What is a D2T antenna?

What is a D2T antenna?

The D2T is a non-resonant high-impedence antenna, composed of two folded dipoles dephased by 180°. It has a non-inductive terminating resistor and broadband RF transformer fed with a single 50 Ohm cable.

Is the D2T bi-directional?

The D2T is bi-directional starting from about 10MHz with 10dB F/S. At 21MHz it gains 3dB with 5dB F/B and 10dB F/S, and progressively it reaches 6dB at 30MHz with 5dB F/B and 20dB F/S.

What is the bandwidth of UWB antenna?

According to FCC definition [1] of UWB system, UWB antenna has bandwidth greater than 500MHz or a fractional bandwidth greater than 0.2 where fractional bandwidth is defined as in formula (1). [2] GROUP DELAY AND DISPERSION

What are the parameters to be considered when designing an antenna?

impedancematching, dispersion, radiation efficiency and group delayare among the parameters that must be considered with great care during design. These parameters are usually almost constant in the narrow band antenna but in ultra wideband frequency range they vary significantly.