Wave transmission lines and networks – Resonators – With tuning
Reexamination Certificate
2004-07-06
2009-06-16
Chang, Daniel D (Department: 2819)
Wave transmission lines and networks
Resonators
With tuning
C333S188000, C333S191000, C310S358000
Reexamination Certificate
active
07548142
ABSTRACT:
The invention discloses a tuneable resonator (100, 200, 300, 500, 600, 700, 900) with a substrate layer (140, 260, 360, 560, 660, 960), which substrate layer supports a structure with a first electrode (130, 240, 350, 550, 650). In connection to the first electrode there is arranged a layer (120, 230, 330, 530, 630, 930) of a material which can be brought to resonate. The resonator further comprises a second electrode (110, 210, 310, 510, 610, 710, 910) arranged in connection to said material which can be brought to resonate, and the material which can be brought to resonate is a ferroelectric material. The ferroelectric material is brought into resonance by applying an electrical field (DC, AC) between the first and the second electrode, the tuning being achieved by varying the electrical field.
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patent: 2003/0071300 (2003-04-01), Yashima
patent: WO 0178229 (2001-10-01), None
patent: WO 2006004470 (2006-01-01), None
Gevorgian, Spartak; “Do We Really Need Ferroelectrics in Paraelectric Phase Only in Electrically Controlled Microwave Devices?”; IEEE Transactions On Microwave Theory and Techniques, vol. 49, No. 11 Nov. 2001; p. 2117-2124.
Findikoglu, A. T.; “Paraelectric Thin Films for Microwave Application”; Integrated Ferroelectrics, 1997, vol. 15, p. 163-171.
Komlik, VV; “Control of the transmission coefficient at the resonant frequency in a four-terminal network with a paraelectric piezoresonator”; Izvestiya Vysshikh Uchebnykh Zavedenii, Radioelektronika, Sep. 1977, vol. 20, nr-9, p. 84-88 AN 1180698.
Gevorgyan Spartak
Jacobsson Harald
Lewin Per Thomas
Vorobiev Andrei
Burleigh Roger S.
Chang Daniel D
Telefonaktiebolagert L M Ericsson (Publ)
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