For certain wireless application (IEEE 802.11a), assume a company uses a special microstrip patch antenna with an input impedance of 150Ω. Design a circuit to match the 50Ω transmission line impedance to the antenna at f=5.8GHz, using a 150Ω resistor to simulate the antenna. In your ADS circuit layout, include a square metal pad for the via hole contact, and
Problem 2 (30pts): A double stub tuner has the disadvantage that it cannot match all load impedances. For this reason, RF/microwave designers use a triple stub tuner (See Figure 2). Using smith chart, design a triple stub tuner with
Design Considerations: Assume that all circuits will be fabricated using FR-4 copper clad PC board: εr=4.7, tanδ=0.02, h=711.2 µm and t=25.4 µm. When generating circuit layouts, do not exceed the maximum circuit board side of 60mm. Check to makes sure that ADS gives you practical circuit dimensions. For example, avoid using microstrip lines with w/h>10, and for resonant stubs keep w/l<0.4.