Variable impedance matching networks for stretchable antennas

A method comprising:

• determining an inductance (“LA”) for an antenna;
• determining an expected range of strains for the antenna based on predetermined a flexible substrate, the flexible substrate configured to flex in at least an X dimension and a Y dimension, wherein the X and Y dimensions are orthogonal and coplanar with a surface of the flexible substrate;
• determining changes in L based on the expected range of strains on the flexible substrate;
• determining a configuration of an impedance matching network based on the determined changes in L and the expected range of strains, wherein a capacitance (“CM”) or an inductance (“LM”) of the impedance matching network is configured to vary (i) based on a flexing of the flexible substrate in the at least one of the X or Y dimensions, and (ii) in proportion to the determined changes in LA to maintain a substantially constant impedance of the combination of the impedance matching network and the antenna;
• forming the antenna on a flexible substrate;
• forming the impedance matching network on the flexible substrate, the impedance matching network having the determined configuration;
• and
• coupling the antenna to the impedance matching network.