A study on bandwidth of meander line employing periodic ground structure for application to miniaturization of RF components on GaAs MMIC

In this work, the meander line employing periodic ground structure (MLEPGS) was fabricated on GaAs substrate for application to a miniaturization of RF components on MMIC, and its bandwidth characteristics were thoroughly investigated. According to measured results, the MLEPGS exhibited the wavelength much shorter than conventional meander line. Concretely, the wavelength of the MLEPGS with T of 20 μm was 1.19 mm at 5 GHz, which was 16 % of the conventional meander line. We also studied the bandwidth of the passband and stopband of the MLEPGS. According to the result, the MLEPGS could be employed for application to a miniaturized RF components up to Ka band. Above results indicate that the MLEPGS is a promising candidate for application to a miniaturization of RF components in microwave range.