| 摘要 |
<p>An antenna for body near-field is provided. The antenna includes a first antenna unit, a second antenna unit, a first feeder, a second feeder and a third feeder. The first antenna unit includes a first baffle-board for avoiding the body to absorb the antenna voltage, a first symmetric-oscillator, and a first isolated component. One end of the first feeder electrically connects with the first symmetric oscillator. The second antenna unit includes a second baffle-board for avoiding the body to absorb the antenna voltage, a second symmetric-oscillator, a second isolated component. One end of the second feeder electrically connects with the second symmetric oscillator. The other end of the first feeder and the other end of the second feeder electrically connect with one end of the third feeder. The addition of baffle-boards to the antenna enables that the radiation-direction patterns of the antenna symmetric-oscillators concentrate on the direction toward the sky, and two antenna units are set suitably so that the antenna-radiation-direction patterns with wider lobes are formed, the loss of gain is reduced when the antenna is close to the body, the structure of the antenna is made simple and the cost of its design becomes less.</p> |
