Dual-Band Textile Antenna With Dual Circular Polarizations Using Polarization Rotation AMC for Off-Body Communications

This paper presents a reconfigurable frequency microstrip patch textile antenna using slotted technique. The switchable frequency is achieved by implementing three PIN diode switches at the slotted ground of the antenna. It is discovered that the switching element is capable to configure the frequency at six different states of operating frequencies between 1.575 GHz until 2.45 GHz. With certain switches configuration, the antenna is proficient to produce a dual-band frequency of band 1; 1.575 GHz and 2.45 GHz and band 2; 1.588 GHz and 2.36 GHz. Besides, the antenna has successfully perform an axial ratio of less than <3 dB at the GPS operating frequency of 1.575 GHz. A shieldit super is used for the antenna radiator and felt fabric as the antenna substrate. The design and simulated result shows that the presented antenna is potential to be implemented in GPS and Wi-Fi applications.

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A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications

IEEE Access ◽

10.1109/access.2021.3125049 ◽

2021 ◽

pp. 1-1

Author(s):

Hamza A. Mashagba ◽

Hasliza A Rahim ◽

Ismahayati Adam ◽

Mohd Haizal Jamaluddin ◽

Mohd Najib Mohd Yasin ◽

...

Keyword(s):

Mutual Coupling ◽

Reduction Technique ◽

Dual Band ◽

Textile Antenna ◽

Mutual Coupling Reduction

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Dual-band all textile antenna with AMC for heartbeat monitor and pacemaker control applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078721001604 ◽

2021 ◽

pp. 1-16

Author(s):

Farah R. Kareem ◽

Mohamed El Atrash ◽

Ahmed A. Ibrahim ◽

Mahmoud A. Abdalla

Keyword(s):

Indoor Environment ◽

Specific Absorption Rate ◽

The Body ◽

Dual Band ◽

Magnetic Conductor ◽

Control Applications ◽

High Agreement ◽

Low Profile ◽

Textile Antenna ◽

Wearable Medical

Abstract All textile integrated dual-band monopole antenna with an artificial magnetic conductor (AMC) is proposed. The proposed design operates at 2.4 and 5.8 GHz for wearable medical applications to monitor the heartbeat. A flexible and low-profile E- shaped CPW dual-band textile antenna is integrated with a 4 × 4 dual-band textile AMC reflector to enhance the gain and specific absorption rate (SAR). The SAR is reduced by nearly 95% at both 1 and 10 g. The design was measured on the body with a 2 mm separation. The simulated and measured results appear in high agreement in the case of with and without AMC array integration. The measurement was performed in the indoor environment and in an anechoic chamber to validate the design based on reflection coefficient and radiation pattern measurements.

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