Novel Design and Fabrication of a Tunable Watch Antenna for Wideband Wireless Applications

The novel design and fabrication of tunable watch antenna for both wideband wireless applications are presented in this paper. Arrows in the watch radiating patch designed to control the bandwidth; also a ground structure designed beneath the radiating patch to allow multi-band operation. If the arrows of the watch mention to a certain time; this allows certain multiband, while if the time changes it allows another different multiband, the antenna performs as a wideband antenna (WBA). Furthermore, we can obtain different frequency bands by assuming a mechanism to change the time of the watch. The antenna examined at 1, 2, 3, 4 o’clock in simulation; while the 1:45 o’clock design was fabricated. The S ₁₁ in the four simulated cases was examined to check the obtained frequency bands. The 1:45 o’clock fabricated antenna has a unique design and footprint of (diameter 30 x 0.635 height) mm. The S ₁₁ for the simulated and measured antenna was examined. The obtained gain and efficiency were 70 dB and − 20 dB, respectively. The axial ratio also examined and was less than 3dB. When the position of either the minutes or hours arrow changes the antenna acts as a WBA with different operating frequency bands. The mechanism of the proposed antenna designates it as a wideband antenna for GSM, CDMA, UMTS, LTE, Wi-MAX, 5G (Ultra-Fast & Low Latency) communications applications