Wideband bandpass-to-all-stop reconfigurable filtering power divider with bandwidth control and all-passband isolation

A novel wideband bandpass-to-all-stop reconfigurable filtering power divider is proposed in this study, which allows for four-order bandpass-to-all-stop reconfigurable operating function and equal power division. Its circuit configuration includes the cascaded coupled-line sections with tight coupling to extend the impedance transforming. Furthermore, with the introduction of the half-wavelength open-circuit stubs, which controls the bandwidth, extra transmission poles located at the cut-off frequency are generated, thus resulting in high frequency selectivity. Moreover, by using a single resistor between input coupled-lines, the high all-passband isolation can be achieved. The grounding are then loaded to the output coupled-lines to enable bandpass-to-all-stop operating functionality. For demonstration, a prototype operating at 2 GHz is designed, simulated, and measured with a 15 dB bandwidth of 51%, 19 dB stopband rejection up to 5 GHz, and 14.5 dB all-passband isolation, which shows a good agreement between the simulated and measured results.

[1]  Amin M. Abbosh,et al.  Wideband Four-Way Filtering Power Divider With Sharp Selectivity and Wide Stopband Using Looped Coupled-Line Structures , 2016, IEEE Microwave and Wireless Components Letters.

[2]  Sheng-Fa Chang,et al.  Compact microstrip electronically tunable power divider with Chebyshev bandpass response , 2014, 2014 Asia-Pacific Microwave Conference.

[3]  Kaijun Song.  Compact filtering power divider with high frequency selectivity and wide stopband using embedded dual-mode resonator , 2015 .

[4]  Xiu Yin Zhang,et al.  Single- and Dual-Band Power Dividers Integrated With Bandpass Filters , 2013, IEEE Transactions on Microwave Theory and Techniques.

[5]  Tao Yang,et al.  A 1.3–2.08 GHz Filtering Power Divider With Bandwidth Control and High In-Band Isolation , 2016, IEEE Microwave and Wireless Components Letters.

[6]  Ruey-Beei Wu,et al.  Design of Miniaturized Filtering Power Dividers for System-in-a-Package , 2013, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[7]  D. Pozar.  Microwave Engineering , 1990 .

[8]  Bin-Jie Hu,et al.  Gysel Power Divider With Arbitrary Power Ratios and Filtering Responses Using Coupling Structure , 2014, IEEE Transactions on Microwave Theory and Techniques.

[9]  Bo Zhang,et al.  Wideband filtering power divider with high selectivity , 2015 .

[10]  Cheng-Yu Lin,et al.  Compact Microstrip Filtering Power Dividers With Good In-Band Isolation Performance , 2014, IEEE Microwave and Wireless Components Letters.

[11]  Wen-Hua Tu,et al.  Wide-stopband wilkinson power divider with bandpass response , 2014 .

[12]  Yong Fan,et al.  Dual-band in-phase filtering power dividers integrated with stub-loaded resonators , 2014 .

[13]  Zabih Ghassemlooy,et al.  Wideband Filtering Power Divider With Ultra-Wideband Harmonic Suppression and Isolation , 2016, IEEE Access.

[14]  Dimitrios Peroulis,et al.  Fully-tunable filtering power dividers exploiting dynamic transmission-zero allocation , 2017 .

[15]  Dimitrios Peroulis,et al.  Reconfigurable Single/Multi-Band Filtering Power Divider Based on Quasi-Bandpass Sections , 2016, IEEE Microwave and Wireless Components Letters.

[16]  Li Gao,et al.  Compact Tunable Filtering Power Divider With Constant Absolute Bandwidth , 2015, IEEE Transactions on Microwave Theory and Techniques.

[17]  Junhyung Jeong,et al.  A design of unequal termination impedance power divider with filtering and out-of-band suppression characteristics , 2015, 2015 European Microwave Conference (EuMC).

[18]  Sheng Sun,et al.  A Novel Wideband Bandpass Power Divider With Harmonic-Suppressed Ring Resonator , 2013, IEEE Microwave and Wireless Components Letters.

[19]  Jun-Fa Mao,et al.  A Four-Way Microstrip Filtering Power Divider With Frequency-Dependent Couplings , 2015, IEEE Transactions on Microwave Theory and Techniques.

[20]  E.M.T. Jones,et al.  Coupled-Strip-Transmission-Line Filters and Directional Couplers , 1956 .

[21]  Yu-Ta Chen,et al.  New Wilkinson Power Dividers and Their Integration Applications to Four-Way and Filtering Dividers , 2014, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[22]  Zabih Ghassemlooy,et al.  Generalized Dual-Band Unequal Filtering Power Divider With Independently Controllable Bandwidth , 2017, IEEE Transactions on Microwave Theory and Techniques.