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This paper presents a low-profile, horizontally polarized and compact printed antenna radiating parallel to the ground plane. The proposed antenna consists of a small inner feeding loop, a coupled split ring element and a ground plane. The dimension of the proposed antenna is 45 mm × 50.5 mm × 11.6 mm (0.138λ0 × 0.155λ0 × 0.036λ0). From the results, the −10-dB |S11| of the antenna covers the 920-MHz...
In this paper, the design of multiple loop antenna is presented for near-field UHF radio frequency identification (RFID) applications. The proposed antenna is operated at 920–925 MHz along the standard of the RFID frequency band in Thailand. The antenna can generate the magnetic field distribution in three principal directions in the operating area. The prototype antenna was fabricated on FR4 substrate...
The planar dipole antenna with ultra-wide operation band is proposed in this paper. Instead of complex feeding network, only structural parameter adjustments are used to achieve the desired specification and radiating characteristics. The designed antenna is fabricated on a low-cost glass fiber substrate and has a 10-dB impedance bandwidth over 3.1GHz ∼ 10.6GHz. Experimental results indicate that...
Radar for estimating living-body direction has been studied, recently. However, the calibration of the array antenna is required since the phase error in the array antenna causes angle error in the estimated direction. In this paper, a simple calibration method that uses the channel response with known subject direction is presented. The experiment showed that the proposed method can calibrate the...
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