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This paper presents a beam switched antenna using inverted F antenna for mobile terminal application in satellite communication. The antenna produces unidirectional radiation patterns in yz-plane which can be switched in two directions using a simple feeding circuit. This paper discusses the prototype antenna as well as the feeding circuit which is fabricated to demonstrate the switching of the beam...
This paper presents a dual-polarized switched beam antenna that is used for small base station in LTE environment at frequency 2.6 GHz. The proposed antenna has three layers with square patches and C-shaped slots in symmetrical arrangement. It is fed through two ports simultaneously using switched line phase shifter. The antenna array provides three-beam switching in both horizontal and vertical plane...
A novel indoor base station antenna is proposed in the paper. The low-profile antenna can provide switchable beam as well as two orthogonal polarized radiation patterns. The form and switch of beam directions is achieved by 4 wire elements arranged near the square patch antenna. The beam is tilted by the on/off state of switch for wire elements. A switch is also proposed and utilized to the antenna...
In EMI (Electromagnetic Interference) test, the electric field intensity of radiated emission from EUT (Equipment Under Test) is measured. To find the maximum radiation by EUT, a receiving antenna is moved along a vertical pole, because the electric field intensity is seriously changed by the effect of ground reflection wave. In addition to this vertical movement, the main beam tilting is required...
In this paper, we propose a novel feeding circuit for switching an omni-directional and directive radiation patterns. The proposed circuit changes the radiation patterns by phase differences and switching of the feed elements, and it has five operation modes. We illustrate the operation principle, the output characteristics and the obtained radiation patterns. The analytical results show that the...
A sensor power supply is proposed, comprising an antenna, rectifier and accumulator. For the rectifier, we modified the Greinacher's rectifying circuit to achieve tunable input response for channel selection in the Digital TV (DTV) band and higher RF-to-DC conversion efficiency desired for DTV energy-harvesting given at least ™5 dBm power incidence. Channel selection is implemented by four input matching...
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