RF Transceiver Frequency Multiplier Circuit for Radar
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Solution Overview
Problem
Existing RF transceiver architectures for high-frequency applications, such as radar systems, are costly, bulky, and require complex tuning, especially when operating with high-frequency signals like 10 GHz, and lack efficient solutions for reducing size and weight while maintaining performance.
Innovation Solution
The proposed RF transceiver architecture includes a signal generator, frequency multiplier circuit, receiver circuit, transmitter circuit, and switching device, which generates and upconverts signals by frequency multiplication, allowing for cost-effective, compact, and tunable operation by employing a single local oscillator and chain of frequency multipliers, reducing the need for multiple up-converters and off-gimbal electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-frequency signals (10 GHz) are used in radar systems, then the transceiver can support advanced radar modes, but the system becomes costly, bulky, and requires complex tuning
Solution Approach 1:
The patent changes the operating frequency parameter from fixed high-frequency (10 GHz) to variable frequency operation. By using a frequency multiplier circuit that can operate at different frequencies and multiply them to achieve the required high-frequency output, the system adapts to different radar modes without requiring complex tuning mechanisms. This parameter change allows a single device to support multiple radar modes across different frequency ranges.
Solution Approach 2:
The patent creates a universal transceiver architecture that can support multiple radar modes through a single device. The frequency multiplier circuit serves multiple functions by being able to operate at different frequencies and provide frequency multiplication for various radar applications. This multi-functional design eliminates the need for separate dedicated circuits for each radar mode, reducing overall system complexity while maintaining versatility.
2Adaptability or versatility
If high-frequency signals (10 GHz) are used in radar systems, then the transceiver can support advanced radar modes, but the system becomes costly and bulky
Solution Approach 1:
The patent merges multiple functions into a single integrated transceiver unit. By combining the frequency multiplier circuit with the transceiver electronics and using a single local oscillator signal that is multiplied to provide multiple frequency outputs, the design consolidates what would traditionally require separate dedicated circuits for each radar mode. This merging reduces the overall size and weight of the transceiver while maintaining the capability to support multiple radar modes.
Solution Approach 2:
The frequency multiplier circuit is designed as a universal component that can serve multiple radar applications. Instead of having separate heavy-duty circuits for each radar mode, a single multi-functional frequency multiplier handles all frequency generation requirements. This universality significantly reduces the weight and bulk of the overall transceiver system while maintaining support for advanced radar modes.
3Reliability
If multiple up-converters and off-gimbal electronics are used, then high-frequency performance is achieved, but the device becomes costly and complex
Solution Approach 1:
The patent changes the approach to high-frequency signal generation by using frequency multiplication rather than multiple separate up-converters. A single local oscillator signal is multiplied by a frequency multiplier circuit to generate the required high-frequency outputs. This parameter change in the signal generation method reduces circuit complexity while maintaining high-frequency performance, as frequency multiplication is a more efficient approach than using multiple independent up-converters.
Solution Approach 2:
The patent extracts and eliminates the need for off-gimbal electronics and multiple up-converters from the traditional high-frequency transceiver design. By using frequency multiplication, the design removes these complex components while still achieving high-frequency operation. The frequency multiplier circuit directly generates the high-frequency signals without requiring the additional off-gimbal electronics that would otherwise be necessary, thereby simplifying the overall device architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This architecture enables efficient transmission and reception of RF signals across multiple radar modes with reduced size, weight, and cost, supporting applications like Doppler and synthetic aperture radar without additional tuning requirements, while maintaining high-frequency performance.
Implementation Method 1
The frequency multiplier circuit is configured to upconvert the output of the signal generator by frequency multiplication
Data Source
AI summary
Systems and methods are disclosed for transmitting and receiving RF signals. An exemplary RF transceiver includes a signal generator, a frequency multiplier circuit, a receiver circuit, a transmitter circuit, and a switching device. The signal generator is configured to output a first signal and a second signal. The first signal comprises a local oscillator signal, and a frequency of the second signal is derived from a frequency of the first signal. The frequency multiplier circuit is configured to upconvert the output of the signal generator by frequency multiplication. The receiver circuit is configured to process a received signal using an upconverted first signal, and the transmitter circuit is configured to provide an upconverted second signal to a transmitter channel. The switching device is configured to provide the upconverted first signal to the receiver circuit and the upconverted second signal to the transmitter circuit.