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Radiation pattern adjustment of a double notched antenna is discussed in this paper to show a way of applying characteristic modes analysis for antenna parameter optimization. In this example, radiation pattern of the antenna is adjusted to omni-directional type and bi-directional type, respectively, by changing responses of two different characteristic modes of the antenna.
To efficiently optimize antenna parameters, we need to know more physical insight of antenna operating principles. The theory of characteristic modes is one of the best methods to help us penetratingly understand the antenna's operating principles. This paper is devoted to apply the theory of characteristic modes to provide an in-depth physical insight into the behavior of some proposed antennas and...
Characteristic modes analysis of a 4G cellular antenna which operates in LTE, GSM, DCS, PCS and 2.4GHz WLAN standards for an eyewear wireless devices is presented. In previous work, the antenna was designed as capacitive coupling element feeding type, using a printed circuit board (PCB) of FR4 substrate. The antenna operates at 700–960 MHz and 1.7–2.7 GHz frequency bands and complies with all the...
In this paper we propose a horizontally polarized antenna with omni-directivity in horizontal plane to use for reference antenna. Ripple coefficients of the radiation pattern in horizontal plane improve to ±0.1 dB. The theory of characteristic modes is used to analyze and illustrate the reason of the excellent omni-directivity property of the proposed antenna.
In this letter, we propose a horizontally polarized antenna with omni-directivity in horizontal plane. Ripple coefficient of the radiation pattern in horizontal plane improves up to dB. The theory of characteristic modes is used to analyze and illustrate the reason for why the omni-directivity property of the proposed antenna improved. Finally, we verify the antenna performances by experiment.
In this paper we propose a horizontally polarized antenna with omni-directivity in horizontal plane. Ripple coefficient of the radiation pattern in horizontal plane improve to ±0.1 dB. The theory of characteristic modes is used to analyze why the omni-directivity property of the proposed antenna increased comparing with that before optimization.
A pair of small and low-profile orthogonal dual-polarization combined antenna has been proposed for miniature indoor Multiple-Input Multiple-Output (MIMO) base station to restrain spatial correlation in Line-Of-Sight (LOS) channel environment. A disk loaded monopole antenna is used for vertical polarization component and a notch array antenna with parasitic elements for horizontal polarization component...
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