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Dual-Band Coupled-Line Couplers With Wide Separation Between Bands.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Aug2017, Vol. 65 Issue 8, p2918-2929. 12p. - Publication Year :
- 2017
-
Abstract
- In this paper, we developed three designs of dual-band coupled-line couplers with wide separation between bands. Coupler A was constructed using three cascaded coupled-line sections with a band ratio fH/fL of up to 7. Coupler B, with a stub-tapped coupled line, was developed for compactness and has advantages of high band ratio and controllable bandwidth. Couplers A and B are most suited for weak coupling applications. Coupler C was developed for achieving strong coupling while maintaining a high band ratio, and it was constructed using a coupled-line section connected by two uncoupled lines at its two ends. Coupler C has advantages of high band ratio, strong forward-wave coupling, compact size, and easy fabrication. Coupler A, operating at 0.84 and 5.17 GHz with fH/fL = 6.15 / and a coupling of −10 dB, and Couplers B and C, operating at 0.7 and 2.6 GHz with fH/fL = 3.71 and couplings of −11 and −3 dB, respectively, were fabricated for demonstration. The measured results validate their superior dual-band performance. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 65
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 124539622
- Full Text :
- https://doi.org/10.1109/TMTT.2017.2693153