Compact, Harmonic Suppressed Gysel Power Divider with Plain Structure

Abstract

A novel compact Gysel power divider with up to 12th, harmonics suppression was proposed in this study. Incorporation of six similar low-pass filters into the conventional Gysel power divider is applied to this design. The proposed power divider reduces the occupied area to only 9 % of the conventional Gysel power divider at 625 MHz (91 % size reduction). A comprehensive comparison between the proposed design and other published studies substantiates the superiority of the proposed design in terms of circuit size and stop-band bandwidth. Furthermore, this design retains the high-power handling capability over the Wilkinson power divider.

Design of a miniaturized planar microstrip Wilkinson power divider withharmonic cancellation

“…Applying an electromagnetic bandgap (EBG) in power divider structure can provide a compact PD with harmonic suppression [5]. Using microstrip resonators instead of 70.7 Ω transmission lines in conventional divider structure leads to a decrease in the size and eliminates the harmonics in [6][7][8][9][10][11]. In [12] open stubs are applied to eliminate 2nd and 3rd harmonics in Gysel divider design, but size reduction and harmonic rejection in this work are not superior.…”

“…Compact size and harmonic canceling are known as advantages in PD design. In terms of size reduction and harmonic suppression, comprehensive studies have been done in recent years [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. In [3], a compact microstrip Bagley divider is introduced, using dual transmission lines technique.…”

Design and implementation of a bandpass Wilkinson power divider with wide bandwidth and harmonic suppression

“…Power dividers (PDs) are important elements in microwave devices which can divide or combine the input signal. WPDs are type of PDs which not only provide good isolation between output ports, but also can reduce the return losses of each port [1][2][3][4][5]. Microstrip transmission lines are used to fabricate the WPD devices in microwave applications.…”

Compact microstrip lowpass filter with ultrasharp response using a square-loaded modified T-shaped resonator

“…Microstrip low-pass filters (LPFs) are important passive elements for the attenuation of unwanted signals and noise in communication systems [1]. LPFs are widely used to suppress unwanted harmonics in active and passive devices such as power dividers, couplers [2][3][4], and amplifiers [5,6]. Therefore, several studies have been reported recently to improve LPF parameters, with various structures and methods to move these parameters closer to the ideal values.…”