Wide-Range LO Generator With Dynamic Power Control
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Solution Overview
Problem
Wireless communication apparatuses face challenges in supporting wideband communication while minimizing power consumption, particularly in portable terminals where transceivers need to process signals with a wide range of frequencies efficiently and effectively.
Innovation Solution
A local oscillator (LO) generator is designed with an input buffer, frequency dividing circuit, and output buffer, where each component receives independent power voltage, and a controller adjusts the frequency and power voltage based on the carrier frequency to optimize LO signal generation and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transceiver supports wideband communication with a wide range of frequencies, then the frequency range of LO signals is improved, but the power consumption increases
Solution Approach 1:
The LO generator is divided into multiple independent components (input buffer, frequency dividing circuit, output buffer), each capable of independent power control. This segmentation allows selective powering of only the necessary components for the current frequency range, reducing overall power consumption while maintaining wideband support capability.
Solution Approach 2:
The power voltage supplied to each component is dynamically adjusted based on the required frequency range. The controller selectively activates or deactivates power supply to specific components depending on whether low-frequency or high-frequency operation is needed, enabling adaptive power management that matches actual operational requirements.
2Adaptability or versatility
If the transceiver processes signals with a wide range of frequencies, then the communication standard compatibility is improved, but the device complexity increases
Solution Approach 1:
The LO generator components are designed to perform multiple functions across different frequency ranges. The same input buffer, frequency dividing circuit, and output buffer can operate together or independently to support both low-frequency and high-frequency communication standards, eliminating the need for separate dedicated circuits for each standard.
Solution Approach 2:
The transceiver dynamically reconfigures which components are active based on the required communication standard. The controller adjusts the operational state of each component in real-time, allowing a single unified structure to adapt to different frequency requirements without physical reconfiguration or additional hardware.
Data Source
AI summary
A local oscillator generator (LO generator) may be configured to transmit an LO signal to a mixer. The LO generator may include an input buffer configured to generate a first internal oscillator signal based on the input oscillator signal. The LO generator may include a frequency dividing circuit configured to generate a second internal oscillator signal based on dividing a frequency of the first internal oscillator signal. The LO generator may include an output buffer configured to generate the LO signal based on the second internal oscillator signal. The input buffer and the frequency dividing circuit may each be configured to receive a power voltage independently of the output buffer.