Latvian Patent No. 14767 “Former of excitation pulses for symmetrical Ultra-wideband (UWB) antenna”. Inventors: M.Greitāns, V.Aristovs, G.Šūpols. Owner: Institute of Electronics and Computer Science. Published: 20.11.2013.

The purpose of the invention is, by modifying circuit of prototype, to obtain a sub-nanosecond impulse former for excitation of a symmetrical ultra-wideband (UWB) antenna. The pulse former consists of two coaxial cable segments with length L and characteristic impedance Z 0 , direct current voltage supply U, charging current limiting resistor R, switch element – avalanche transistor T, symmetrical antenna and asymmetrical pulse former balancing transformer Tr.