18003026. TRANSMITTER CIRCUIT simplified abstract (Telefonaktiebolaget LM Ericsson (publ))
Contents
TRANSMITTER CIRCUIT
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
Christian Elgaard of Lund (SE)
[[:Category:Henrik Sj�land of Lund (SE)|Henrik Sj�land of Lund (SE)]][[Category:Henrik Sj�land of Lund (SE)]]
TRANSMITTER CIRCUIT - A simplified explanation of the abstract
This abstract first appeared for US patent application 18003026 titled 'TRANSMITTER CIRCUIT
Simplified Explanation
The abstract describes a patent application for a transmitter circuit that receives an analog input signal and a local oscillator (LO) signal. It includes a mixer circuit, a PA circuit, a control circuit, a phase-control circuit, and a gain-control circuit.
- The mixer circuit combines the analog input signal with the LO signal.
- The PA circuit amplifies the mixed signal.
- The control circuit generates a phase-control signal and a gain-control signal based on the envelope of the analog input signal.
- The phase-control circuit adjusts the LO signal based on the phase-control signal and supplies it to the mixer circuit.
- The gain-control circuit adjusts the gain of the transmitter circuit based on the gain-control signal.
Potential applications of this technology:
- Wireless communication systems
- Radio frequency (RF) transmitters
- Signal processing devices
Problems solved by this technology:
- Efficient mixing and amplification of analog input signals
- Precise control of phase and gain in the transmitter circuit
Benefits of this technology:
- Improved signal quality and accuracy
- Enhanced efficiency in wireless communication systems
- Better control over phase and gain adjustments
Original Abstract Submitted
A transmitter circuit has a signal input for receiving an analog input signal and a local oscillator (LO) input for receiving an LO signal. A mixer circuit has a first input, a second input, and an output. The second input of the mixer circuit is connected to a signal input of the transmitter circuit. A PA circuit has an input connected to the output of the mixer circuit, and an output. A control circuit generates a phase-control signal and a gain-control signal in response to an envelope of the analog input signal. A phase-control circuit generates a phase-adjusted LO signal in response to the LO signal and the phase-control signal and supplies the phase-adjusted LO signal to the first input of the mixer circuit. A gain-control circuit controls a gain of the transmitter circuit in response to the gain-control signal.
