UC Case No. 2019-492
SUMMARY:
UCLA researchers in the Department of Electrical and Computer Engineering have developed narrowband and high-selective filters with zero-insertion loss.
BACKGROUND:
Effective frequency resources have become a critical component in mobile communication systems as their applications diversify. Narrowband and high-selective filters are employed in devices to obtain such frequency resources, but these types of filters suffer from large insertion loss when implemented in a miniaturized format.
INNOVATION:
UCLA researchers have developed a quality factor enhancement technique that mitigates the large insertion loss issue in narrowband highly-selective miniaturized bandpass filters. The zero-insertion loss characteristic is accomplished by the parametric amplification effect, which compensates any loss introduced by the finite quality factor of passive components, e.g. capacitors, inductors/microstrips. The proposed technique is compatible with conventional integrated circuit (IC) fabrication processes and is potentially operational at high frequency bands.
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ADVANTAGES: