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This work explains the design and analysis of a triple‐band electrically small (ka = 0.56 < 1) zeroth‐order resonating (ZOR) antenna with wideband circular polarization (CP) characteristics. The antenna compactness is obtained due to ZOR frequency of composite right/left‐handed (CRLH) transmission line (TL) and wideband CP radiation are achieved due to the introduction of single‐split ring resonator and asymmetric coplanar waveguide fed ground plane. The proposed antenna obtains an overall electrical size including the ground plane of 0.124 λ0 × 0.131 λ0 × 0.005 λ0 at 1.58 GHz and physical dimension of 23.7 × 25 × 1 mm3 are achieved. The antenna provides a size reduction of 44.95% compared to a conventional monopole antenna. The novelty behind the ohm‐shaped capacitor is the generation of extra miniaturization with better antenna compactness. The antenna provides dual‐polarized radiation pattern with linear polarization radiation at 1.58 and 3.54 GHz, wideband CP radiation at 5.8 GHz. The antenna measured results shows good impedance bandwidth of 5%, 6.21%, and 57.5% for the three bands centered at 1.58, 3.54, and 5.8 GHz with a wider axial ratio bandwidth (ARBW) of 25.47% is obtained in the third band. The antenna provides a higher level of compactness, wider ARBW, good radiation efficiency, and wider S11 bandwidth. Hence, the proposed antenna is suitable for use in GPS L1 band (1.565‐1.585 GHz), WiMAX 3.5 GHz (3.4‐3.8 GHz) GHz, WLAN 5.2/5.8 GHz (5.15‐5.825 GHz), and C‐band (4‐8 GHz) wireless application systems. [ABSTRACT FROM AUTHOR]

In this manuscript, a compact UWB with dual band‐notched planar monopole antenna is investigated. The band notched characteristics at WiMAX and WLAN is obtained by connecting two pairs of stubs to the modified ground plane. The size of proposed antenna is 25(W) × 30(L) × 1.6(H) mm3 which consists of a fork shaped structure as a main radiating element and excited with a 50‐Ω microstrip line. The proposed antenna covers Bluetooth frequency band (2.4‐2.48 GHz) along with UWB spectrum without increasing the size of the antenna. The measured operating frequency of the proposed antenna is from 2.4 to 12.8 GHz along with WiMAX and WLAN band‐notched. Moreover, the measured gain of the proposed antenna varies between 2 and 6 dBi except notched band. At notched frequencies, it is −1 and −6 dBi at WiMAX and WLAN, respectively. The total antenna efficiency varies from 80% to 95% except notched frequency bands. The radiation patterns and time domain characteristics are also analyzed and found suitable for the modern UWB applications. Finally, a prototype of dual band‐notched antenna is manufactured and its characteristics are measured using network analyzer. The simulated and measured results are found in close agreement. [ABSTRACT FROM AUTHOR]