Wireless Transmitters with Temperature Gain Compensation
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United States of America Patent
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Issued Date -
Jun 28, 2007
app pub date -
Dec 26, 2006
filing date -
Dec 28, 2005
priority date (Note) -
Abandoned
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Abstract
A wireless transmitter with temperature gain compensation includes a temperature sensor, a mixer, a power amplifier, a matching circuit, and an antenna. The mixer includes a mixer circuit and a gain compensation circuit. The gain compensation circuit includes a plurality of compensation units in parallel. Each compensation unit includes a resistor and a switch for turning on or off the switch to adjust the mixer's gain according to the sensed temperature of the temperature sensor. The wireless transmitter further includes a voltage gain control amplifier for choosing the output power of the transmitter.
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