A Small Quad-Band Monopole Antenna with Folded Strip Lines for WiMAX/WLAN and ITU Applications

Zehforoosh, Yashar; Rezvani, Mir Hamed

doi:10.1590/2179-10742017v16i41084

Cited by 8 publications

(7 citation statements)

References 20 publications

(15 reference statements)

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“…Although meandered ILAs are a common choice for WLAN modules in mobile handsets, the proposed loop antenna is more suitable for an environment that has parallel conductive plates. In particular, thanks to the design on the edge and currents on the ground, this loop antenna is more compact compared to earlier designs for WLAN antennas, as shown in Table 2 [28][29][30][31][32][33][34][35][36][37][38][39] Figure 4a details the topology of the 2.45 GHz antenna. Along with the current pathway on the PCB ground, the proposed antenna has a half-wavelength loop printed on a 0.6-mm-thick FR4 substrate (ε r = 4.4 and tanδ = 0.02).…”

Section: Antenna Designmentioning

confidence: 99%

Design and Integration of Millimeter-Wave 5G and WLAN Antennas in Perfect Full-Screen Display Smartphones

Lai

Chen

2022

Electronics

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Smartphone industries are seeking to maximize screen size, but a perfect full-screen phone is not yet available due to the unoccupied area required for the mobile antennas. Since a touchscreen is coated with transparent conductive layers, antennas below the touchscreen cannot create outward radiation. Accordingly, a non-metallic area is left for the antennas, which reduces the screen size. In this paper, we propose a design and integration of antennas for future millimeter-wave 5G smartphones to suit a perfect full-screen display. The proposed design consists of three modules, including a 1 × 12 patch antenna array at 28 GHz, a 1 × 8 patch array at 38 GHz, and a loop antenna at 2.45 GHz. The design environment consists of fully metallic top and bottom enclosures, mimicking the touchscreen and the printed circuit board, respectively. The three antennas were implemented on the flanks. Although the design area was limited and contained in parallel conductive plates, the three antennas still provided broad impedance bandwidths (26.5–32.0 GHz, 35.2–42.0 GHz, and 2.41–2.48 GHz) and high gains (16.7 dBi, 16.4 dBi, and 4.3 dBi). The isolation was larger than 20 dB, and the scanning ranges were ±45°. The proposed scheme is the first antenna system designed for perfect full-screen display phones.

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Section: Antenna Designmentioning

confidence: 99%

Design and Integration of Millimeter-Wave 5G and WLAN Antennas in Perfect Full-Screen Display Smartphones

Lai

Chen

2022

Electronics

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“…In addition, demands for antennas used in the Bluetooth and Wireless Local Area Network (WLAN) have received tremendous interest in recent years (Beigi and Nourinia, 2015). Several multi-band microstrip patch antennas were revealed according to the latest requirements for wireless communications applications (Rezvani and Zehforoosh, 2018; Zehforoosh and Rezvani, 2017; Rezvani and Zehforoosh, 2017).…”

Section: Introductionmentioning

confidence: 99%

Printed array antenna with an elephant trunk shape radiating patch for Bluetooth and WLAN applications

Zehforoosh

Zavvari

2020

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Purpose This purpose of this study is to present a novel four-element array antenna in combination with a modified Wilkinson power divider feeding network. Design/methodology/approach The two covering bands of this planar array antenna are achieved by an Elephant trunk shape (ETS) radiating element; therefore, two frequency bands for Bluetooth (2.4 GHz) and the wireless local area network (WLAN) band (5.15-5.825 GHz) are obtained. Findings An improved design of the power divider with curved corners rather than the sharp edges and certain new modifications in the length of matching stubs are implemented. Originality/value This paper describes an improved four-way Wilkinson power divider with excellent loss of insertion and adequate return loss for all ports and good isolation performance within two frequency bands (2.4 and 5.5 GHz) and when loaded with array components; the modified power divider complies with the design requirements. To comprehend its behavior, numerical and experimental results are provided. The simulated and measured results indicate a proper bandwidth coverage of the suggested antenna, stable radiation patterns and high gain.

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“…Moreover, L-shaped and U-shaped slots on radiating patch have been utilized to control the frequency bands in [7]. In [8], a reconfigurable Quad-band microstrip antenna with 2 PIN diodes is proposed. Multi-layer antenna with wide band feature is considered in [9].…”

Section: Introductionmentioning

confidence: 99%

A diamond-shaped patch microstrip antenna with L-shaped stub for WLAN applications

2019

Self Cite

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This article proposes a Dual-band microstrip antenna with Diamond-shaped patch and L-shaped stub for two frequency bands of Wireless Local Area Network (WLAN) application. The combination of 50 Ω microstrip feed line and L-shaped stub, the upper frequency band of WLAN is obtained. This frequency band can be controlled by the length of ground plane. The proposed antenna benefits from omnidirectional radiation patterns for both frequency bands. The intended antenna is simulated by Ansoft HFSS v.15 and CST Microwave Studio and the results are compared. Also, the proposed antenna is implemented on an FR4 substrate with a thickness of 1.6 mm. According to measured results, S 11 of less than -10 dB for frequency ranges of 2.3-2.7 GHz and 5-5.7 GHz with impedance bandwidths of 16% and 13%, respectively are achieved.

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A Small Quad-Band Monopole Antenna with Folded Strip Lines for WiMAX/WLAN and ITU Applications

Cited by 8 publications

References 20 publications

Design and Integration of Millimeter-Wave 5G and WLAN Antennas in Perfect Full-Screen Display Smartphones

Design and Integration of Millimeter-Wave 5G and WLAN Antennas in Perfect Full-Screen Display Smartphones

Printed array antenna with an elephant trunk shape radiating patch for Bluetooth and WLAN applications

A diamond-shaped patch microstrip antenna with L-shaped stub for WLAN applications

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