WebAug 1, 1996 · Typically, Lange couplers are realized in a microstrip, coplanar wave-guide or some other nonhomogeneous medium. In this case, the even- and odd-mode phase velocities are unequal, and it is difficult to define a quarter-wavelength precisely. WebAn effective mechanism to double the output power is to exploit 3-dB coupler with the same PA units and 3-dB couplers. In-phase 3-dB couplers (e.g., Wilkinson coupler) and 90° 3-dB couplers (e.g., Lange coupler, branch-line couplers, and a pair of 3-dB coupled-lines with 90° electrical length) are successfully adopted in PA combining to gain ...
Design of a Ka-band MMIC Lange coupler - NASA/ADS
WebMar 1, 1992 · A design procedure for three-branch, lumped-element directional couplers that allows an impedance transformation between the input and output ports is also included. Computer simulations of the... WebJul 31, 2024 · An example of application is proposed in MMIC technology, potentially tunable in the frequency range between 1.8 to 2.1 GHz, with a tuning bandwidth of about 15%. … graff wall
Design of lange coupler for MIC and MMIC technology …
WebThis paper presents a novel wideband nonuniform branch line coupler. An exponential impedance taper is inserted, at the series arms of the branch line coupler, to enhance the bandwidth. The behavior of the nonuniform coupler was mathematically analyzed, and its design of scattering matrix was derived. For a return loss better than 10 dB, it achieved … WebA Lange coupler with a Ka-band (26.5~40 GHz) had been designed in a 0.15 μm GaAs MMIC technology. The coupler uses λ/4 wavelength lines as the coupling lines. The … WebNov 22, 1999 · DOI: 10.1109/EDMO.1999.821479 Corpus ID: 109619329; Design and analysis of an X-band MMIC "bus-bar" power combiner @article{Marsh1999DesignAA, … china buffet cabinet for dining room