Title :
Impedance characteristics of microstrip antennas excited by coplanar waveguides with inductive or capacitive coupling slots
Author :
Deng, Sheng-Ming ; Wu, Ming-Dong ; Hsu, Powen
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
11/1/1995 12:00:00 AM
Abstract :
A rectangular microstrip antenna fed by a coplanar waveguide with an inductive or a capacitive coupling end slot is analyzed by using the moment method. Numerical calculations for the input impedances are shown to agree well with those of the measurements. For the purpose of design, a parameter study for the variations of input impedance with length and width of the coupling slot is presented. Differences in the input impedance characteristics between the inductive and capacitive coupling cases are also discussed
Keywords :
antenna feeds; antenna theory; coplanar waveguides; electric impedance; method of moments; microstrip antennas; slot antennas; capacitive coupling slots; coplanar waveguide feed; inductive coupling slots; input impedance; moment method; rectangular microstrip antenna; Antenna measurements; Clocks; Coplanar waveguides; Frequency; Impedance measurement; Microstrip antennas; Millimeter wave technology; Moment methods; Rectangular waveguides; Slot antennas;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
