Small Square Monopole Antenna for UWB Applications With Variable Frequency Band-Notch Function
TL;DR: In this paper, a printed monopole antenna (PMA) for ultrawideband (UWB) applications with variable frequency band-notch characteristic is presented, which consists of a stepped square radiating patch with two U-shaped slots and a notched ground plane with a T-shaped sleeve that provides a wide usable fractional bandwidth of more than 140%.
Abstract: In this letter, a novel printed monopole antenna (PMA) for ultrawideband (UWB) applications with variable frequency band-notch characteristic is presented. The proposed antenna consists of a stepped square radiating patch with two U-shaped slots and a notched ground plane with a T-shaped sleeve that provides a wide usable fractional bandwidth of more than 140% (2.8516.73 GHz). By cutting two modified U-shaped slots with variable dimensions on the radiating patch, frequency band-stop performance is generated, and we can control its characteristics such as band-notch frequency and its bandwidth. The designed antenna has a small size of 12 times 19 mm2 while showing the band rejection performance in the frequency band of 5.02-5.97 GHz.
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TL;DR: In this article, a printed monopole antenna for ultra wideband applications is proposed, which consists of a square radiating patch with an inverted T-shaped slot and a ground plane with inverted t-shaped conductor-backed plane, which provides a wide usable fractional bandwidth of more than 130% (2.91-14.1 GHz).
Abstract: We present a novel printed monopole antenna for ultra wideband applications. The proposed antenna consists of a square radiating patch with an inverted T-shaped slot and a ground plane with an inverted T-shaped conductor-backed plane, which provides a wide usable fractional bandwidth of more than 130% (2.91-14.1 GHz). By cutting a modified inverted T-shaped slot with variable dimensions on the radiating patch and also by inserting an inverted T-shaped conductor-backed plane, additional resonances are excited and hence much wider impedance bandwidth can be produced, especially at the higher band. The designed antenna has a small size of 12 × 18 mm2 . Simulated and experimental results obtained for this antenna show that it exhibits good radiation behavior within the UWB frequency range.
130 citations
TL;DR: In this paper, the authors proposed a novel printed monopole antenna for ultrawideband applications with dual band-notch function, which consists of a square radiating patch with a pair of L-shaped slits and an E-shaped slot and a ground plane with a V-shaped protruded strip, which provides a wide usable fractional bandwidth of more than 140% (2.89-17.83 GHz).
Abstract: This letter proposes a novel printed monopole antenna for ultrawideband applications with dual band-notch function. The antenna consists of a square radiating patch with a pair of L-shaped slits, and an E-shaped slot and a ground plane with a V-shaped protruded strip, which provides a wide usable fractional bandwidth of more than 140% (2.89-17.83 GHz). In order to generate single band-notch characteristics, we use two L-shaped slits in the radiating patch. By adding an E-shaped slot in the center of the radiating patch, a dual band-notch function is achieved. Also, by inserting a V-shaped protruded in the ground plane, additional resonances are excited, and hence much wider impedance bandwidth can be produced, especially at the higher band. The measured results reveal that the presented dual band-notch monopole antenna offers a very wide bandwidth with two notched bands, covering all the 5.2/5.8-GHz WLAN, 3.5/5.5-GHz WiMAX and 4-GHz C-bands. The designed antenna has a small size area of 10 × 16 mm2, which has a size reduction of 35% with respect to the previous similar antenna.
106 citations
Cites background from "Small Square Monopole Antenna for U..."
...Single and multiple [7] half-wavelength U-shaped to generate the frequency band-notch function, modified planar slits are embedded in the radiation patch to generate the single and multiple band-notched functions, respectively....
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...in the corners of the radiating patch and an E-shaped slot perturb the resonant response and also act as a half-wave resonant structure [5]–[7]....
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TL;DR: In this article, the authors proposed a novel printed monopole antenna with constant gain over a wide bandwidth for ultra wideband applications with desired notch-band characteristic, which consists of a square-ring radiating patch with a pair of T-shaped strips protruded inside the square ring and a coupled Tshaped strip and a ground plane with a protruded strip, which provides a wide us able fractional bandwidth of more than 130% (3.07-14.6 GHz).
