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Extreme TeV blazars (ETBs) are active galactic nuclei with jets presumablypointing towards the observer having their intrinsic spectral energydistributions (SEDs) peaked at an energy in excess of 1 TeV. These sourcestypically reveal relatively weak and slow variability as well as an extremelyhigh frequency of the low-energy SED peak compared to other classes of blazars.It proved to be exceedingly hard to incorporate all these peculiar propertiesof ETBs into the framework of a reasonable $\gamma$-ray emission model. ETBphysics have recently attracted great attention in the astrophysical community,underlying the importance of the development of self-consistent ETB emissionmodel(s). We propose a new scenario for the formation of X-ray and $\gamma$-rayspectra of ETBs assuming that electromagnetic cascades develop in the infraredphoton field surrounding the central blazar engine. This scenario does notinvoke compact fast-moving sources of radiation (so-called "blobs"), inagreement with the apparent absence of fast and strong variability of ETBs. Forthe case of the extreme TeV blazar 1ES 0229+200 we propose a specific emissionmodel in the framework of the considered scenario. We demonstrate that thismodel allows to obtain a good fit to the measured SED of 1ES 0229+200.

Nonthermal Radiation of the Extreme TeV Blazar 1ES 0229+200 from Electromagnetic Cascades on Infrared Photon Field