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Subject: search.filters.subject.Lumped transmission line

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    Compact Wilkinson Power Divider with Common Inductor on the IPD Process
    (2021-01-01)
    Pakasiri, Chatrpol
    ;
    Wang, Sen
    This paper presents a Wilkinson power divider using a common inductor. The lumped topology uses the inherently inductive loss of the inductor as a part of the design, so the conventional resistor for high isolation can be omitted. Therefore, low-loss and high-isolation performances of the compact circuit were achieved. The proposed 2.5-GHz divider was implemented on a silicon-based integrated passive device process. Measurement of the prototype chip had a reflection coefficient below 18 dB at all ports, an insertion loss of 0.5 dB and isolation above 28 dB. The chip size is merely 0.011λ o× 0.019λ o.
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    Dual-band compact wilkinson power divider using common inductor and complex load
    (2020-01-01)
    Pakasiri, Chatrpol
    ;
    Wang, Sen
    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 only 0.036λο λ0.018λο at the higher operating frequency at the higher operating frequency.
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    Improvement of transmission line circuit on lossy substrate with application on phase shifter design
    (2019-03-01)
    Pakasiri, Chatrpol
    ;
    Kongchayasukwat, Thitipun
    Lumped transmission line circuit design on lossy substrate is studied in this paper. Conventional single section lumped transmission line cannot perform well on lossy substrate as its electrical length gets longer. Multi-section transmission lines can be used to improve transmission line properties in this case. Phase shifter circuits are designed with a large electrical length transmission line. By using a multi-section transmission line, the resulting transmission line properties are better than those of single section transmission line.