The format of a Dual band Band Pass Filter (BPF) with WLAN notch for Microstrip (3.0 - 3.9GHz). The essential sketch proposed in this assignment are primarily based on the Dual band BPF with WLAN notch, which consists of a easy rectangular body developed on a 1.6mm thick commercially reachable Rogers TMM 10 cloth substrate. The twin band BPF insertion loss is expanded to -1.5dB, to -0.5dB and return loss is lowered to -13.25dB to -25dB at 3.0GHz to 3.9 GHz, in accordance to simulated and experimental results. With the assist of Ansoft HFSS model 14.0 software, this twin band BPF used to be designed and its overall performance used to be evaluated. The simulated outcomes exhibit that the insertion loss and return loss of a twin BPF have dramatically increased. The designed filter-antenna operates at a centre frequency of 2.4 GHz and has a fairly wide-band impedance bandwidth of about 1.22 GHz and a fractional bandwidth (FBW) of about 50%. The outcomes of three one of a kind kinds of substrate material, which are Rogers RT5880, Rogers RO3003, and FR-4, are investigated and presented the use of the equal configuration. The filter-antenna graph is simulated and optimised the use of pc simulation technological know-how (CST) software program and is fabricated and measured the usage of a Rogers RT5880 substrate with a peak (h) of 0.81 mm, a dielectric consistent of 2.2, and a loss tangent of 0.0009. The shape is printed on a compact measurement of 0.32 λ0 × 0.30 λ0, the place λ0 is the free-space wavelength at the centre frequency. A properly agreement is got between the simulation and size performance. The designed filter-antenna with the performed overall performance can discover one of kind purposes for 2.4 GHz ISM band and 4G wi-fi communications. Recently, many filter-antenna designs the usage of exclusive kinds of substrate substances has been proposed. In a co-design of a filter-antenna the usage of a multi-layered- substrate is delivered for future wi-fi applications. The layout consists of three-pole open-loop ring transmission strains and a T-shaped microstrip antenna.