A Bidirectional Microstrip X-Band Antenna Array on Liquid Crystal Polymer for Beamforming Applications

Chieh, Jia-Chi Samuel; Pham, Anh‐Vu

doi:10.1109/tap.2013.2249032

Cited by 37 publications

(15 citation statements)

References 24 publications

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“…A through-via that is in series with an inductive strip is employed to connect the top radiating patch to the polygon slotted ground plane. This structure can enlarge the impedance bandwidth from 17.5% of the previous structure in [4] to 31.4% and also can improve AR bandwidth. Moreover, the area of this antenna is 36% smaller than the previous structure in [4].…”

Section: Introductionmentioning

confidence: 95%

“…This structure can enlarge the impedance bandwidth from 17.5% of the previous structure in [4] to 31.4% and also can improve AR bandwidth. Moreover, the area of this antenna is 36% smaller than the previous structure in [4]. Also, compared to the previous design [8], this antenna has a significant improvement in the impedance bandwidth and AR bandwidth, whose radiation pattern shows acceptable gain and good bidirectional performance.…”

Section: Introductionmentioning

confidence: 95%

“…However, conventional beamforming antennas do not own the characteristic of bidirectional radiation, which would be useful for applications such as microwave sensor networks and broadcasting base stations [2], [3]. In [4], a novel antenna array utilizes bidirectional antenna elements to extend the backwards direction that is orthogonal to the antenna plane. Its impedance bandwidth is about 17.5%.…”

Section: Introductionmentioning

confidence: 99%

“…To produce CP radiation, a simple antenna structure with asymmetrical Y-shaped feeding line was studied in [8] and [9], in which the axial-ratio (AR) bandwidths are only about 0.9% and 4%, respectively. Although the antenna designed in [4] has the bidirectional radiation property, it does not have the ability to excite CP radiation, and although the antennas presented in [8] and [9] can produce bidirectional CP radiation, their AR bandwidth is too narrow. Moreover, the ground plane of the antenna in [9] is not slotted or full, thus it cannot be used as a unit element in large arrays for beamforming applications due to the ground plane structure.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Novel Bidirectional Antenna With Broadband Circularly Polarized Radiation in X-Band

Shen

Lü

Cao

et al. 2014

Antennas Wirel. Propag. Lett.

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A novel bidirectional antenna with a broadband circular polarization (CP) property in X-band is proposed. The CP characteristics are simply achieved by the asymmetrical Y-shaped feeding line. Both the impedance bandwidth and the axial-ratio (AR) bandwidth can be greatly improved by a through-via that is in series with an inductive strip and the polygon slot structure. The antenna is fabricated and measured for verifying the theory. A good agreement is achieved between the simulated and measured results. The 10-dB return-loss bandwidth is 31.4%, in which the AR is less than 2 dB. The measured radiation pattern shows a near-symmetry bidirectional radiation with the peak gain of 4.6 dBi. This antenna is a good candidate as a unit element in beamforming array applications.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Bidirectional Antenna With Broadband Circularly Polarized Radiation in X-Band

Shen

Lü

Cao

et al. 2014

Antennas Wirel. Propag. Lett.

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show abstract

“…Therefore, the challenge in microstrip antenna design is to increase the bandwidth and gain [10]. Patch antenna arrays in the X-band have been widely reported in literature [11][12][13][14][15]. Several authors [16][17][18][19] have focused on technical design of microstrip patch antennas for X-band applications.…”

Section: Introductionmentioning

confidence: 99%

A new small high-gain wideband rectangular patch antenna for X and Ku bands applications

Lakrit

Ammor

Matah

et al. 2018

Journal of Taibah University for Science

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A new small high-gain wideband rectangular patch antenna is proposed in this paper. The antenna has a simple structure where the dimensions are about 11 mm by 7 mm by 1.58 mm leading to a good bandwidth. The antenna structure is optimized and simulated using electromagnetic commercial software, and the measured bandwidth defined by return loss <−10 dB is 1.97 GHz from 10.94 to 12.91 GHz for simulated results and 2.75 GHz covering from 10.8 to 13.55 GHz for measured results using vector network analyser. The gain is up to 4.91 dBi with a good radiation pattern. The comparison between simulation and measurement results permits to validate the structure of the proposed antenna. The low expenses of this profile and its simple configuration allow for an easy fabrication process, with usability in many applications such as radar, satellite and wireless communication. ARTICLE HISTORY

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S‐shaped planar antenna with 45° tilted bidirectional radiation pattern for motorcycle helmets

Kim

et al. 2020

Int J RF Microw Comput Aided Eng

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An S-shaped planar antenna (SPA) with a bidirectional radiation pattern and beam tilt characteristic is proposed to achieve maximum communication distance for helmet applications. The proposed SPA is comprised of an S-shaped radiation strip (consisting of a microstrip meander line and two main arms with two inverted L-shaped parasitic elements) and a rectangular ground plane, where a simplified microstrip power divider is introduced by modifying the feed structure in the center of the SPA, such that the S-shaped radiation strip works in the second resonant mode. The proposed SPA generates a tilted beam in the E-plane with an angle of 45 , which is attributed to the obliquely staggered arms of the antenna at a distance. By introducing inverted L-shaped parasitic elements at the end of the two arms, the directivity of the bidirectional radiation pattern can be further improved, thereby increasing the antenna gain. The working principle is analyzed theoretically, and the effects of the antenna structural parameters on the radiation pattern are also analyzed. The experimental results indicate that the 3:1 VSWR impedance bandwidth is 120 MHz, with a realized peak gain of 1.5 dBi at 2.45 GHz. The proposed antenna is designed for real-world applications, allowing the antenna to be obliquely installed while keeping the peak gain direction horizontal for maximum communication distance.

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A Bidirectional Microstrip X-Band Antenna Array on Liquid Crystal Polymer for Beamforming Applications

Cited by 37 publications

References 24 publications

A Novel Bidirectional Antenna With Broadband Circularly Polarized Radiation in X-Band

A Novel Bidirectional Antenna With Broadband Circularly Polarized Radiation in X-Band

A new small high-gain wideband rectangular patch antenna for X and Ku bands applications

S‐shaped planar antenna with 45° tilted bidirectional radiation pattern for motorcycle helmets

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