Single-pole multi-throw switch having low parasitic reactance, and an antenna incorporating the same
First Claim
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1. A broadband switch arrangement comprising:
- (a) a plurality of MEMS switches arranged on a substrate about an axis through said substrate, each MEMS switch being disposed on a common imaginary circle centered on said axis, and each MEMS switch being spaced equidistantly along the circumference of said imaginary circle, the circle having a diameter which is smaller than one half wavelength for all frequencies in a passband of said broadband switch;
(b) a conductive via in said substrate arranged parallel to and on said axis; and
(c) connections for connecting a RF port of each one of said plurality of MEMS switches with said conductive via.
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Abstract
A switch arrangement comprises a plurality of MEMS switches arranged on a substrate about, and close to, a central point, each MEMS switch being disposed on a common imaginary circle centered on the central point. Additionally, and each MEMS switch is preferably spaced equidistantly along the circumference of the imaginary circle and within one quarter wavelength of the central point for frequencies in the passband of the switch arrangement. Connections are provided for connecting a RF port of each one of the MEMS switches with the central point.
118 Citations
40 Claims
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1. A broadband switch arrangement comprising:
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(a) a plurality of MEMS switches arranged on a substrate about an axis through said substrate, each MEMS switch being disposed on a common imaginary circle centered on said axis, and each MEMS switch being spaced equidistantly along the circumference of said imaginary circle, the circle having a diameter which is smaller than one half wavelength for all frequencies in a passband of said broadband switch;
(b) a conductive via in said substrate arranged parallel to and on said axis; and
(c) connections for connecting a RF port of each one of said plurality of MEMS switches with said conductive via. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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- 12. A switch arrangement comprising a plurality of switch units, each switch unit having at least two MEMS switches coupled to a central point, the at least two MEMS switches of the switch unit being arranged to couple selectively at least two transmission line ports to said central point, and at least a third MEMS switch coupled to said central point and adapted to be connected to a central point associated with an adjacent one of said plurality of switch units.
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15. A switch arrangement comprising:
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(a) a plurality of MEMS switches arranged on a substrate about a central point, each MEMS switch being disposed on a common imaginary circle centered on said central point, said common imaginary circle having a diameter which is less than one half wavelength of frequencies in a passband of the switch arrangement; and
(b) connections for connecting a RF port of each one of said MEMS switches with said central point. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of making a switch arrangement comprising:
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(a) disposing a plurality of MEMS switches on a substrate in a circular pattern about a point, the circular pattern having a diameter which is less than a half wavelength of frequencies in a passband of the switch arrangement;
(b) disposing a plurality of RF lines disposed in a radial pattern relative to said point on said substrate; and
(c) connecting said plurality of RF strip lines to a common junction point at said point on said substrate via said plurality of MEMS switches whereby operation of a one of said plurality of MEMS switches couples a one of said plurality of RF strip lines to said common junction. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A switch arrangement comprising:
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(a) a plurality of MEMS switches arranged on a substrate about a common RF port, the RF port having a centerline and each MEMS switch being disposed spaced equidistantly from the centerline of said RF port by a distance which is less than one quarter wavelength for frequencies in a passband of the switch arrangement; and
(b) connections for connecting a RF contact of each one of said MEMS switches with said common RF port. - View Dependent Claims (39, 40)
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Specification