Multi-and Wide-Band Single-Feed Patch Antenna

NASA's patch antenna technology exhibits higher operational bandwidth (on the order of 20%) than typical patch antennas (less than 10%) and can operate across integer-multiple frequency bands (e.g. S/X, C/X, S/C). Testing of the antenna design has demonstrated &#62 6dB of gain on both S and X bands (boresight), with an axial ratio of &#60 6dB and voltage standing wave ratio (VSWR) &#60 3:1 throughout the entire near-Earth network (NEN) operating bands (22.4GHz and 88.4GHz) with hemispherical coverage. The patch size is on the order of 10 x 10 cm and with associated electronics, is about 1 cm in height. Researchers at NASA's Marshall Space Flight Center have developed a novel patch antenna technology. This simple antenna design provides significant benefits to NASA satellite communication applications, offering a unique wide-band/multi-band operating capability. For other commercial space or non-space applications, the antenna design also offers broad-band capability with high gain for applications where signal strength, and smaller antenna sizes are important. The technology was developed to address challenges at NASA created by the need to design antennas for satellites where the target communication frequency is unknown or unassigned.