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A compact log periodic antenna (LPDA) is presented in this paper. In this paper, a slotted second iteration of LPDA is demonstrated for size reduction that used for UHF digital TV band application. The proposed antenna operates from 0.5GHz to 1.5GHz for the reflection coefficient ≤ −10dB and maintain the gain of more than 5dBi. The antenna is designed on FR4 Epoxy dielectric substrate with the thickness...
A flexible printed antenna has been developed for digital television (DTV) reception. The antenna is a meander line printed on a polyimide film. It is extremely thin, flexible, compact, and very light weighted. The antenna is designed to operate in the UHF band with a relatively broad bandwidth covering the DTV broadcast frequency in Thailand. Due to its thinness and flexibility, the antenna is suitable...
This paper presents the design of O-shape monopole antenna with rectangular tuning stub to support the digital TV system which is simulated by using CST program. This antenna is designed coverage the digital TV system. The dimension of prototype antenna was 60 mm. × 100 mm. with etching technique and tuning impedance matching on antenna patch structure for bandwidth expansion. The measurement results...
We have studied a high impedance antenna in order to improve the rectifier efficiency for energy harvesting applications. Folded dipole antenna (FDA) with high impedance of over 10 kΩ is proposed. To obtain higher impedance stepup ratio compared with the conventional FDA, an FDA consisting with three strip conductors is investigated. Impedance stepup ratio is calculated and the results in theory,...
This paper presents the compact asymmetrical patch dipole antenna for digital terrestrial television reception in indoor environment. It can be operated in the frequency of 430–980 MHz. The antenna structure is a patch designed on a rectangular printed circuit board (PCB). The patch is cut as asymmetrical planar dipole as the radiating element on the FR4 substrate that is appropriated for indoor application...
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