Agency for Defense Development

Beomjun Park

Joo Rae Park

Cheol Soo Lee

Inseon Kim

Insun Kim

Jintae Park

Ghiback Kim

Yeonsoo Jang

Hongkyun Ryu

An all-metal vivaldi antenna includes a ground plate, an antenna conductor that includes two radiators positioned on the ground plate and facing each other, a resonator that is formed by removing a portion of a connection part between the antenna conductor and the ground plate and shares one side with the ground plate, a tuning post that is formed in a column structure extending from the ground plate toward an inside of the resonator, and a tuning cap in a form extending therefrom.

All-metal vivaldi antenna having band notch and operation frequency tunable characteristics and array antenna including the same

This application relates to a signal filtering device. The device includes a memory and a processor. The processor may generate one or more matrices based on a size of a digital filter bank that generates an output signal by dividing an input signal into a plurality of channels and store in the memory each of the generated one or more matrices to which a plurality of digital filter bank coefficients or a plurality of input signals are assigned. The processor may also partially calculate the stored plurality of digital filter bank coefficients and the plurality of signals based on a number of at least some of the plurality of channels, and calculate the calculated digital filter bank coefficients and signals. The processor may further perform a discrete Fourier transform (DFT) on the calculated signal and compensate for a phase of the discrete Fourier transformed signal according to a preset reference.

Device and method for filtering signal

Growing community of inventors

Daejeon, South Korea

Beomjun Park