Abstract: A novel printed monopole antenna with constant gain over a wide bandwidth for ultra wideband applications with desired notch-band characteristic is presented. The proposed antenna consists of a square-ring radiating patch with a pair of T-shaped strips protruded inside the square ring and a coupled T-shaped strip and a ground plane with a protruded strip, which provides a wide us able fractional bandwidth of more than 130% (3.07-14.6 GHz). By using the square-ring radiating patch with a pair of T-shaped strips protruded inside it, the frequency bandstop performance is generated, and we can control its characteristics such as band-notch frequency and its bandwidth by electromagnetically adjusting coupling between a pair of T-shaped strips protruded inside the square ring. The designed antenna has a small size of 12 × 18 mm2, or about 0.15λ × 0.25λ at 4.2 GHz, while showing the band-rejection performance in the frequency band of 5.05-5.95 GHz.
102 citations
Cites background from "Small Square Monopole Antenna for U..."
...inside the square ring can perturb the resonant response and also acts as a half-wave resonant structure [3]–[5]....
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...than the UWB antennas with band-notched function reported recently [4], [5]....
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...Single and multiple [5] half-wavelength U-shaped slots are embedded in the radiation patch to generate the single and multiple band-notched functions, respectively....
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TL;DR: In this article, the authors proposed a novel printed monopole antenna for ultrawideband applications with dual band-notched function, which consists of a square radiating patch with an inverted T-shaped ring slot, surrounded by a C-shaped slot, providing a wide usable fractional bandwidth of more than 125% (2.71-12.06 GHz).
Abstract: This letter proposes a novel printed monopole antenna for ultrawideband applications with dual band-notched function. The antenna consists of a square radiating patch with an inverted T-shaped ring slot, surrounded by a C-shaped slot, which provides a wide usable fractional bandwidth of more than 125% (2.71-12.06 GHz). In this structure, by cutting an inverted T-shaped slot, the impedance bandwidth is effectively improved at the upper frequency. In order to generate single band-notched characteristics, we use an inverted T-shaped slot, surrounded by a C-shaped slot, in the radiating patch. By adding an inverted T-shaped parasitic structure inside the inverted T-shaped slot on the radiating patch, a dual band-notched function is achieved, and also by inserting this parasitic structure, additional resonance is excited, and hence much wider impedance bandwidth can be produced, especially at the higher band. The measured results reveal that the presented dual band-notch monopole antenna offers a wide bandwidth with two notched bands, covering all the 5.2/5.8-GHz WLAN, 3.5/5.5-GHz WiMAX, and 4-GHz C-bands. The designed antenna has a small size of 12 × 18 × 0.8 mm3.
82 citations
Cites background from "Small Square Monopole Antenna for U..."
...In this letter, the inverted T-shaped slot surrounded by the C-shaped slot in the radiating patch perturbs the resonant response and also acts as a half-wave resonant structure [5]–[7]....
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...On the other hand, in [7]–[9], the designs have complicated structures leading to increased fabrication costs, antenna size, and difficulty in the integration with microwave integrated circuits....
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...04 GHz, which has a frequency bandwidth increment of 13% with respect to the previous similar antenna [7]–[9], and also, the impedance matching at lower frequencies is very well obtained....
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...In [7]–[9], however, the elements were developed on the same layer within the antenna radiator or on the backed side of the layer for generating single-frequency band-notched antennas....
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...Single and multiple [7] half-wavelength U-shaped slits are embedded in the radiating patch to generate the single and multiple band-notched functions, respectively....
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01 Jan 2010
TL;DR: A new concept for the design of a UWB antenna with a bandwidth ranging from 2GHz-11.3GHz is introduced, which satisfies the system requirements for S-DMB, WiBro, WLAN, CMMB and the entire UWB .
Abstract: Since the release by the Federal Communications Commission (FCC) of a bandwidth of 7.5GHz (from 3.1GHz to 10.6GHz) for ultra wideband (UWB) wireless communications, UWB is rapidly advancing as a high data rate wireless communication technology. As is the case in conventional wireless communication systems, an antenna also plays a very crucial role in UWB systems. However, there are more challenges in designing a UWB antenna than a narrow band one. A suitable UWB antenna should be capable of operating over an ultra wide bandwidth as allocated by the FCC. At the same time, satisfactory radiation properties over the entire frequency range are also necessary. This paper focuses on UWB planar printed circuit board (PCB) antenna design and analysis. Studies have been undertaken covering the areas of UWB fundamentals and antenna theory. Extensive investigations were also carried out on the development of UWB antennas from the past to present. First, the planar PCB antenna designs for UWB system is introduced and described. Next, the special design considerations for UWB antennas are summarized. State-of-the-art UWB antennas are also reviewed. Finally, a new concept for the design of a UWB antenna with a bandwidth ranging from 2GHz-11.3GHz is introduced, which satisfies the system requirements for S-DMB, WiBro, WLAN, CMMB and the entire UWB . KeywordsUltra wideband, planar PCB Antenna and bandwidth.
