Ferroelectric devices and method relating thereto
First Claim
1. Electrically controllable/tunable microwave device (10;
-
20;
30;
40;
50;
60;
70;
80;
90A;
90B) comprising a ferroelectric substrate (101;
201;
301;
401;
501;
601;
801;
901A-C;
901D-F) with a variable dielectric permittivity and conducting electrodes (102,103A-C;
202,203;
302,303;
402,403;
502,503;
603A,A′
, 603B,B′
;
803A-C,804;
902A-C,903A-C;
902D-F,903D-F) arranged on said substrate, and the capacitance of which depends on applied voltage C(V), characterized in that the microwave device comprises at least two sections or parts of the substrate/electrodes for each of which different electrical field strengths are generated upon voltage application, wherein said generated electrical field strengths are controlled by means of the design of the device and/or the voltage application such that the slope (dC(dV) of the voltage dependence of the capacitance (C(V)) of the microwave device can be controlled.
8 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to an electrically controllable/tunable microwave device (10) comprising a ferroelectric substrate (101) with a variable dielectric permittivity and conducting electrodes (102, 103A-C), arranged on said substrate, and the capacitance of which depends on applied voltage C(V), the microwave device comprises at least two sections or parts of the substrate/electrodes for each of which different electrical field strengths are generated upon voltage application. Said generated electrical field strengths are controlled by means of the design of the device and/or the voltage application such that the slope (dC(dV) of the voltage dependence of the capacitance (C(V)) of the microwave device can be controlled.
6 Citations
29 Claims
-
1. Electrically controllable/tunable microwave device (10;
-
20;
30;
40;
50;
60;
70;
80;
90A;
90B) comprising a ferroelectric substrate (101;
201;
301;
401;
501;
601;
801;
901A-C;
901D-F) with a variable dielectric permittivity and conducting electrodes (102,103A-C;
202,203;
302,303;
402,403;
502,503;
603A,A′
, 603B,B′
;
803A-C,804;
902A-C,903A-C;
902D-F,903D-F) arranged on said substrate, and the capacitance of which depends on applied voltage C(V),characterized in that the microwave device comprises at least two sections or parts of the substrate/electrodes for each of which different electrical field strengths are generated upon voltage application, wherein said generated electrical field strengths are controlled by means of the design of the device and/or the voltage application such that the slope (dC(dV) of the voltage dependence of the capacitance (C(V)) of the microwave device can be controlled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
20;
-
22. A method of controlling the voltage/capacitance (V/C) characteristic of an electrically controllable/tunable microwave device comprising a ferroelectric substrate, with a variable dielectric permittivity and conducting electrodes disposed on said substrate,
characterized in that it comprises the steps of: -
disposing the ferroelectric substrate and the electrodes such that the device comprises at least two sections or parts, providing for voltage application to the sections or parts such that a different electric field strength is generated for each of the sections or parts of the device, or that a substantially a continuously varying electric field is generated, for controlling the slope (dC/dV) of the voltage dependence of the capacitance. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
-
Specification