Abstract-The fabrication of single square patch antenna for proposed Leucaena Leucocephala ("Petai Belalang") Wood Plastic Composite (WPC) substrate board (PB Substrate board) and FR4 substrate board is presented in this paper. The experiment objective is to measure the performance of an antenna fabricated on the FR4 and PB substrate (proposed substrate) by comparing the performance in terms of material's dielectric constant and electron mobility and antennas' loss tangent, return loss (S 11 ), radiation pattern and practical antenna transmitting performance. The new substrate compositions of Leucaena Leucocephala stem and polypropylene (PP) are 30% and 70% consecutively. The result for 150 µm (sample B) indicates stability on most dielectric constant (ε r = 3.02), loss tangent (tan δ = 0.029) and electron mobility (5.31 × 10 3 cm 2 /V s ), with the consistency of antenna result, between simulation and measurement. All results obtained will be analyzed and displayed in the form of data and graphs.

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The fabrication of single patch antenna for proposed Leucaena Leucocephala (""Petai Belalang"") Wood Plastic Composite (WPC) substrate board and FR4 substrate board is presented in this paper. The experiment objective was to measure the performance of an antenna fabricated on the proposed board by comparing the performance in term of Dielectric Constant value, Tangent Loss value, Return Loss, Radiation Pattern and Gain with antenna fabricated onto FR4 material substrate board. The idea is to find the potential alternative board replacing conventional printed circuit board (PCB) using commercial FR4 material. The dielectric constant and tangent loss value for both proposed and FR4 substrate board were analyzed with Agilent 85070E Dielectric Probe Kit method. The Fabricated proposed boards were studied in the frequency range of 2.2 to 3.3 GHz since this board will be used in ISM band application that occupied 2.45 GHz frequency spectrum. The parameter composition of proposed board on this paper was focused only on one density composition that is 70% of polypropylene and 30% of leucaena leucocephala filler wood with particle size maintained at 150 µM and moisture content of the filler is less than 5%. The indoor Practical Antenna Measurement method was used to prove the proposed antenna can be used as transmitting antenna and all result obtained were form as data and graph analysis.