Super-wideband (SWB) antennas have emerged as a promising technology for next-generation wireless communication systems due to their ability to transmit and receive signals across a wide frequency spectrum. A half-elliptical-shaped patch antenna for a super-wideband antenna is proposed in this paper. The proposed antenna was composed of a half-elliptical-shaped patch with a microstrip feedline and a partial ground plane with a triangular inset and a bent edge ground plane. This proposed antenna was designed using Taconic TLY-5 with a dielectric permittivity of 2.2 and a total dimension of 200 × 220 × 1.57 mm³. The proposed antenna demonstrates a bandwidth of 23 GHz (from 0.5 GHz to 23.5 GHz) with a bandwidth ratio of 47:1.

A design of a dual-band circularly polarized GPS (L1 and L2) receiver has been proposed. This antenna design utilizes the concept of a stacked antenna that feeds through a single coaxial cable. Two radiators are placed on top of the stacked substrate to obtain the dual-band frequency. The probe feed and the chamfered corners on the radiators generate circular polarization. A cross slot applies to the top layer patch to miniaturize antenna dimension and improve the axial ratio. The L1 and L2 bandwidths of the proposed antenna are 71 MHz and 74 MHz, respectively. Both resonant bands' axial ratio bandwidth (3dB) is 18 MHz.

The digital information of natural resources is the main consideration for the policies of continuing development. As an agrarian state, Indonesia requires the information of its agricultural productivity in a fast and accurate fashion to observe the usage of its land. One of the efforts to provide such information is to implement the 4.0 technology in the agricultural field. Artificial Intelligence (AI) has the potential prospect to observe the productive agriculture field in Indonesia. The development of Alap-Alap UAV that is equipped with Camera sensor payload has potential applications as AI technology for productive land mapping. The camera sensor of Alap-Alap UAV is capable of 24 Mega Pixel and obtain the data of land, plant, and vegetation at the surface. The application of the camera's sensor has advantages to the satellite's e.g. overcoming the cloud blockage, real-time data gathering, and better accuracy. The Alap-Alap UAV offers alternative solutions for remote sensing in agricultural activities. One of the advantages of this technology is the low-cost of operational expenditure and its flexibility in operation for its purpose thus it is efficient for taking orthophoto in the agricultural land. The accuracy of the Alap-Alap UAV date is 10 cm/pixel of Ground Sampling Distance (GSD) above 1700 Ha of the area in each hour in 1500 ft of flight altitude. The other advantage is the 6 hours of flight endurance which enables Alap-Alap UAV to produce the preferred quality and quantity of mapping data.

A simple microstrip antenna with periodic grounded conducting post surrounding the antenna is proposed to broaden the 3dB beamwidth without sacrificing size and avoid complex feeding network. The combined effect of the number of posts and their height on the antenna parameters was investigated. The results shows that the 3dB beamwidth of an antenna can be adjusted by changing the height of the conducting post and it can be widened to more than 190° in all azimuth axes, while still maintaining a gain of l. 6dBi.