Radio-frequency power amplifier temperature detection circuit
A temperature detection circuit and radio frequency power technology, applied in power amplifiers, thermometers, thermometers with electrical/magnetic components directly sensitive to heat, etc. To avoid overheating damage
Inactive Publication Date: 2008-10-22
上海杰盛无线通讯设备有限公司
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Problems solved by technology
Usually, the RF power amplifier generates a lot of heat when it is working. If the heat dissipation environment is not good during operation, it will cause the chip to overheat, which may damage the chip and cause failures such as communication interruption.
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The invention relates to a temperature detection circuit of a radio-frequency power amplifier. A temperature sensor chip is arranged in the position close to the radio-frequency power amplifier; the output of the temperature sensor chip is connected with an operational amplifier; and the output of the operational amplifier is a voltage value corresponding to the temperature. The temperature detection circuit has the advantages of monitoring the working temperature of the chip in real time and avoiding the chip from being overheated and damaged; and when the working temperature excesses or approaches the upper temperature limit, the temperature detection circuit can give out alarm in time.
Description
Temperature Detection Circuit of RF Power Amplifier technical field The invention relates to a temperature detection circuit, in particular to a temperature detection circuit of a radio frequency power amplifier. Background technique Usually, the RF power amplifier generates a lot of heat when it works. If the heat dissipation environment is not good during operation, it will cause the chip to overheat, which may damage the chip and cause failures such as communication interruption. If a temperature detection circuit is added next to the chip, the working temperature of the chip can be monitored in real time, and an alarm can be issued in time when the temperature exceeds or approaches the upper limit. Contents of the invention The technical problem of the present invention is to provide a temperature detection circuit for the radio frequency power amplifier, so as to monitor the working temperature of the chip in real time and avoid the damage of the chip due to overhe...
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IPC IPC(8): G01K7/00H03F3/20
Inventor 张寅侃陈松麟
Owner 上海杰盛无线通讯设备有限公司
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