The Array Microstrip Antenna for Mobile-Internet of Satellite Energy Communication

Abstract

A simple Left-Handed Circularly Polarized (LHCP) proximity-fed equilateral-triangular array antenna with hole is proposed in order to support the mobile-internet of satellite energy communication covering the area of Japan (beam coverage elevation, El = 38° to 58°). In this paper, single-band LHCP triangular-patch array antenna is developed for receiver on ground applications. The targeted minimum gain of the antenna is set to 5 dBic at the central elevation angle (El = 48°), in Tokyo area, for applications using data-internet transfer of around hundreds kbps. The antenna consists of three equilateral-triangular patches with a hole for reception units operating at 2.50 GHz frequency bands. The antenna is simulated using the Method of Moments (MoM) analysis. The simulation results show that the frequency characteristics and the 3-dB axial ratio coverage in the conical-cut direction of the simulated antenna satisfy the target.

Development of triangular array eight patches antennas for circularly-polarized synthetic aperture radar sensor

“…For nine ports power divider, isolation between output ports, for example, port 2 and port 3 (see Figure 1 and Figure 2), is essential for reducing cross-talk that can be caused by coupling between the ports [19][20][21]. By definition, a −9 dB power divider is an ideal passive lossless reciprocal nine ports device that divides power equally in magnitude and phase.…”

“…This case occurs because the location of corporate feeding-line is properly below the radiating patches which have the perturbation segment that make this construction different with other design[15,16] and become a novelty for this research. Moreover, to examine the modified lossless T-junction power divider 24 configurations for both LHCP and RHCP as types of polarization approaching of reciprocal, matched, and lossless at all ports, it is given in the following explanation as proposed method for enhancing the performance of these antennas.For nine ports power divider, isolation between output ports, for example, port 2 and port 3 (see Figure1and Figure2), is essential for reducing cross-talk that can be caused by coupling between the ports[19][20][21]. By definition, a −9 dB power divider is an ideal passive lossless reciprocal nine ports device that divides power equally in magnitude and phase.…”