A printed high-gain monopole antenna for indoor wireless LANs

As a convenient and efficient public transport system, high speed railway (HSR) was rapidly deployed in China. Since the fifth generation (5G) mobile communication system is commercially applied, it is necessary for mobile terminals antennas to cover multiple operating bands to be compatible with various communication systems. Here a HSR-mounted broadband and high-gain monopole antenna is proposed. By using the meander technology and introducing the tapered structure, the proposed antenna operates over a bandwidth of 694-960 MHz and 1350-5975 MHz (VSWR<1.8), which covers both 2G-5G mobile communication and WiFi frequency bands. The dimensions of the proposed antenna are 400 mm × 330 mm × 78 mm. The measured average gain is 6.11 dBi over the entire bandwidth.

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A Novel High Gain Monopole Antenna Array for 60 GHz Millimeter-Wave Communications

Applied Sciences ◽

10.3390/app10134546 ◽

2020 ◽

Vol 10 (13) ◽

pp. 4546

Author(s):

Tarek S. Mneesy ◽

Radwa K. Hamad ◽

Amira I. Zaki ◽

Wael A. E. Ali

Keyword(s):

Antenna Array ◽

Communication Systems ◽

Ground Plane ◽

High Gain ◽

Monopole Antenna ◽

Impedance Bandwidth ◽

Single Element ◽

60 Ghz ◽

Defected Ground Structure ◽

Element Array

This paper presented the design and implementation of a 60 GHz single element monopole antenna as well as a two-element array made of two 60 GHz monopole antennas. The proposed antenna array was used for 5G applications with radiation characteristics that conformed to the requirements of wireless communication systems. The proposed single element was designed and optimized to work at 60 GHz with a bandwidth of 6.6 GHz (57.2–63.8 GHz) and a maximum gain of 11.6 dB. The design was optimized by double T-shaped structures that were added in the rectangular slots, as well as two external stubs in order to achieve a highly directed radiation pattern. Moreover, ring and circular slots were made in the partial ground plane at an optimized distance as a defected ground structure (DGS) to improve the impedance bandwidth in the desired band. The two-element array was fed by a feed network, thus improving both the impedance bandwidth and gain. The single element and array were fabricated, and the measured and simulated results mimicked each other in both return loss and antenna gain.

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A Compact High Gain Partial Ground Plane Monopole Antenna For WLAN Application

2018 Conference on Information and Communication Technology (CICT) ◽

10.1109/infocomtech.2018.8722398 ◽

2018 ◽

Cited By ~ 1

Author(s):

Manish Varun Yadav ◽

Sudeep Baudha

Keyword(s):

Ground Plane ◽

High Gain ◽

Monopole Antenna

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A Wideband Rectenna Using High Gain Fractal Planar Monopole Antenna Array for RF Energy Scavenging

International Journal of Antennas and Propagation ◽

10.1155/2020/3489323 ◽

2020 ◽

Vol 2020 ◽

pp. 1-10

Author(s):

Mohammad M. Fakharian

Keyword(s):

Antenna Array ◽

Conversion Efficiency ◽

Power Level ◽

Impedance Matching ◽

High Gain ◽

Input Power ◽

Monopole Antenna ◽

Energy Scavenging ◽

Wireless Power ◽

Circuit Performance

This paper introduces a wideband rectenna that can scavenge ambient wireless power to a range of frequency band from 0.91 GHz to 2.55 GHz efficiently. The proposed rectenna is based on a wideband 2 × 2 fractal monopole antenna array with omnidirectional radiation patterns and high gains of 5 to 8.3 dBi at the desired bands. An improved two-branch impedance matching technique is presented which is designed to enhance the rectifier circuit performance with a relatively low input power ranging from −25 dBm to 10 dBm. Also, a full-wave wideband rectifier that can suitably improve the RF-to-DC power conversion efficiency is designed for the rectenna. A peak efficiency of 76%, 71%, 61%, and 62% is obtained at 950, 1850, 2100, and 2450 MHz, respectively. Measurement results show that a conversion efficiency of 68% has been achieved over an optimal 4.7 kΩ resistor when the simultaneous four-band input power level is −10 dBm. Moreover, an output DC voltage of around 243 mV with voltage varying within 160–250 mV can be achieved by gathering the low ambient wireless power inside laboratory. This study proves that the proposed rectenna can be applied to a range of many low-power electronic applications.

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