A Miniaturized Broadband 4 : 1 Unequal Wilkinson Power Divider

This paper presents the design of a miniaturized unequal 4 : 1 Wilkinson power divider operated across a broadband 1 to 11 GHz, which has a compact size with overall dimensions only of 10 mm × 26 mm. By using a simple defected ground structure (DGS), the microstrip line can be realized with very high impedance of over 150Ω, and consequently a 4 : 1 power dividing ratio can be obtained. Meanwhile, the fabrication problems caused by the very thin conductor microstrip width can be prevented. For verification, the measured results of good dividing ratio, better than 10 dB return loss and better than 15 dB isolation across the whole operating band, are also given.

[1]  Y. Wu,et al.  AN UNEQUAL DUAL-FREQUENCY WILKINSON POWER DIVIDER WITH OPTIONAL ISOLATION STRUCTURE , 2009 .

[2]  K.-K.M. Cheng,et al.  A Novel Approach to the Design and Implementation of Dual-Band Power Divider , 2008, IEEE Transactions on Microwave Theory and Techniques.

[3]  C. Monzon.  A small dual-frequency transformer in two sections , 2003 .

[4]  S. Cohn.  A Class of Broadband Three-Port TEM-Mode Hybrids , 1968 .

[5]  Changjun Liu,et al.  A Compact Dual-Band Power Divider Using Planar Artificial Transmission Lines for GSM/DCS Applications , 2009 .

[6]  Sangwook Nam,et al.  A 4.1 unequal Wilkinson power divider , 2001, IEEE Microwave and Wireless Components Letters.

[7]  Byungje Lee,et al.  A Dual-Band Wilkinson Power Divider , 2008, IEEE Microwave and Wireless Components Letters.

[8]  Jae-Yeong Park,et al.  Fully integrated unequal Wilkinson power divider with EBG CPW , 2003, IEEE Microwave and Wireless Components Letters.

[9]  Yongle Wu,et al.  A Dual Band Unequal Wilkinson Power Divider Without Reactive Components , 2009, IEEE Transactions on Microwave Theory and Techniques.

[10]  Homayoon Oraizi,et al.  Application of grooved substrates for design of unequal wilkinson power dividers , 2008 .

[11]  L. Young.  Tables for Cascaded Homogeneous Quarter-Wave Transformers , 1959 .

[12]  Shulan Li,et al.  Dual-Band Modified Wilkinson Power Divider Without Transmission Line Stubs and Reactive Components , 2009 .

[13]  Chieh-Pin Chang,et al.  A 6:1 Unequal Wilkinson Power Divider with EBG CPW , 2009 .

[14]  Yongle Wu,et al.  Unequal dual-frequency Wilkinson power divider including series resistor-inductor-capacitor isolation structure , 2009 .