Jeffrey S. Fu

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—The ground plane affects the characteristics of a planar inverted-F antenna (PIFA) significantly. Using the idea of the high-impedance surface to construct the ground plane, a new type of compact PIFA with a photonic bandgap type (PBG-type) ground plane is proposed. Both the traditional PIFA and the proposed antenna are analyzed using the finite-difference(More)
In this paper, we present the low noise amplifier using new feedback connection configurations. The UWB LNA is design in 0.18 Pm TSMC CMOS technique to achieve high gain, small size and low noise. The LNA achieved 11 dB of average power gain, low 2.87 dB noise figure (NF),-10.9 dB input match,-7 dB return loss,-3 dBm of IIP3 and only 0.54 mm 2 size with 15(More)
—This paper has presented a novel dual-band bandpass filter with two sets of resonators based on stepped-impedance, which can achieve size reduction. Two sets of resonators are employed in the filter, one resonate at the 60 GHz and the other at the 77 GHz. The dual-band filter can be realized flexible passband and bandwidth selections by utilizing impedance(More)