Coplanar differential bi-strip delay line, higher-order differential filter and filtering antenna furnished with such a line
AssigneeCommissariat a l'Energie Atomique
InventorRaffi BOURTOUTIAN
Life of this patent
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AssigneeCommissariat a l'Energie Atomique
InventorRaffi BOURTOUTIAN
Estimating the term…
This coplanar differential bi-strip delay line (30) comprises two conducting strips (32, 34) disposed on one and the same face (36) of a dielectric substrate and each comprising a first and a second end (E′1, E′2, S′1, S′2). The two first ends (E′1, E′2) of the two conducting strips are respectively joined to two conductors of a first bi-strip port (38) for connection to a first external differential device. The two second ends (S′1, S′2) of the two conducting strips are respectively joined to two conductors of a second bi-strip port (40) for connection to a second external differential device. It is furthermore devised so as to exhibit in the form of a printed circuit structural discontinuities (32B, 32C, 32D, 34B, 34C, 34D) which generate at least one impedance jump and at least one capacitive coupling with interdigitated capacitance between its two conducting strips (32, 34) so as to reproduce a predetermined phase shift, the interdigitated capacitance being formed by at least one pair of conducting fingers (32D, 34D) joined respectively by one of their ends to the two conducting strips.
A coplanar differential bi-strip delay line, comprising two conducting strips disposed on one and the same face of a dielectric substrate and each comprising a first and a second end, the two first ends of the two conducting strips forming two conductors of a first bi-strip port for connection to a first external differential device, the two second ends of the two conducting strips forming two conductors of a second bi-strip port for connection to a second external differential device, which line is devised in the form of a printed circuit so as to exhibit structural discontinuities which generate at least one impedance jump and at least one capacitive coupling with interdigitated capacitance between its two conducting strips so as to reproduce a predetermined phase shift, the interdigitated capacitance being formed by at least one pair of conducting fingers joined respectively by one of their ends to the two conducting strips.
Dependencies are inferred from the claim text.