ISR News Story
FICA: Low Profile F-Inverted Compact Antenna (ISR IP)
ISR intellectual property available to license
Inventors: Bo Yang, Felice Vanin, Xi Shao, Quirino Balzano, Neil Goldsman
Researchers at the University of Maryland have designed an electrically small antenna by carefully balancing the trade offs in terms of communication distance, stringent geometrical size limitations, bandwidth, and antenna efficiency. A prototype dielectric loaded FICA has been built and measured through the communication range of custom-integrated application-specific WSN elements at 916 MHz. The design is low profile, small volume and is suitable for WSN. The results indicate a promising potential for the effective use of the novel FICA in WSN where 3-dimensional integration and size reduction are vital requirements.
In some wireless sensor network systems, such as smartdust systems, the size of these sensors should not be noticeable. Ideally, these sensors should be as small as sand or dust. Therefore antennas with a large plane ground cannot be applied in these devices. The F-Inverted Compact Antenna (FICA) proposed by he inventors, successfully reduces the required ground plane size from a quarter wavelength to a few percent of the wavelength. The gain of the antenna has been measured and it is 5 dB less than a half wave dipole in the free space.
The mass production cost of the antenna is negligible compared to the CMOS circuits part of the wireless sensor node. A large profit margin and market for these electrically small antennas is expected.
For more information
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June 23, 2007