Chip antennas are generally known as antennas which are used in mobile phones instead of rod antennas or helical coil antennas. This type of chip antenna has an antenna element portion and a power supply portion which are formed in an appropriated pattern on a surface of a base body. The antenna element portion and a power supply portion are made of a silver alloy and the base body is made of dielectric plastic having a high dielectric constant. Our chip antenna is equipped with the following characteristics, such as surface mounted devices, small dimension as well as high temperature and humidity stability. Moreover, it can also prevent deformation of the base body accompanying mold shrinkage and temperature change and thus can exhibit desired antenna characteristics with stability. It can be used for wireless communication devices having the function of wireless communication, such as a mobile telephone, a tablet PC, and a smart meter (digital watt meter).
Portable wireless communication devices, such as a smartphone and a tablet PC that are rapidly becoming widespread in recent years, are becoming even smaller and even thinner. As an antenna incorporated into this kind of wireless communication device, a chip-like antenna mountable on a surface of a circuit substrate is suitably used. The application of it is wide, mainly in the field of science and technology. For example, Bluetooth,GPS, WLAN, WIFI, ZigBee IEEE 802.15.4 and 2.4GHz ISM Band Systems. It is possible to transmit and receive radio waves in a plurality of frequency bands by a plurality of antenna element portions having different element lengths. Furthermore, it is also possible to robustly transmit and receive electric waves having a high linearity in GHz frequency bands because the antenna element portions are formed in parallel each other.
|Surface mounted devices||Bluetooth,GPS,WLAN,WIFI|
|Small dimension||ZigBee IEEE 802.15.4|
|High temperature and humidity stability||2.4GHz ISM Band Systems|
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