reason of the top hat and other shorting vias. As a result, an ideal quasi-elliptic bandpass response, high selectivity, and good out-of-band rejection are obtained simultaneously. The proposed filtering patch antenna, with a profile of 0.056 λ0, shows a wide impedance bandwidth of 30.2% from 2.05 to 2.78 GHz. The average gain in the passband is about 6.5 dBi, and the out-of-band suppression level is greater than 15 dB in the wide stopband.
关键词： filtering antenna,wideband,high selectivity,omnidirectional antenna
更新于2025-09-04 15:30:14
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A high‐selectivity dual‐polarization filtering antenna with metamaterial for 5G application
摘要： A high-selectivity dual-polarization filtering antenna with metamaterial is presented in this letter. The multilayer coupled radiation structure of the antenna determines a filtering function. With the metamaterial layer designed above the antenna, a sharp roll-off rate at high pass band edge and a better out-of-band rejection occurs, thus a better high selective filtering characteristic can be achieved. Simulating the impedance bandwidth and measuring the antenna, (VSWR <2) of the antenna is from 3.25 GHz to 3.85 GHz; meanwhile, the maximum gain can reach 9dBi. The gain of antenna can quickly decrease 43dBi at the high pass band edge from 3.85 GHz to 4.05 GHz and the antenna has an out-of-band rejection level of 27dBi from 4.05 GHz to 5 GHz. The tested results verify our designs and the antenna could be a good candidate for the 5G anti-interference wireless terminal communication system.
关键词： high selectivity,metamaterial,filtering antenna,out-of-band rejection,dual polarization
更新于2025-09-04 15:30:14