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A printed dual-band dipole filtenna with flexible frequency ratio and improved band-notched performance
摘要： A printed dual-band dipole filtenna with flexible frequency ratio and improved band-notched performance is proposed. It consists of a driven dipole and three parasitic elements. For the driven dipole with short and long arms, a radiation null is found between two passbands, which achieves a band-notched filtering characteristic. Two parasitic elements are introduced to enhance the passband bandwidth and an additional parasitic element is utilized to improve the band-notched performance. In addition, the characteristics of the proposed design including flexible frequency ratio, independent controllable operating frequency, and controllable band-notched bandwidth have also been demonstrated. A filtenna prototype is fabricated and tested. Measured results show that a fractional bandwidth of 21.1% and 18.1% is obtained in the lower and upper passbands, respectively. The measured efficiency is 84% in the lower band and 74% in the upper band but the efficiency sharply decreases to about 13% within the notched band.
关键词： filtenna,band-notched,dipole antenna,dual-band,frequency ratio
更新于2025-09-23 15:23:52
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Planar UWB Monopole Antenna with Tri-Band Rejection Characteristics at 3.5/5.5/8 GHz
摘要： A triple band-notched ultrawide band (UWB) antenna is presented to avoid the interference of services working in the UWB band, such as WLAN, WiMAX and X-band satellite systems. The arc H-shaped slot on the radiating patch creates a low frequency notched band, while the other two band-notched bands are formed by cutting narrow slots on the ground plane. The presented antenna can operate on the ultrawide band efficiently and inhibit interference from three different kinds of narrow band communication systems. The simulation and measurement results show that the antenna has excellent band-notched function on the rejectband and almost omnidirectional radiation pattern on the passband.
关键词： planar monopole antenna,slots,triple band-notched,ultrawide band (UWB) antenna
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP) - Auckland (2018.8.5-2018.8.8)] 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP) - Design of Band-notched UWB Rectangular Dielectric Resonator Antenna
摘要： A rectangular dielectric resonator antenna fed by microstrip line at non-central symmetric position with partial ground plane is presented. The proposed dielectric resonator with given dimensions is easy to excite multiple modes and generate the broadband of 7.09GHz, ranging from 3.89 to 10.98GHz. Due to the introduction of parasitic metal ring, band-notched property can be achieved. When the total length comes to the half a guide wavelength, the notched band at corresponding frequency is generated. Simulations confirm the validation of the design principle. The compact size of the band-notched DRA is 25mm×28mm with 4.037mm thickness.
关键词： rectangular dielectric resonator,UWB,dielectric resonator antenna,band-notched
更新于2025-09-23 15:22:29
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FREQUENCY RECONFIGURABLE TRIPLE BAND-NOTCHED ULTRA-WIDEBAND ANTENNA WITH COMPACT SIZE
摘要： A compact planar recon?gurable triple band-notched UWB Microstrip antenna is proposed in this paper for UWB applications. A band rejection at ITU 8-GHz is generated by inserting an inverted U-shaped metallic strip at the slotted ground plane. Moreover, by cutting two slots on radiating patch, the second rejection at 3.6 GHz for WiMAX and the third rejection at 5.5 GHz for WLAN application are generated. Then, by embedding two (PIN) diodes along the patch slots, switchable dual or single band-notched behavior is added to the antenna performance. The simulated and measured results show that the antenna can operate in a wider bandwidth from 3.1 GHz to 11 GHz, and it has a good omnidirectional radiation pattern with stable gain. Furthermore, the designed antenna has a simple structure and compact size of 20 × 20 mm2. The proposed antenna can use the full potential of UWB frequency range with recon?gurable band-notched behavior at 3.6, 5.5, 8.1 GHz to avoid interference with WiMAX, WLAN, ITU systems respectively.
关键词： WLAN,band-notched,WiMAX,recon?gurable,UWB antenna,ITU
更新于2025-09-23 15:21:01
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[IEEE 2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) - Tbilisi (2018.9.24-2018.9.27)] 2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED) - An UWB Antenna Design Having Band-Reject Characteristic by Y-Shaped Strip
摘要： In this study, a new UWB antenna design that shows the band-notched characteristic for UWB application has been designed. To model the antenna, a Hyperbolic-Perforated (HP) method based on two parasitic patches and a parasitic slot (62) is used. As a result, a frequency response is obtained in the band range of 3.1-10.6 GHz for UWB systems. Based on the results, it further refines the core findings, significance of the research, and suggestions for future studies.
关键词： band-notched characteristic,UWB antenna,Hyperbolic-Perforated method,parasitic patches,parasitic slot
更新于2025-09-19 17:15:36
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UWB MONOPOLE ANTENNA WITH TRIPLE BAND-NOTCHED CHARACTERISTIC BASED ON A PAIR OF NOVEL RESONATORS
摘要： In this paper, a novel microstrip-fed compact antenna with triple band-notched characteristics is presented for ultrawideband (UWB) applications. The antenna consists of a circular radiating patch, a 50 ? microstrip feed line, a partially slotted ground plane, and a pair of modi?ed capacitance loaded loop (MCLL) resonators. The novel resonators are symmetrically located in the vicinity of the feed line to achieve triple band-notched characteristics, such as 3.4–3.7 GHz for WiMAX, 5.15–5.825 GHz for WLAN, 7.25–8.395 GHz for X-band satellite communication. The good performance of triple notched bands, stable gain and omnidirectional radiation patterns in the operating bands make the proposed antenna a good candidate for UWB utilization.
关键词： MCLL resonators,WiMAX,monopole antenna,UWB,WLAN,X-band satellite communication,triple band-notched
更新于2025-09-09 09:28:46
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[IEEE 2018 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) - Nagoya, Japan (2018.8.29-2018.8.31)] 2018 IEEE International Workshop on Electromagnetics:Applications and Student Innovation Competition (iWEM) - A Compact Design of Reconfigurable Dual Band-Notched UWB Antenna
摘要： This paper presents a compact design of UWB antenna with reconfigurable dual notch bands is proposed. The UWB antenna with a notch filter consists of a circular antenna and two-pairs of L-shaped resonators. To realize the notch characteristics in WLAN at 5.2 GHz and 5.8 GHz bands, a half wavelength of L-resonator is introduced in the radiating patch. A small T-shaped notch is etched in the partial ground plane to enhance the UWB bandwidth up to 7.513 GHz, which covers the frequency range from 3.048 - 10.561 GHz. An experimental proposed structure shows a good agreement with the simulated results. Furthermore, the proposed UWB antenna with notch filter has a compact size of 37.6 x 28 mm2. This proposed design can give an alternative solution for eliminating WLAN interferes in the UWB bands by designing the notch filter with a good tuning capability.
关键词： band-notched,resonant frequency,Ultra-wideband (UWB),L-resonator
更新于2025-09-04 15:30:14