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- Title
Broadband high power stripline compact multisection coupled-line coupler for VHF and UHF applications.
- Authors
TAHERKHANI, Mehdi; AHMADI, Arash
- Abstract
In this study, a broadband stripline multisection coupled-line coupler is designed and fabricated. The coupler has 50 dB coupling in the frequency range of 30 to 1000 MHz. The coupler is designed by cascading several unit section couplers consisting of two unequal length coupled line sections connected by different length uncoupled transmission lines. The unequal length coupled line sections with different coupling coefficients introduce a degree of freedom for bandwidth improvement and can help to reduce the overall dimensions of the multisection coupler. A lumped-element compensating circuit is used in series with the coupling port of the coupler to atten the overall coupling response of the coupler over multioctave frequency bands. The fabricated coupler is compact in size and handles up to 200 W of RF power. The atness of the coupler depends on the frequency response of the multisection coupler and the compensating circuit. The designed coupler has maximum 1 dB ripple in the coupling response over multioctave bandwidth.
- Subjects
DIRECTIONAL couplers; STRIP transmission lines; BROADBAND communication systems; VHF circuits; UHF circuits; BANDWIDTHS; DEGREES of freedom
- Publication
Turkish Journal of Electrical Engineering & Computer Sciences, 2017, Vol 25, Issue 5, p4050
- ISSN
1300-0632
- Publication type
Article
- DOI
10.3906/elk-1610-116