In this research, a new design for an array antenna was proposed that features a quasi-isotropic radiation pattern in the electrical plane. The proposed antenna consists of frame radiators. To improve the approval process in terms of impedance and increase directivity, frame radiators connected in series with each other were used, and the circumference length of each radiator at the intermediate frequency equals 2λ instead of λ. Through numerical simulation, the characteristics of the proposed antenna and examples of geometric parameters of array antenna radiators were studied, so that a quasi-isotropic radiation pattern in the electrical plane was obtained. Numerical analysis showed that the proposed antenna has improved radiation characteristics in terms of the gain variation of the radiation pattern over the entire spherical radiation surface and with a wide bandwidth in terms of impedance matching compared to the array antenna with a radiator circumference equal to λ.