Transmission output circuit and mobile communication terminal
First Claim
1. A transmission output circuit comprising:
- gain control amplification means for varying gain of an input signal in accordance with a gain control signal;
power amplification means for amplifying power of an output signal from said gain control amplification means;
transmission power output level instruction means for specifying a target transmission power output level;
transmission power control data generation means for generating the gain control signal for performing a feed forward control of said gain control amplification means in order that an output signal level of said power amplification means becomes said target transmission power output level;
detection means for obtaining detected signal data by detecting the output signal of said power amplification means; and
judgment means for judging existence of occurrence of trouble in a transmission output system by determining whether said detected signal data from said detection means or said gain control signal are within a determined range,wherein said feed forward control is a closed loop control based on a transmission power control data form a transmission side; and
wherein said judgment means judges the existence of occurrence of trouble by determining whether present gain control signal is within a data range assumed relative to said present detecting signal data obtained from said detection means.
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Accused Products
Abstract
A transmission output circuit can always perform correct transmission power control, and can detect the abnormality of transmission power, which interferes with other users, and part troubles, which cause erroneous transmission. The transmission output circuit includes transmission power control data generation means for generating a gain control signal for performing the feed forward control of gain control amplification means in order that the output signal level of the power amplification means may be a target transmission power output level, detection means for detecting the output signal of the power amplification means to obtain detected signal data, and judgment means for judging the existence of the occurrence of trouble in the transmission output system by using the detected signal data from the detection means.
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Citations
19 Claims
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1. A transmission output circuit comprising:
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gain control amplification means for varying gain of an input signal in accordance with a gain control signal; power amplification means for amplifying power of an output signal from said gain control amplification means; transmission power output level instruction means for specifying a target transmission power output level; transmission power control data generation means for generating the gain control signal for performing a feed forward control of said gain control amplification means in order that an output signal level of said power amplification means becomes said target transmission power output level; detection means for obtaining detected signal data by detecting the output signal of said power amplification means; and judgment means for judging existence of occurrence of trouble in a transmission output system by determining whether said detected signal data from said detection means or said gain control signal are within a determined range, wherein said feed forward control is a closed loop control based on a transmission power control data form a transmission side; and wherein said judgment means judges the existence of occurrence of trouble by determining whether present gain control signal is within a data range assumed relative to said present detecting signal data obtained from said detection means. - View Dependent Claims (2, 3)
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4. A transmission output circuit comprising:
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gain control amplification means for varying gain of an input signal in accordance with a gain control signal; power amplification means for amplifying power of an output signal from said gain control amplification means; transmission power output level instruction means for specifying a target transmission power output level; transmission power control data generation means for generating the gain control signal for performing a feed forward control of said gain control amplification means in order that an output signal level of said power amplification means becomes said target transmission power output level; detection means for obtaining detected signal data by detecting the output signal of said power amplification means; judgment means for judging existence of occurrence of trouble in a transmission output system by determining whether said detected signal data from said detection means or said gain control signal are within a determined range; a transmission power control data table in which a transmission power control data for generating control voltage to be supplied to said gain control amplification means and corresponding to various values of said transmission power output level is written; power source voltage detection means for detecting the power source voltage and for supplying data of the detected power source voltage to said transmission power control data processing means; temperature detection means for detecting temperature and for supplying data of the detected temperature to said transmission power control data processing means; a transmission power control data correction table in which correction data for said transmission power control data is written while said power source voltage and said temperature being as parameters; and transmission power control data processing means for processing transmission power control data relative to said target transmission power output level while obtaining said correction data of said transmission power control data corresponding to said data for the said power source voltage and data for said temperature from said transmission power control data correction table. - View Dependent Claims (5)
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6. A transmission output circuit comprising:
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gain control amplification means for varying gain of an input signal in accordance with a gain control signal; power amplification means for performing power amplification of an output signal of said gain control amplification means; detection means for detecting an output signal of said power amplification means to obtain detected signal data; a detected signal data table in which the detected signal data corresponding to various values of said transmission power output level is written; a transmission power control data table in which transmission power control data for generating control voltages to be supplied to said gain control amplification means, the control voltages corresponding to various values of said transmission power output level, is written; detected signal data comparison means for comparing said detected signal data obtained by said detection means with said detected signal data corresponding to said target transmission power output level from said detected signal data table; and transmission power control data processing means for operating transmission power control data to said target transmission power output level on a basis of present transmission power control data from said transmission power control data table and comparison output data from said detection signal comparison means, wherein said transmission power control data processing means outputs transmission power control data relative to said target transmission power output level after applying correction processing so that the comparison output data of said detection signal data comparison means becomes equal or less than a predetermined level. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A transmission output circuit comprising:
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gain control amplification means for varying gain of an input signal in accordance with a gain control signal; power amplification means for performing power amplification of an output signal of said gain control amplification means; transmission power output level instruction means for designating target transmission power output level based on transmission power control data transmitted from an opponent to transmit; transmission power control data generation means for generating said gain control signal for carrying out a feed forward control of said gain control amplification means so that output signal level of said power amplification means becomes said target transmission power output level; detection means for obtaining detected signal data by detecting output signal from said power amplification means; first judgement means for judging whether said detected signal data from said detection means is within a range which becomes maximum transmission power specified value; second judgement means for judging whether said detected signal data from said detection means is within a range which becomes minimum transmission power specified value; and control means for ignoring transmission power control data when it is judged by said first judgement means that said detection signal data is within the range of said maximum transmission power specified value and when said transmission power control data from said transmission side is for further increasing said transmission power output level, and for ignoring transmission power control data when it is judged by said second judgement means that said detection signal data is within the range of said minimum transmission power specified value and when said transmission power control data from said transmission side is for further decreasing said transmission power output level. - View Dependent Claims (16)
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17. A mobile communication terminal comprising:
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gain control amplification means for varying gain of an input signal in accordance with a gain control signal; power amplification means for amplifying power of an output signal from said gain control amplification means; transmission power output level instruction means for specifying a target transmission power output level; transmission power control data generation means for generating the gain control signal for performing a feed forward control of said gain control amplification means in order that an output signal level of said power amplification means becomes said target transmission power output level; detection means for obtaining detected signal data by detecting the output signal of said power amplification means; judgment means for judging existence of occurrence of trouble in a transmission output system by determining whether said detected signal data from said detection means or said gain control signal are within a determined range; and means for carrying out trouble report to a user when said judgment means judges that said detection signal data from said detection means is not a value for normal operation. - View Dependent Claims (18, 19)
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Specification