OVERPOWER PROTECTION CIRCUIT
First Claim
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1. A power protection apparatus, comprising:
- a PIN diode circuit connected to a signal path for transporting RF signals between a first RF device and a second RF device, the PIN diode circuit comprising first and second PIN diodes having opposite polarities; and
a solid state limiter configured to detect an overpower condition of an RF signal input from the second RF device on the signal path and to trigger the PIN diode circuit in response to the detected overpower condition, limiting the overpower condition.
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Abstract
A power protection apparatus includes a PIN diode circuit and a solid state limiter. The PIN diode circuit is connected to a signal path for transporting RF signals between a first RF device and a second RF device, the PIN diode circuit including first and second PIN diodes having opposite polarities. The solid state limiter is configured to detect an overpower condition of an RF signal input from the second RF device on the signal path, and to trigger the PIN diode circuit in response to the detected overpower condition, limiting the overpower condition.
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Citations
20 Claims
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1. A power protection apparatus, comprising:
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a PIN diode circuit connected to a signal path for transporting RF signals between a first RF device and a second RF device, the PIN diode circuit comprising first and second PIN diodes having opposite polarities; and a solid state limiter configured to detect an overpower condition of an RF signal input from the second RF device on the signal path and to trigger the PIN diode circuit in response to the detected overpower condition, limiting the overpower condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A power protection apparatus for protecting a radio frequency (RF) test device from an overpower condition, caused by an RF signal input from a device under test (DUT) on a signal path connected to the RF test devise, the power protection apparatus comprising:
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a first PIN diode comprising an anode connected to the signal path configured to receive the RF signal from the DUT, and a cathode connected to ground; a second PIN diode comprising a cathode connected to the signal path between the RF test device and the first PIN diode and an anode connected to ground; and a solid state limiter connected to the signal path between the RF test device and the second PIN diode, the solid state limiter being configured to detect the overpower condition of the RF signal input from the DUT and to trigger the first and second PIN diodes to short circuit the RF signal. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A power protection apparatus for protecting a radio frequency (RF) test device from an overpower condition of an RF signal from a device under test (DUT), the power protection apparatus comprising:
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a first PIN diode comprising an anode connected to a signal path at a first node for receiving the RF signal from the DUT, and a cathode connected to a first PIN diode bias, the signal path connecting the RF test device and the DUT; a second PIN diode comprising a cathode connected to the signal path at a second node between the RF test device and the first node, and an anode connected to a second PIN diode bias; a first fast acting gallium arsenide (GaAs) diode comprising a cathode connected to the signal path at a third node between the RF test device and the second node, and an anode connected to a first GaAs diode bias; and a second fast acting GaAs diode comprising an anode connected to the signal path at the third node, and a cathode connected to a second GaAs diode bias, wherein the first and second PIN diodes are forward biased by the first and second PIN diode biases, respectively, in response to threshold current drawn by the first and second GaAs diodes indicating an overpower condition of the RF signal, in order to short circuit the RF signal. - View Dependent Claims (20)
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Specification