Scholarly record
STUDY OF A MINIATURE FOUR-LOOP MICROSTRIP COUPLER BASED ON THE USE OF ELECTRODYNAMIC STRUCTURES
Abstract
Directional couplers are widely used in microstrip technology, but their dimensions are tied to the operating frequency. Since the smaller the frequency, the longer the longitudinal length of the quarter-wave segments and the greater the overall dimensions of the coupler. For this reason, use miniaturization, which allows to reduce the area occupied by the device on the substrate, with negligible loss in performance. In addition, there is an economy of the material used in the manufacture of the microstrip device. The study investigated the design of a four-port coupler with a central frequency of 1900 MHz. The dimensions of this device were reduced with the help of original electrodynamic structures, which are placed instead of quarter-wave segments. Such a replacement of the segments with the proposed constructions made it possible to reduce the size of the device relative to the dimensions of the traditional design by 73.5%, while retaining the characteristics of the device in a wide frequency range. The simulation was carried out in the program NI-AWR Design Environment, which greatly simplifies and speeds up the design process of directional couplers. A model of the proposed device was also made to test its performance. The experimental characteristics obtained using a R&S vector network analyzer showed good similarity with the simulation results.
Publication Impact Profile
Publication details
References10
S.-S. Liao and J.-T. Peng, "Compact planar microstrip branch-line couplers using the quasi-lumped elements approach with nonsymmetrical and symmetrical T-shaped structure," IEEE Trans. Microw. TheoryTech.,vol. 54, pp. 3508-3514, Sep. 2006.
K. W. Eccleston and S. H. M. Ong, "Compact planar microstripline branch-line and rat-race coupler," IEEE Trans. Microw. Theory Tech., vol. 51, pp. 2119-2125, Oct. 2003.
S.-S. Liao, P.-T.Sun, N.-C.Chin and J.-T.Peng, "A novel compact-size branch-line coupler," IEEE Microw.WirelessCompon.Lett. vol. 15, pp. 588-590, Sep. 2005.
J. Wang, B. Z. Wang, Y.-X.Guo, L.-C.Ong, and S. Xiao "A compact slow-wave microstrip branch-line coupler with high performance," IEEE Microw.WirelessCompon.Lett. vol. 17, pp. 501-503, Jul. 2007.
Wei-Shin Chang and Chi-Yang Chang, “A High Slow-Wave Factor Microstrip Structure With Simple Design Formulas and Its Application to Microewave Circuit Design,”IEEE Trans. Microw. Theory Tech., vol. 60, no. 11, pp. 3376-3383, Nov. 2012.
H.Ghali, and T. A. Moselhy, "Miniaturized fractal rat-race, branch-line, and coupler-line hybrids," IEEE Trans. Microw. Theory Tech., vol. 52, pp. 2513-2520, Nov. 2004.
C. W. Tang and M.-G.Chen, "Synthesizing microstrip branch-line coupler with predetermined compact size and bandwidth," IEEE Trans. Microw. Theory Tech., vol. 55, pp. 1926-1934, Sep. 2007.
Kimberley W. Eccleston, and Sebastian H.M. Ong, “Compact Planar Microstripline Branch-Line and Rat-Race Couplers,” IEEE Trans. Microw. Theory Tech., vol. 51, no. 10, pp. 2119-2125, Oct. 2003.
Kai-Yu Tsai, Hao-Shun Yang, Jau-Horng Chen, and Yi-Jan Emery Chen, “A miniaturized 2 dB Branch-Line Hybrid Coupler With Harmonics Suppression,” IEEE Microw. Wireless Compon.Lett., vol. 21, no. 10, pp. 537-539, Oct. 2011.
Letavin D.A., “Compact crossover based on low-pass filters”, 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices, EDM 2018; Erlagol, Altai; Russian Federation., DOI: 10.1109/EDM.2018.8434978.
Citing literature
Number of times cited according to Crossref: 7
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
