One-sided directional slot antenna with impedance matching circuit for 3D packaging

This paper presents the design and implementation of one-sided directional slot antenna with impedance matching circuit for 2.4 GHz application. The impedance matching circuit is realized by applying 1-stage band-pass filter (BPF). This proposed antenna has 3-layer structures. Antenna and impedance matching section is on the top layer. Ground plane of the RF circuit is on the bottom layer. Floating metal layer is inserted between the top and bottom layers. Floating metal layer generate the one-sided directional radiation. We fabricated this antenna on FR4 substrate and measured the frequency characteristics. Also, commercialized 2.4 GHz band transmitter is attached on the bottom of the proposed antenna.