Abstract
A 1.8/2.4-GHz dual-band compact Wilkinson power divider was designed and implemented using an integrated passive device process. The design used a common inductor to match impedance in the even mode. The common inductor replaced two shunt inductors in the circuit so the circuit size was reduced. An additional complex load was then used for matching impedance in the odd mode. The circuit measurements showed reflection at all ports better than -11.9 dB, isolation at the output ports better than -14 dB and transmission coefficient better than -4.3 dB, at both operating frequencies. The circuit occupied only 0.036λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">o</sub> ×0.018λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">o</sub> at the higher operating frequency.
Highlights
Power dividers were used in many circuit blocks such as low noise amplifiers, power splitters, array antennas, etc
Wilkinson power dividers (WPD) have been studied extensively in both single and dual-band operations. They were implemented in many forms such as printed-circuit board (PCB), CMOS or in an Integrated Passive Device (IPD)
On PCB, microstrip transmission lines were normally used in WPD circuits
Summary
Power dividers were used in many circuit blocks such as low noise amplifiers, power splitters, array antennas, etc. Wilkinson power dividers (WPD) have been studied extensively in both single and dual-band operations They were implemented in many forms such as printed-circuit board (PCB), CMOS or in an Integrated Passive Device (IPD). A dual-band WPD was designed and implemented on IPD process to operate at 1.8 and 2.4 GHz. In addition to π-network right-handed transmission lines, the design included a common inductor and a complex load connecting the output ports. Complex load and two section transmission lines, a compact dual-band WPD was implemented. The detailed analysis and design are discussed
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