Half-Wavelength-Type SIR

The basic structure, electrical characteristics, and application examples of a λg/2 type SIR are discussed in this chapter. Although the λg/4 type SIR is proven to be the most suitable structure for miniaturization, in practical application the λg/2 type SIR realizes far more RF devices than does the λg/4 type SIR. This is due to the fact that the λg/2 type SIR is usually composed of a stripline configuration, thus allowing a wide range of geometrical structures while possessing good affinity with active devices.

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