IEEE MTT-S 2008 International Microwave Symposium Technical Program

Session: WEP2F	Interactive Forum:
Chair:	Daniela Staiculescu, Georgia Institute of Technology
Co-Chair:	Ronglin Li, Georgia Institute of Technology

WEP2F-01	Miniature Antenna for RF Telemetry through Ocular Tissue
1260	E. Y. Chow¹, C. Yang¹, A. Chlebowski², W. J. Chappell¹, P. P. Irazoqui², ¹Purdue University, West Lafayette, United States, ²Purdue University, West Lafayette, United States
	In this study, we experiment with the feasibility of wireless telemetry using a miniature wireless system fully implanted within the eye. Of significant importance is the ability to transmit signals from miniature packaged systems without undue absorption of signals. Theoretical calculations found the attenuation through the eye to be -4.5 dB in the far field region, indicating that low power transmission systems can be implemented. Through the use of multilayer integrated Low Temperature Co-fired Ceramics (LTCC) packages, telemetry data through the eye was collected and compared to transmission in free space. In animal studies done using porcine eyes, we were able to successfully transmit and receive from the implanted device in the near field and far field regions measuring 2 dB and 6 dB of power reduction respectively.

WEP2F-02	A Tapered Microstrip Patch Antenna Array for Microwave Breast Imaging
1484	J. P. Stang, W. T. Joines, Duke University, Durham, United States
	Microwave breast imaging is based on the electrical property contrast between healthy and malignant breast tissue. This contrast can be detected using an array of antennas that illuminate the breast with microwave energy through a coupling medium and subsequently measure the resulting scattered fields. An optimal antenna array design will improve a microwave imaging system's ability to detect and resolve tumors by maximizing the system's signal-to-noise ration (SNR) and spatial sampling density while minimizing the effect of mutual coupling. A novel antenna array of tapered microstrip patch antennas operating at 2.7 GHz. is presented that achieves a balance between these competing design goals.

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