The invention relates to a microstrip coupler for coupling a radio frequency, RF, wave into a waveguide. The alkoxycrylene compounds of formula significantly increase the photostability of retinoid compounds in a composition by at least 3-fold and as much as 10-fold or greater. When the exhaust temperature measured between the oxidation catalyst and the filter is lower than a first preset temperature and is equal or more than a second preset temperature lower than the first preset temperature, post injection is added at non-ignition timing following the main injection of the fuel near the compression upper dead center to conduct fuel addition. The method and system further includes providing a fuel enrichment map for an overheat condition of a catalyst that includes fuel delivery amounts that are less than fuel delivery amounts included in a fuel enrichment map for an overheat condition of a seal mat. The template storing portion registers a plurality of users and stores periodic signals for the respective registered users in a form of templates. Additionally, a current limit circuit limits a first current flowing in a direction for changing the memory cells to a low resistance state, and a boost circuit increases, when one of the memory cells changes to the low resistance state, the first current in a first period before the memory cell changes to the low resistance state.