Microstrip patch antennas are widely used in advanced wireless communication systems, however, they suffer from excess harmonic radiation. During the transmission of information between antennas (such as a phone call), noise from other parts of the system is captured. This “noise” then affects the quality of the information transmitted between the two antennas, potentially leading to system interference with potential component/ equipment degradation long term. There is a market need for novel methods of harmonic suppression that could be implemented in current generations of wireless handsets.
To reduce harmonic suppression, researchers at the University of Alabama have developed novel antenna designs with ferrite cores. The antenna designs have been demonstrated to significantly suppress harmonic radiation generated by radio frequency components. The designs are microstrip patch antennas with ferrite cores that are arranged on the antenna to realize peak gain at the fundamental frequency
- Blocks extra noise/unwanted signals during the transmission of information from one antenna to another.
- Significantly suppresses harmonic radiation and reduces back lobe.
- Low loss of wanted frequency, high loss of unwanted frequency.
- Can be employed for active integrated antenna applications.
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