Gateless switch with capacitively-coupled contacts
First Claim
Patent Images
1. A switch comprising:
- a conducting channel;
an input contact to the conducting channel;
an output contact to the conducting channel, wherein the input contact and the output contact form opposing sides of an input-output region, and wherein at least one of the input contact or the output contact is capacitively coupled to the conducting channel; and
at least one control contact located outside of the input-output region, wherein the at least one control contact includes a first control contact located adjacent to the input contact and a second control contact located adjacent to the output contact.
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Abstract
A switch includes an input contact and an output contact to a conducting channel. At least one of the input and output contacts is capacitively coupled to the conducting channel. A control contact is located outside of a region between the input and output contacts, and can be used to adjust the switch between on and off operating states. The switch can be implemented as a radio frequency switch in a circuit.
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Citations
20 Claims
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1. A switch comprising:
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a conducting channel; an input contact to the conducting channel; an output contact to the conducting channel, wherein the input contact and the output contact form opposing sides of an input-output region, and wherein at least one of the input contact or the output contact is capacitively coupled to the conducting channel; and at least one control contact located outside of the input-output region, wherein the at least one control contact includes a first control contact located adjacent to the input contact and a second control contact located adjacent to the output contact. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A switch comprising:
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a conducting channel; an input contact to the conducting channel; an output contact to the conducting channel, wherein the input contact and the output contact form opposing sides of an input-output region, and wherein at least one of the input contact or the output contact is capacitively coupled to the conducting channel; an insulating layer located in the input-output region, wherein the insulating layer is electrically connected to the input contact and the output contact; at least one control contact located outside of the input-output region; and a second insulating layer located between the input contact and one of the at least one control contact and a third insulating layer located between the output contact and another one of the at least one control contact.
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11. A switch comprising:
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a conducting channel; an input contact to the conducting channel; an output contact to the conducting channel, wherein the input contact and the output contact form opposing sides of an input-output region, and wherein at least one of the input contact or the output contact is capacitively coupled to the conducting channel; at least one control contact located outside of the input-output region; and a second conducting channel, wherein the input contact, the output contact and the at least one control contact are coupled to the second conducting channel, and wherein at least one of the input contact or the output contact is capacitively coupled to the second conducting channel.
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12. A circuit comprising:
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a radio frequency (RF) switch including; a conducting channel; an input contact to the conducting channel; an output contact to the conducting channel, wherein the input contact and the output contact form opposing sides of an input-output region, and wherein at least one of the input contact or the output contact is capacitively coupled to the conducting channel; and at least one control contact located outside of the input-output region, wherein the at least one control contact is an ohmic contact to the conducting channel; a RF source electrically connected to the input contact; a RF output electrically connected to the output contact; and a RF control circuit electrically connected to the at least one control contact. - View Dependent Claims (13, 14, 15, 16)
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17. A switch comprising:
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a barrier layer comprising a wide band gap; and a buffer layer comprising a band gap narrower than the barrier layer, wherein a conducting channel is formed at an interface of the barrier layer and the buffer layer, and wherein the conducting channel is doped with impurities; an input contact to the conducting channel; an output contact to the conducting channel, wherein the input contact and the output contact form opposing sides of an input-output region, wherein the input contact and the output contact are located over the barrier layer, and wherein the input contact and the output contact are capacitively coupled to the conducting channel; and at least one control contact located outside of the input-output region. - View Dependent Claims (18, 19, 20)
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Specification