The proliferation of satellites in modern space systems has driven the development of launch vehicles capable of deploying multiple satellites in a single mission. The advent of high-data-rate (HTS) geosynchronous and non-geosynchronous satellites, as well as the development of non-geosynchronous satellite constellations and the need for antennas with multiple spot beams, has challenged the feasibility of using traditional parabolic antennas in multi-satellite launch systems. The traditional design of antennas with multiple spot coverages using one or more parabolic reflectors fed by multiple feeds is very bulky, limiting the number of satellites that can be launched with a launch vehicle. To build satellites that can be placed in multi-satellite launch vehicles, the antennas of modern space systems must be replaced with a suitable planar antenna. One of the proposed new technologies for this purpose is the spoof surface plasmon polariton (SSPP) satellite planar antenna technology. After introducing the general properties and design optimization method of this type of antenna, this paper describes the results obtained from the implementation of a satellite SSPP antenna in the Ku band (12.2 - 11.7 GHz). The impedance bandwidth, maximum antenna gain and frequency scanning angle of the constructed antenna are 0.98 GHz, 30.18 dB and 3.6 degrees, respectively, which has a much better performance than other antennas constructed with this technology. To the best of our knowledge, this paper presents two significant developments in SSPP antenna design: an innovative inverted ground-plane for enhanced radiation performance and a standing-wave waveguide feeding methodology for reduced horizontal dimensions.