Harmonic-less Annular Slot Antenna (ASA) using a novel PBG structure for slot-line printed devices

Boisbouvier, Nicolas; Bolzer, F. Le; Louzir, Ali; Tarot, Anne-Claude; Mahdjoubi, Kouroch

doi:10.1109/aps.2003.1219297

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…In fact, the insertion of the DGS units into the antenna interrupts the direct path of the current and contributes to lengthen the electrical path and thus the lower frequency shifts down. Similar behavior has been also reported in other studies [16, 17]. The total size of the antenna‐filter is 66×73 mm 2 = 0.44×0.48 λ 0 2 , where λ 0 is the free‐space wavelength at 2 GHz.…”

Section: Co‐design Antenna‐filtersupporting

confidence: 86%

Compact wideband harmonic suppressed antenna using non‐uniform cascaded defected ground structure

Damaj¹,

Lepage²,

Begaud³

2013

Micro & Optical Tech Letters

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both E-plane and H-plane which is by far the standard. The bandwidth covers 2. 365-2.475 GHz at À10 dB return loss condition. CONCLUSIONThe development and performance of a 2 by 4 element linear polarization suspended microstrip patch antenna array is described. The array design is based on a low cross-polarization suppression technique. The analysis of cross-polarization suppression techniques in linear arrays reveals that, even though some particular structures can cancel these fields efficiently, the geometrical composition of the entire array affects the SLLs. This work presents a novel technique. Using this technique the cross-polarization level on the array is significantly suppressed compared to the cross-polarization level of the basic radiating element and no undesired side lobes occur in the radiation pattern of the array. ACKNOWLEDGMENTSThis work was supported by SEMCAD X by SPEAG. www.speag.com ABSTRACT: This article presents a coplanar waveguide-fed wideband bowtie antenna with harmonic suppression using non-uniform cascaded defected ground structure units. The antenna operates between 2 GHz and 5.4 GHz and harmonics are effectively reduced. Its size is only 0.44Â0.48 k 0 2 , k 0 being the free-space wavelength at 2 GHz. Simulation and measurement agree very well. V C 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:829-835, 2013; View this article online at wileyonlinelibrary.com.ABSTRACT: A broadband left-handed (LH) waveguide operating above the cutoff frequency is presented. The unit cell consists of oneshorted stub and two-twisted posts. The structure induces double loops in the surface currents, resulting in enhanced inductance which broadens the negative permeability region. To analyze the LH properties of the structure, a 2-port network cross-connected equivalent circuit is derived. The measured results of the LH waveguide constructed with five unit cells in an X-band are in good agreement with simulated data and show a good transmission property as well as a broad LH fractional bandwidth of 26.5%. V C 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:835-840, 2013; View this article online at wileyonlinelibrary.com.

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Section: Co‐design Antenna‐filtersupporting

confidence: 86%

Compact wideband harmonic suppressed antenna using non‐uniform cascaded defected ground structure

Damaj¹,

Lepage²,

Begaud³

2013

Micro & Optical Tech Letters

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“…These structures which have some specific characteristics such as ability to suppression of surface waves, improving the radiation performance, and reducing the size of antenna are very attractive to use. In addition, they have been utilized in some papers [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The same figure can also be applied for the second design except for the circular PBG structures on the substrate. In [6], a PBG structure has been used to control harmonic frequencies of annular slot antennas and some formulas have been suggested for decreasing the level of these harmonic frequencies. During our researches we have distinguished that some restrictions exist in determining the number of PBG structures.…”

Section: Introductionmentioning

confidence: 99%

Two Novel Compact Triple-Band Microstrip Annular-Ring Slot Antenna for PCS-1900 and Wlan Applications

Sabri¹,

Atlasbaf²

2008

PIER Letters

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Abstract-This paper presents two compact ring slot antennas which are suitable for the PCS-1900 and the 2.4/5-GHz triple-band operations. The first antenna consists of three annular ring slots. The outer ring is responsible for exciting the first resonant mode whereas the middle ring excites the second resonant mode. The inner most rings, through their Y-shaped slots, create a wide upper operating band by combining the third and fourth resonant modes. To improve this antenna, we have employed circular Photonic Bandgap (PBG) structures in order to obtain a smaller slot antenna with better radiation characteristics. In this design, the cross-polarization level in the E-plane has reduced compared to the first antenna by 5.5 dB, 0.3 dB and 4 dB in the three resonant bands. Also, the crosspolarization in H-plane has reduced by an amount of 3 dB. In addition, the obtained results show that the co-polarization patterns are very similar in all three frequency bands. In both cases we have reduced the size of antennas to 56% and 42% respectively, of conventional microstrip slot antennas. The simulation results are verified by measurements.

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A double layer EBG structure for slot-line printed devices

Boisbouvier

Louzir

Bolzer

et al. 2004

IEEE Antennas and Propagation Society Symposium, 2004.

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Harmonic-less Annular Slot Antenna (ASA) using a novel PBG structure for slot-line printed devices

Cited by 4 publications

References 5 publications

Compact wideband harmonic suppressed antenna using non‐uniform cascaded defected ground structure

Compact wideband harmonic suppressed antenna using non‐uniform cascaded defected ground structure

Two Novel Compact Triple-Band Microstrip Annular-Ring Slot Antenna for PCS-1900 and Wlan Applications

A double layer EBG structure for slot-line printed devices

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