Transmission amplifier
AssigneeHitachi Kokusai Electric Inc.
InventorsJunichiro Yamakawa, Junya Dosaka
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Abstract
In a transmission amplifier for amplifying a signal to be transmitted, an amplifying unit is warmed efficiently when temperature is low. In a constitution in which an amplifying unit 1 amplifies a signal, temperature detecting means 4 detects temperature. Amplifying-unit-self-heating-facilitation control means 2 and 5 perform control for facilitating self-heating by the amplifying unit 1 when temperature detected by the temperature detecting means 4 is lower than a predetermined threshold value or equal to or lower than the predetermined threshold value. The amplifying-unit-self-heating-facilitation control means 2 and 5 perform, for example, bias control for the amplifying unit 1 as the control for facilitating self-heating by the amplifying unit 1.
Claims11
A transmission amplifier for amplifying a signal to be transmitted, wherein comprising:
- an amplifying unit that amplifies the signal;
- temperature detecting means that detects temperature;
- and
- amplifying-unit-self-heating-facilitation control means that performs control for facilitating self-heating by the amplifying unit when temperature detected by the temperature detecting means is lower than a predetermined threshold value or equal to or lower than the predetermined threshold value.
Dependencies are inferred from the claim text.