Integrated broadband antenna for USB digital Terrestrial TV receiver

Compact USB stick with integrated antenna diversity for digital terrestrial TV reception

“…The total length of the unfolded antenna is approximately equal to the half wavelength at the central frequency. It has been observed in [1] that the folded arm drives the radiation pattern orientation, and by the way the polarization. Thus in order to get the maximum benefit from the polarization diversity, the two folded arms will be set at 90° from each other.…”

“…A 3D perspective of the proposed antenna is presented in Figure 1. The volume of the first arm is sized so that it includes the USB stick receiver in [1], while it insures a good starting point for the antenna design optimization. The second arm of both dipoles is connected to the inputs of the receiver.…”

“…With the recent arrival of digital terrestrial TV in several major countries, there is an increasing interest in developing a compact light weight USB-stick like device allowing the reception of free to air digital TV programming by connecting it directly to an USB port of a PC or a laptop [1,2]. However, portable DVB-T reception, in particular in indoor conditions is highly affected by signal attenuation due to the building penetration loss and frequency selective multipath fading [3].…”

“…In this paper, USB stick is proposed with integrated antenna solution that includes a second order polarization and radiation pattern diversity based on two closely spaced dipole antenna as built in [1]. The design, where the housing of the compact receiver is used as part of the dipole, covers the full UHF band [470-862MHz] as suggested by the European standard [7].…”