Output control method of radio communication module, manufacturing method of radio communication module and output control unit of radio communication module
An output control method for adjusting an output of a radio communication module includes a temperature adjustment step, a transmission step, a feedback control step, a measurement step, and an output control step. The temperature adjustment step sets a temperature of the radio communication module to a predetermined set temperature by a temperature adjusting mechanism. The transmission step has a first antenna transmit a radio signal by sending a transmission signal of a predetermined frequency to the radio communication module. The feedback control step controls an output of the transmission signal based on a comparative result between a power value obtained by detecting the transmission signal and a predetermined threshold value of power. The measurement step receives the radio signal by a second antenna, and measures an equivalent isotropic radiated power of the radio signal. The output control step adjusts an output of the transmission signal based on the equivalent isotropic radiated power measured in the measurement step.
1 . An output control method for adjusting an output of a radio communication module including a first antenna comprising:
setting a temperature of the radio communication module to a predetermined set temperature by a temperature adjustor that adjusts the temperature of the radio communication module,
having the first antenna transmit a radio signal by sending a transmission signal of a predetermined frequency in the radio communication module,
controlling an output of the transmission signal based on a comparative result between a power value obtained by detecting the transmission signal and a predetermined threshold value of power,
receiving the radio signal by a second antenna that is capable of radio communicating with the first antenna, and measuring an equivalent isotropic radiated power of the radio signal, and
adjusting an output of the transmission signal based on the measured equivalent isotropic radiated power, wherein
a first gain value is calculated based on a difference between the power value at a first temperature and the threshold value, and a second gain value is calculated based on a difference between the power value at a second temperature which varies with the first temperature and the threshold value, and
when adjusting the output of the transmission signal, the threshold value is changed according to a comparative result of the first gain value and the second gain value.
2 . The output control method of the radio communication module according to claim 1 , wherein
when adjusting the output of the transmission signal, the threshold value is changed based on a judgement result of whether the equivalent isotropic radiated power is within a predetermined range or not.
3 . The output control method of the radio communication module according to claim 1 , wherein
at each set temperature which includes the first temperature and the second temperature, an output of the transmission signal is adjusted.
4 . A manufacturing method of a radio communication module comprising:
providing a memory that records information in the radio communication module, and
recording an appropriate threshold value that adjusted based on the output control method of the radio communication module according to claim 2 .
5 . An output controlling circuitry for adjusting an output of a radio communication module including a first antenna comprising:
a temperature adjustor configured to adjust a temperature of the radio communication module,
a signal setting circuitry configured to have the first antenna transmit a radio signal by sending a transmission signal of a predetermined frequency in the radio communication module,
an ALC controlling circuitry configured to control an output of the transmission signal based on a comparative result between a power value obtained by detecting the transmission signal and a predetermined threshold value of power,
a second antenna that is capable of radio communicating with the first antenna,
a measurement circuitry configured to measure an equivalent isotropic radiated power of the radio signal received by the second antenna, and
an output judgement circuitry configured to adjust an output of the transmission signal based on the equivalent isotropic radiated power measured in the measurement unit, wherein
a first gain value is calculated based on a difference between the power value at a first temperature and the threshold value, and a second gain value is calculated based on a difference between the power value at a second temperature which varies with the first temperature and the threshold value, and
when adjusting the output of the transmission signal, the threshold value is changed according to a comparative result of the first gain value and the second gain value.