Investigation On 60GHz CMOS On-chip Antenna

Nowadays, with the rapid development of wireless communication, including mobile terminals, automotive equipment and other needs of the wireless network, the antenna of terahertz frequency is increasing gradually. And through this communication frequency, the speed of transmission communication between electronic devices accesses at up to thousands of megab ytes a second(GBPS), 40-100 times the rate of the current wireless LAN technology. At the same time, CMOS technology, due to its high frequency ability, has become a viable material which is wildly applied to the communication technology. In addition, CMOS technology contributes for reduce the system of the whole antenna.The on-chip antenna, as the name implies, is a integrated system of antenna design which is based on semiconductor technology. Compared with the PC B printed antenna, the on-chip antenna is not only in favor of reducing the size of ICS, but can greatly reduce the interconnected transmission caused by the feeding part of the loss.This paper firstly introduces the related theory of antenna, and the antenna of the related parameters, in order to lay a good foundation for later design antenna. Then mainly introduces the related theory of the technique of artificial magnetic conductor, including surface wave band gap characteristics and reflection phase band- gap characteristics. This paper designs two kinds of the 60 GHz artificial magnetic conductor structure, respectively, including the “mi” type and “#” type, and simulates and analysis the performance of the two artificial magnetic conductor structures. And the radiation characteristics of artific ial magnetic conductor structure lies in different sizes and locating in different metal layers. For the AMC of “mi” type, the relative bandwidth is 26.7% when the resonance frequency reaches 60 GHz, and for the AMC of “#” type, the relative bandwidth is 25% when the resonance frequency reaches 60 GHz. And this paper designs dipole antenna and monopole antenna using the “#” type artificial magnetic conductor. The dipole antenna which bases on “#” type artificial magnetic conductor structure, relative to the antenna without AMC, its gain improves about 1.0dB, and radiation efficiency increases by about 20.0%. Likewise, the monopole antenna which bases on “#” type artificial magnetic conductor structure, relative to the antenna without the AMC, its gain increases 0.91 d B, radiation efficiency increases by 11%. At the same time, this paper also compares the radiation performance of the antenna basing on the same structure of artificial magnetic conductor, when the artificial magnetic conductor structure lies in different CMOS metal layers and has different period of the structure.