A.M. Signal generator having an r.f. output level control
Low power indicating circuit for a radio transmitter
Battery-powered radio communication apparatus capable of prolonging the communicable state thereof
DC decoupled radio communication system
Power amplifier for a radio frequency signal
Radio telecommunication apparatus Patent #: 5033111
ApplicationNo. 502680 filed on 04/02/1990
US Classes:455/550.1, Radiotelephone equipment detail455/116, Carrier amplitude control (e.g., voice operated on/off)455/571Power booster
ExaminersPrimary: Eisenzopf, Reinhard J.
Assistant: Faile, Andrew
Attorney, Agent or Firm
International ClassesH04B 001/38
Foreign Application Priority Data1989-04-02 JP
AbstractA radio communication apparatus comprising a modulating portion for modulating a carrier with a signal to transmit so as to produce a transmissible signal; a signal transmitting portion for transmitting the transmissible signal; a level adjusting portion for adjusting a level of the signal to transmit or a level of a control signal used for controlling the transmissible signal in accordance with digital control data supplied to the level adjusting portions; a memory for storing digital adjusting data; and a control unit for reading the digital adjusting data from the memory and supplying the level adjusting portion with the digital adjusting data read from the memory or modified digital adjusting data obtained based on the digital adjusting data read from the memory as the digital control data.