Abstract
An active integrated antenna (AIA) which consists of a T-shaped microstrip-line-fed slot antenna is proposed. Since the designed antenna has an electromagnetically coupled feedback loop, it can easily solve the problem of DC isolation between a radiator and amplifier. The fabricated parallel-feedback antenna oscillator shows stable oscillation at a frequency of 10.05 GHz. The measured effective isotropic radiated power (EIRP) is 37.79 mW, and the cross-polarization levels are at least −15-dB lower than those of co-polarization for all directions. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 538–540, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21041
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