Design and Realization of Circular Polarized Siw Slot Array Antenna for Cubesat Intersatellite Links

Abstract

Abstract-This paper presents the design and fabrication of an antenna based on Substrate Integrated Waveguide (SIW) for intersatellite crosslinks in C-band. The entire antenna consists of two elements of SIW slots array that is fed by a hybrid 3 dB directional coupler. The entire SIW slots array antenna is circularly polarized (CP), and each element has four longitudinal slots. The element's effective field matching is realized with a microstrip to SIW transition. The antenna design has been evaluated with its return loss, gain plot, and radiation pattern characteristics to validate the fabricated antenna. The fabricated prototype antenna radiates a left-handed circularly polarized (LHCP) electromagnetic wave with the peak gain of 5 dB and offers approximately 2% AR bandwidth around 5 GHz.

Worldwide Coverage Mobile Systems for Supra-Smart Cities Communications: Featured Antennas and Design

“…Slots can form a travelling-wave or resonant array, depending on whether the array is either ended by a matching load or by a short-circuit respectively. An example of resonant slot array on SIW is presented in [40], where it manufactured SIW on Rogers-RT3010, with four longitudinal slots, 11 mm length to resonate at 5 GHz. The antennas are placed orthogonal to each other at the edge of a nano-satellite and they are fed through a 90 • hybrid to generate the desired circular polarization.…”

Half-Arrow Slot Antenna for Inter-Satellite Communications

“…Therefore, the HMSIW half-arrow slot antenna has enhanced the bandwidths and gain of the previously designed SIW antenna for inter-satellites communications. A comparison between the performances of the HMSIW half-arrow slot antenna and the previously reported SIW slot array antenna [33] is presented in Table 2. The performance of SIW slot array is less than HMSIW half-arrow slot antenna, taking the consideration that the losses of the HMSIW are higher that SIW [34], because their permittivity and thickness h are different [5].…”

“…In [32] a CP U-slot HMSIW antenna was proposed based on a combination of U-shaped slot etched in the HMSIW top wall and a shorting via placed between the area bounded by the slot and the HMSIW bottom wall. In this paper, following a previous effort made on the design of slotted antenna for inter-satellite communications to overcome the large size and narrow bandwidths [33], we have designed, simulated and manufactured a novel HMSIW slot antenna that combines a significant bandwidth enhancement and small footprint for inter-satellite communications at C-band. Section 2 presents an overview on HMSIW structures.…”

Bandwidth Enhancement of Low-Profile Siw Cavity Antenna With Bilateral Slots

“…Recently, some solutions aimed at enhancing the bandwidth of cavity antennas have been investigated [5][6][7][8][9][10][11][12][13][14][15][16]. In [5], a SIW cavity antenna with a unilateral slot was reported, in which one cavity mode was excited by a probe feeding and energy was radiated from the etched slot.…”

“…Increasing the substrate thickness is a simple and effective solution to improve the impedance bandwidth [8][9][10][11]. Two-layer stacked SIW patch antenna fabricated by using printed circuit board (PCB) process was discussed in [8].…”