National Taiwan University

Yi-Fong Lu

Yi-Cheng Lin

Yi-Chia Chen

Kuo-Fong Hung

An antenna module is provided for transmitting a wireless signal. The antenna module includes a reflective superstrate, an antenna substrate, a feed conductor, a ground layer and a reflective pattern. The reflective superstrate includes a third surface and a fourth surface, wherein the third surface is opposite to the fourth surface. The antenna substrate includes a first surface and a second surface, wherein the first surface is opposite to the second surface. A feed conductor is disposed on the first surface. The ground layer is disposed on the second surface. The reflective pattern is formed on the third surface and faces the feed conductor, wherein a reflection gap d is formed between the reflective pattern and the ground layer, and the wireless signal has a wavelength &#x3bb;, and the reflection gap d is between &#x3bb;/20 and &#x3bb;/80.

Antenna module and design method thereof

An antenna module is provided. The antenna module includes a reflective superstrate, an antenna substrate, an antenna and a reflective pattern. The antenna is disposed on the antenna substrate. The reflective pattern is formed on the reflective superstrate, wherein a reflection gap is formed between the reflective superstrate and the antenna substrate. The reflective pattern provides a first reflection phase angle, the antenna substrate provides a second reflection phase angle, the first reflection phase angle includes a first determined phase angle &#x394;, the first determined phase angle &#x394;is not 0&#xb0;, the first reflection phase angle is about &#x2212;(180&#xb0;&#x2212;&#x394;), the second reflection phase angle includes a second determined phase angle &#x394;, the second reflection phase angle is about &#x2212;(180&#xb0;&#x2212;&#x394;), a dimension of the reflection gap is directly proportional to a total predetermined phase angle &#x394;=&#x394;+&#x394;, and the total predetermined phase angle is between 0&#xb0;&#x2dc;90&#xb0;.

An antenna is provided. The antenna includes a substrate, a feed conductor, a ground layer and a radiation slot. The substrate includes a first surface and a second surface, wherein the first surface is opposite to the second surface. The feed conductor is formed on the first surface. The ground layer is formed on the second surface. The radiation slot is formed on the ground layer, including a first radiation portion, a second radiation portion and a third radiation portion, wherein the second radiation portion connects the first radiation portion and the third radiation portion, the radiation slot is U shaped, and the feed conductor corresponds to a location between the second radiation portion and the third radiation portion.

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Taipei, Taiwan

Yi-Fong Lu