Digital Television Signal Reception Research Articles

INTEGRATED DTV ANTENNA FOR PORTABLE MEDIA PLAYER APPLICATION

A broadband antenna integrated with the system ground plane of the Portable Media Player (PMP) device for digital television (DTV) signal reception is proposed. The antenna comprises of a quarter-wavelength monopole and a gaps-coupled open loop antenna that can generate two adjacent resonant modes to form a wide operation band. Result shows a wide bandwidth of 464{856MHz to cover the DTV signal reception in 470{806MHz band Details of the proposed antenna designs and experimental results of the construct prototypes are presented.

Investigation of the Influence of Reflective Insulation on Indoor Reception in Rural Houses

We investigate the effects of reflective (metallic) insulation on indoor digital television (DTV) signal reception in rural houses. Simulation results indicate that under non-line-of-sight (NLOS) conditions, the presence of reflective insulation may significantly degrade indoor signal reception and cause a large variation of signal level inside a house. To predict the average signal level in domestic indoor sites, a simple empirical model that covers the DTV broadcast frequencies is proposed. Simulations also show that directional antennas may not necessarily improve indoor DTV signal reception.

Broadband integrated DTV antenna for USB dongle application

AbstractA novel broadband planar antenna integrated in the USB dongle for digital television (DTV) signal reception is presented. The planar antenna is printed on a dielectric substrate and electrically connected to the system ground plane of the USB dongle. When in operation, the planar antenna is swung upward to be perpendicular to the system ground plane and can provide a wide operating bandwidth (2.5:1 VSWR) of larger than 50% centered at about 630 MHz, allowing it to cover the DTV signal reception in the 470–806‐MHz band. While not in operation, the planar antenna can be swung downward and attached onto the housing of the USB dongle, keeping the aesthetic appearance of the device. Detailed design considerations of the proposed antenna are described, and obtained experimental and simulation results are presented and discussed. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1018–1021, 2007; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.22329

Broadband planar shorted monopole antenna for DTV signal reception in a portable media player

AbstractA novel broadband planar shorted monopole antenna suitable for digital television (DTV) signal reception for portable media player (PMP) applications is presented. The proposed shorted monopole antenna uses an internal matching circuit consisting of a chip capacitor and two narrow strips, which leads to a wide operating bandwidth (2.5:1 VSWR) of 340 MHz (about 53% centered at about 638 MHz) for the antenna. This wide bandwidth makes it very suitable for DTV signal reception in the 470–806 MHz band. In addition, owing to its planar structure, the proposed antenna can be firmly attached onto the surface of the PMP casing, when not in operation. This property is attractive for keeping the aesthetic appearance of the PMP equipped with the proposed antenna. Details of the experimental and simulation results are presented and analyzed. The design approach of selecting a proper chip capacitor for the proposed antenna is also discussed. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 558–561, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22189

End‐fed modified planar dipole antenna for DTV signal reception

AbstractA novel end‐fed modified planar dipole antenna for digital television (DTV) signal reception in the 470–806 MHz band is presented. The antenna is of a narrow rectangular shape (10 mm wide and 235 mm long) and is printed on a dielectric substrate. The antenna comprises a step‐shaped radiating strip (arm 1) and a narrow rectangular radiating strip (arm 2), both separated by an L‐shaped feed gap whose one open end located at the shorter edge or end edge of the antenna. Across this open end of the L‐shaped feed gap, the antenna can be excited to provide a wide bandwidth (2.5:1 VSWR) of larger than 50%, which is much wider than that of a corresponding conventional center‐fed dipole antenna and allows the proposed antenna easily cover the 470–806 MHz band for DTV signal reception. In addition, over the operating band, the radiation performance of the proposed antenna is similar to that of the conventional center‐fed dipole antenna. The proposed end‐fed modified planar dipole antenna is studied in detail in this paper. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 676–680, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22229

Internal DTV receiving antenna for laptop application

A novel internal metal-plate monopole antenna suitable for digital television (DTV) signal reception in the UHF band for laptops is presented. The proposed antenna is a U-shaped metal-plate monopole with a compact cross-sectional area of 5 × 10 mm2. When mounted at the top edge of the supporting metal frame of the laptop display, the proposed antenna shows a low profile of 10 mm only, yet provides a wide operating bandwidth (2.5:1 VSWR) of 310 MHz (about 50% centered at 625 MHz), making it not only suitable for DTV signal reception in the UHF band but also capable of being embedded within the casing of the laptop as an internal antenna. The proposed internal DTV receiving antenna is implemented and studied. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 4–6, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20531