Miniaturized Wilkinson Power Dividers with Harmonic Suppressions

ABSTRACT

By shunting a susceptance at the middle of the branch of a conventional Wilkinson power divider, the size can be reduced and the harmonic components can be suppressed. Further, miniaturization can be achieved by optimal layout of the internal area of the conventional power divider. In this article, simple design methods to implement miniaturized Wilkinson power dividers with harmonic suppressions are presented. To validate the design methodology, two power divider prototypes are optimally designed and examined from electromagnetic simulations and experiments. As compared to conventional types, the circuit sizes of the demonstrators are effectively reduced to 15.6 and 24.98%, respectively, and the spurious suppressions are over 20 dB at the desired harmonic frequencies. Meanwhile, the mechanisms of spurious suppression are studied herein. The achieved performance simply confirms the presented design methodology.

KEYWORDS:

• Harmonic suppression
• power divider
• shunt susceptance
• size reduction

Funding

This work was supported in part by the Natural Science Foundation of China (61331007, 61271025 and 61271027), by the DPR Foundation of China (9140C070403150C07003), and by the Program for New Century Excellent Talents in University (NCET-12-0094).

Additional information

Funding

This work was supported in part by the Natural Science Foundation of China (61271025 and 61331007) and by the Program for New Century Excellent Talents in University (NCET-12-0094).