Abstract-This paper presents a design of wireless broadband (WiBro)-multi-input multi-output (MIMO) and personal communication service (PCS) antenna for practical mobile phone. To decrease the mutual coupling of WiBro-MIMO antenna, it is considered on the projected ground structure. In addition, two type PCS antennas for multi-function mobile phone are designed. The proposed antennas are well resonated in each operating frequency band. The measured bandwidths of 3-dimensional (3D) and 2-dimensional (2D) PCS antennas are 110 MHz and 130 MHz below −10 dB, respectively. The isolations between WiBro-MIMO and two PCS antenna are below −15 dB by 2D antenna type and −20 dB by 3D antenna type, respectively. The printed IFA has shown a better performance than modified planner IFA with spiral and shorting strip.
This paper presents the combination of space adaptive mean (SAM) filter and time adaptive mean (TAM) filter for removing noise in antenna measurement. The antenna measurement system which is a typical communication system is affected by additive white Gaussian noise (AWGN). Therefore the use of mean filters is suitable for removing noise in this case. The combination of two type of mean filter is suggested to yield the best results and its algorithm is presented in this paper. This algorithm is implemented in practical measurement system and has good results, so the results and discussions are presented.
This paper presents characteristic of antenna for radio frequency identification(RFID) tag with various backside plane. It is assumed that the tag antenna is mounted on materials, i.e., conductors, wood, dielectrics, etc. Characteristics of a printed dipole antenna and a loop antenna with parasitic element are measured. The radiation pattern of antenna is affected by backside plane of metal or magnetic materials.
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