Radio frequency switch apparatus with improved harmonic attenuation characteristics
First Claim
1. A radio frequency (RF) switch apparatus comprising:
- a signal input terminal;
a signal output terminal;
a first transistor comprising a first input terminal connected to the signal input terminal, a first output terminal connected to the signal output terminal, a first gate terminal, and a first body terminal, wherein one of the first input terminal and the first output terminal is a source terminal and another one of the first input terminal and the first output terminal is a drain terminal;
a first capacitor circuit connected between the first input terminal and the first body terminal; and
a second capacitor circuit connected between the first body terminal and the first output terminal;
wherein a first capacitance of the first capacitor circuit is greater than a second capacitance of the second capacitor circuit.
1 Assignment
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Accused Products
Abstract
A radio frequency (RF) switch apparatus includes a signal input terminal; a signal output terminal; a first transistor including a first input terminal connected to the signal input terminal, a first output terminal connected to the signal output terminal, a first gate terminal, and a first body terminal, wherein one of the first input terminal and the first output terminal is a source terminal and another one of the first input terminal and the first output terminal is a drain terminal; a first capacitor circuit connected between the first input terminal and the first body terminal; and a second capacitor circuit connected between the first body terminal and the first output terminal; wherein a first capacitance of the first capacitor circuit is greater than a second capacitance of the second capacitor circuit.
7 Citations
20 Claims
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1. A radio frequency (RF) switch apparatus comprising:
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a signal input terminal; a signal output terminal; a first transistor comprising a first input terminal connected to the signal input terminal, a first output terminal connected to the signal output terminal, a first gate terminal, and a first body terminal, wherein one of the first input terminal and the first output terminal is a source terminal and another one of the first input terminal and the first output terminal is a drain terminal; a first capacitor circuit connected between the first input terminal and the first body terminal; and a second capacitor circuit connected between the first body terminal and the first output terminal; wherein a first capacitance of the first capacitor circuit is greater than a second capacitance of the second capacitor circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A radio frequency (RF) switch apparatus comprising:
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a signal input terminal; a signal output terminal; and first to n-th switches connected in series between the signal input terminal and the signal output terminal, where n is a natural number of two or more; wherein the first switch comprises; a first transistor comprising a first input terminal connected to the signal input terminal, a first output terminal, a first gate terminal, and a first body terminal, wherein one of the first input terminal and the first output terminal is a source terminal and another one of the first input terminal and the first output terminal is a drain terminal; a first capacitor circuit connected between the first input terminal and the first body terminal; and a second capacitor circuit connected between the first body terminal and the first output terminal; and a first capacitance of the first capacitor circuit of the first switch is greater than a second capacitance of the second capacitor circuit of the first switch. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A radio frequency (RF) switch apparatus comprising:
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a signal input terminal; a signal output terminal; a transistor comprising an input terminal connected to the signal input terminal, an output terminal connected to the signal output terminal, a gate terminal, and a body terminal, wherein one of the input terminal and the output terminal is a source terminal and another one of the input terminal and the output terminal is a drain terminal; and a capacitor connected between the input terminal and the body terminal and having a capacitance that causes a difference between a gate leakage current of the transistor and a body leakage current of the transistor to occur at substantially a zero crossing point of an RF signal applied to the signal input terminal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification