REALIZATION OF A COMPACT BRANCH-LINE COUPLER USING QUASI-FRACTAL LOADED COUPLED TRANSMISSION-LINES
نویسندگان
چکیده
منابع مشابه
Realization of a Compact Branch-line Cou- Pler Using Quasi-fractal Loaded Coupled Transmission-lines
An extremely compact branch-line coupler operating at 900MHz is presented without the use of via-holes, multilayered technique, or air-bridged. The technique presented here uses the concept of fractals to load a coupled transmission-line in order to realize a compact quarter-wavelength transmission-line, which forms the couplers arms. It is shown that the proposed branch-line coupler’s performa...
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This paper presents the modified design that can reject harmonic components in the branch-line coupler. After adding open stubs at the center of branch lines of the traditional design, their new network parameters can be found in order to maintain the conventional function at an operating frequency and suppress its harmonic terms chosen. Experimental results show the second and third harmonic s...
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This paper proposes a compact and miniaturized branch-line coupler using a crossing bond wire structured slow-wave branch line (CBWSWB). The proposed coupler achieves a size reduction of 82% compared with a conventional implementation. Measured S11, S21, S31 and S41 of the proposed coupler are better than −24, −3.7, −3.7 and −28 dB at 3GHz, respectively. Furthermore, the phase difference betwee...
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A novel branch-line coupler which can operate at two frequencies is presented in this paper. The proposed planar topology, which is different from the conventional one, is analyzed and designed. The new coupler maintains not only compact but also dual-band characteristics. The length of the proposed stepped-impedance lines can be adjusted flexible according to the required operation frequency. ...
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ژورنال
عنوان ژورنال: Progress In Electromagnetics Research C
سال: 2010
ISSN: 1937-8718
DOI: 10.2528/pierc10031303