A Compact Wideband Quadrature Hybrid Coupler

作者：Gong, Pan-Qiang^*; Liang, Chang-Hong

来源：Microwave Journal, 2014, 57(8): 66-+.

• COMPONENTS

A compact wideband quadrature hybrid coupler (QHC) with an arbitrary power division ratio is based on an artificial lumped-element simplified composite right-/left-handed transmission line (SCRLH TL) structure. The SCRLH TL can be easily tailored to satisfy the high or low impedance condition necessary to produce a QHC with a high power splitting ratio. An odd-even mode admittance resonant frequency ratio (n) is introduced to analytically formulate all the SCRLH TL elements, developing a relationship between the n value and the SCRLH TL phase and impedance bandwidths. This establishes a simple criteria to expand the QHC bandwidth. A prototype proof-of-principle 900 MHz QHC with a 10 dB power division ratio is only 4.5 x 4.5 mm(2) in size with greater than 32 percent bandwidth.

• 出版日期2014-8
• 单位西安电子科技大学