A coplanar waveguide-fed folded-slot monopole antenna for 5.8 GHz radio frequency identification application

2006 ◽  
Vol 49 (1) ◽  
pp. 71-74 ◽  
Author(s):  
Wen-Chung Liu
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Coplanar Waveguide ◽  
Monopole Antenna ◽  
Frequency Identification

A miniature tri-band RFID reader antenna with high gain for portable devices

2016 ◽  
Vol 9 (5) ◽  
pp. 1163-1167 ◽  
Author(s):  
Bo Wang ◽  
Wenqing Wang
Keyword(s):  
Experimental Study ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Return Loss ◽  
High Gain ◽  
Monopole Antenna ◽  
Portable Devices ◽  
Reader Antenna ◽  
Frequency Identification ◽  
Miniature Antenna

This paper presents a miniature monopole reader antenna for tri-band radio frequency identification (RFID) portable devices. The proposed antenna operates at the main RFID frequencies and can alleviate and compensate for the shortcomings of a single-band antenna. An additional rectangular stub couples with the bent monopole antenna, allowing the latter to resonate at the RFID bands at 902–928 MHz, 2.4–2.48 GHz, and 5.725–5.875 GHz. By bending the feedline, the dimensions of the miniature antenna are reduced to 115.5 × 20 × 1.6 mm3, facilitating its integration into portable devices. The measured bandwidths(return loss < −10 dB) of the proposed antenna are 677, 580, and 250 MHz in the three operating bands, 883–1560 MHz, 2.31–2.89 GHz, and 5.65–5.9 GHz, respectively, with high-gain characteristics. An experimental study of a fabricated prototype of the optimized antenna is performed, and the results verify its good performance.

scholarly journals A Novel Broadband Monopole Antenna with T-Slot, CB-CPW, Parasitic Stripe and Heart-Shaped Slice for 5G Applications

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7002
Author(s):  
Zhendong Ding ◽  
Hao Wang ◽  
Shifei Tao ◽  
Dan Zhang ◽  
Chunyu Ma ◽  
...  
Keyword(s):  
Radio Frequency Identification ◽  
High Efficiency ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Coplanar Waveguide ◽  
Local Area ◽  
Monopole Antenna ◽  
Maximum Efficiency ◽  
Area Network ◽  
Frequency Identification

This paper presents a novel broadband monopole antenna that was equipped with a bottom semicircle ground structure, a parasitic patch, a T-shaped slot, s transmission line, a parasitic strip, heart-shaped slices and a coplanar waveguide (CPW). The simulation results revealed that the proposed design had a relatively high return loss, a wide bandwidth and high efficiency. A prototype of the proposed antenna with an overall size of 0.94 λ0 × 0.94 λ0 × 0.02 λ0 (λ0 is the free-space wavelength) was fabricated and measured. The measurement results showed that the prototype had a bandwidth of 4.02 GHz (4.69–8.71 GHz) and a relative bandwidth of 60%. Besides, the maximum gain was 3.31 dBi and the maximum efficiency was 91.1% in the range of 5 to 8.5 GHz. Furthermore, it was found that the prototype almost achieved omnidirectional radiation. Its operating frequency band covered those of industrial scientific medical (ISM) (5.725–5.850 GHz), the radio frequency identification (RFID) (5.8 GHz) and the wireless local area network (WLAN) (5.15–5.25 GHz and 5.725–5.825 GHz).

A new compact CPW-Fed dual-band monopole antenna for RFID applications

2017 ◽  
Vol 8 (1) ◽  
pp. 69 ◽  
Author(s):  
Ahmed Elhamraoui ◽  
El Hassan Abdelmounim ◽  
Jamal Zbitou ◽  
Ahmed Errkik ◽  
Hamid Bennis ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Radio Frequency Identification ◽  
Coplanar Waveguide ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Microwave Integrated Circuits ◽  
Frequency Identification ◽  
Rfid Applications

<p>This paper presents a study of a new dual-band monopole antenna fed by a Coplanar Waveguide (CPW) line suitable for Radio Frequency Identification (RFID) applications especially designed for RFID readers and covering free ISM bands of 2.45GHz and 5.8GHz. The proposed antenna benefits from the advantages of the CPW line to simplify the structure of the antenna into a single metallic level, by consequent making it easier for integration with microwave integrated circuits. The simulation of the antenna was carried out using ADS from Agilent technologies and CST Microwave Studio electromagnetic solvers. A good impedance bandwidth of 500MHz is achieved in measurement (from 2.1GHz to 2.6GHz for the lower band), while the upper band covers 800MHz (from 5.2GHz to 6GHz). Details of the proposed antenna design and both simulated and experimental results are described and discussed.<strong><em></em></strong></p>

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