A Compact Balanced-to-Balanced Filtering Gysel Power Divider Using \lambda /2 Resonators and Short-Stub-Loaded Resonator

In this letter, a compact balanced-to-balanced filtering power divider (FPD) is presented. It is composed of three half-wavelength resonators and a short-stub-loaded resonator (SSLR). Due to the intrinsic resonance characteristic of the half-wavelength resonator, the bandpass response and power divi...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2017-07, Vol.27 (7), p.645-647
Main Authors: Luo, Ming, Xu, Xin, Tang, Xiao-Hong, Zhang, Yong-Hong
Format: Article
Language:English
Subjects:
Balanced-to-balanced (BTB) circuit
Bandpass
bandpass filter
common mode (CM)
Couplings
Design factors
Design methodology
differential mode (DM)
Equivalent circuits
Filtration
Gysel power divider
Power dividers
Q factors
Resonant frequency
Resonators
Wireless communication
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Summary:In this letter, a compact balanced-to-balanced filtering power divider (FPD) is presented. It is composed of three half-wavelength resonators and a short-stub-loaded resonator (SSLR). Due to the intrinsic resonance characteristic of the half-wavelength resonator, the bandpass response and power dividing function for differential-mode signal are realized and the suppression for common-mode signal is also achieved. The SSLR is utilized as an extra isolation resonator to achieve high isolation between two output ports. A resister is also needed to load on the SSLR for adjusting its loaded quality factor (Q e ). For the demonstration of the design method, an FPD operating at 2.405 GHz has been fabricated and measured. The measured results validate the design method.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2017.2711926