Parametric study of microstrip patch antenna on LCP substrate for 70 GHz applications

Analysis and design of a microstrip patch antenna on LCP substrate with optimum performance at 70 GHz is presented. Different design techniques such as analytical modeling, numerical optimization, and numerical variation of dimensions have been considered and an optimal design is presented. The design is a trade-off between different antenna parameters and finding the inset position of the feed line at higher frequencies is a challenge. It is observed that the patch length of antenna is a critical parameter which determines the resonant frequency than its width. A patch width of 1.8 times the patch length can be selected to achieve optimal performance at resonant frequency. A -10 dB bandwidth of 2 GHz has been achieved which makes it suitable for broadband communication applications. Preliminary theoretical results have been presented.

[1]  G. Ponchak,et al.  Characterization of liquid crystal polymer (LCP) material and transmission lines on LCP substrates from 30 to 110 GHz , 2004, IEEE Transactions on Microwave Theory and Techniques.

[2]  R.Q. Lee,et al.  Small-Size X-Band Active Integrated Antenna With Feedback Loop , 2008, IEEE Transactions on Antennas and Propagation.

[3]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[4]  Rod Waterhouse,et al.  Design and performance of small printed antennas , 1998 .

[5]  D. Chatterjee,et al.  Small-size wide-bandwidth microstrip patch antennas , 2001, IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229).

[6]  Optimal feed positions for microstripline-fed rectangular patch antennas by finite difference time domain analysis , 2001, APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577).