75 citations
References
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Book•
01 Jan 2005
TL;DR: The history of UWB Antennas and their role as Transformers, Radiators, and Transducers, and their place in Systems.
Abstract: Introduction and History of UWB Antennas. Antennas as Transducers. Antennas as Transformers. Antennas as Radiators. Antennas as Energy Converters. Taxonomy of UWB Antennas. Antennas in Systems.
482 citations
"Small Square Monopole Antenna for U..." refers background in this paper
...C OMMERCIAL ultrawideband (UWB) systems require small low-cost antennas with omnidirectional radiation patterns and large bandwidth [1]....
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TL;DR: The planar inverted cone antenna (PICA) as mentioned in this paper provides ultrawideband (UWB) performance with a radiation pattern similar to monopole disk antennas, but is smaller in size.
Abstract: A new antenna, the planar inverted cone antenna (PICA), provides ultrawideband (UWB) performance with a radiation pattern similar to monopole disk antennas , but is smaller in size. Extensive simulations and experiments demonstrate that the PICA antenna provides more than a 10:1 impedance bandwidth (for VSWR<2) and supports a monopole type omnidirectional pattern over 4:1 bandwidth. A second version of the PICA with two circular holes changes the current flow on the metal disk and extends the high end of the operating frequency range, improving the pattern bandwidth to 7:1.
319 citations
"Small Square Monopole Antenna for U..." refers methods in this paper
...imentally characterized [2]–[4], and automatic design methods have been developed to achieve the optimum planar shape [5], [6]....
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TL;DR: In this article, a small microstrip-fed monopole antenna, which consists of a rectangular patch and a truncated ground plane, is presented for ultra wideband application, designed to operate over 3.1 to 11GHz for S/sub 11/<-10dB.
Abstract: A small microstrip-fed monopole antenna, which consists of a rectangular patch and a truncated ground plane, is presented for ultra wideband application. The proposed antenna is designed to operate over 3.1 to 11GHz for S/sub 11/<-10dB. Good return loss and radiation pattern characteristics are obtained in the frequency band of interest.
250 citations
"Small Square Monopole Antenna for U..." refers background in this paper
...Moreover, other strategies to improve the impedance bandwidth that do not involve a modification of the geometry of the planar antenna have been investigated [7], [8]....
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TL;DR: In this article, a novel and compact ultra-wideband (UWB) microstrip-fed monopole antenna having frequency band notch function is presented, where a narrow slit is used to increase the impedance bandwidth of an antenna.
Abstract: A novel and compact ultra-wideband (UWB) microstrip-fed monopole antenna having frequency band notch function is presented. To increase the impedance bandwidth of an antenna, a narrow slit is used. By inserting a modified inverted U-slot on the proposed antenna, the frequency band notch characteristic is obtained. The designed antenna satisfies the voltage standing wave ratio requirement of less than 2.0 in the frequency band between 3 and 11 GHz while showing the band rejection performance in the frequency band of 5.0 to 5.9 GHz.
201 citations
TL;DR: In this paper, a modified microstrip-fed ultrawideband (UWB) planar monopole antenna with variable frequency band-notch characteristic is presented, by inserting two slots in the both sides of microstrip feedline on the ground plane.
Abstract: A novel modified microstrip-fed ultrawideband (UWB) planar monopole antenna with variable frequency band-notch characteristic is presented. By inserting two slots in the both sides of microstrip feedline on the ground plane, much wider impedance bandwidth can be produced. A modified H-shaped conductor-backed plane with variable dimensions is used in order to generate the frequency band-stop performance and control its characteristics such as band-notch frequency and its bandwidth. The designed antenna has a small size of 22 x 22 mm2 and operates over the frequency band between 3.1 and 14 GHz for VSWR < 2 while showing the band rejection performance in the frequency band of 5.1 to 5.9 GHz.
146 citations
"Small Square Monopole Antenna for U..." refers methods in this paper
...to generate the frequency band-notch function, modified planar monopoles with H-shaped conductor-backed plane [9], inverted U-slot [10], and small strip bar [11] are used....
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