Design of Antenna to Realize Next Generation Communication
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Design of Antenna to Realize Next Generation Communication
Design of Ultra Wide Band MIMO Antenna
UWB and MIMO technologies have attracted considerable research attention for realizing large-capacity and high-speed communication. UWB (Ultra Wide Band) is a communication technology for wider frequency bands than normally used; communication capacity increases with bandwidth. UWB technology offers the possibility of realizing large-capacity and high-speed communication. Of course, antenna designs that can support the bandwidths expected are required. MIMO (Multiple Input Multiple Output) is a communication technology that uses multiple streams to transmit data; data streams are sent and received by using multiple antennas at the same time. This offers high-speed transmission as the multiple antennas can be controlled to establish desirable communication characteristics. We have developed a leaf-shaped bowtie antenna as an UWB antenna; furthermore, we have applied it to MIMO communication.
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Design of Dual-Frequency Antenna by Applying Rectangular Loop Antenna
Hentenna, a type of rectangular loop antenna, is known to have higher gain than other loop antennas with similar loop area. Hentenna is a balanced antenna element, so normally a balanced feed would be used. However, this arrangement yields a single resonate frequency determined by the loop length. However, our research shows by using unbalanced feeds, Hentenna can offer dual-frequency resonance. Our study is developing this antenna for dual-frequency use as well using it for MIMO or wide frequency applications with a parasitic element.
![](pictures/antenna/antenna_eng_002.png)