RF Modulation Layout Using a Separate Choke for DC Isolation
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Solution Overview
Problem
Existing diode-tuned RF signal modulation arrays require space for circuit designs that isolate DC bias voltage from RF electromagnetic signals, leading to larger diode elements and higher costs.
Innovation Solution
The electronic device includes a substrate with a radio frequency (RF) modulation element, a control circuit, and an RF choke, where the RF choke is electrically coupled between the RF modulation element and the control circuit, and their orthographic projections on the substrate do not overlap, allowing for a smaller RF modulation element size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit design for isolating RF electromagnetic signals is integrated into the RF modulation element, then the isolation of DC bias voltage from RF signals is achieved, but the RF modulation element becomes large in size and the unit price increases
Solution Approach 1:
The patent divides the system into separate functional modules: the RF modulation element and the RF choke are physically separated and independently disposed on the substrate. This segmentation allows each component to be optimized independently, reducing the size of the RF modulation element while maintaining the isolation function through the separate RF choke component.
Solution Approach 2:
The patent extracts the RF isolation function from the RF modulation element by introducing a separate RF choke component. The RF choke is electrically coupled between the RF modulation element and the control circuit, taking out the isolation function to a separate component, thereby reducing the size and complexity of the RF modulation element itself.
2Reliability
If the circuit design for isolating RF electromagnetic signals is integrated into the RF modulation element, then the isolation of DC bias voltage from RF signals is achieved, but the unit price of the RF modulation element increases
Solution Approach 1:
By segmenting the isolation function into a separate RF choke component, the patent enables independent manufacturing and optimization of each component. This segmentation allows for more cost-effective production processes and reduces the unit price of the RF modulation element while maintaining the required isolation performance.
Solution Approach 2:
The patent extracts the expensive isolation circuitry from the RF modulation element and implements it as a separate, simpler RF choke component. This extraction reduces the manufacturing complexity and cost of the RF modulation element while achieving the same isolation effect through the dedicated RF choke component.
3Area of moving object
If the RF choke is electrically coupled between the RF modulation element and the control circuit with non-overlapping projections, then the size of the RF modulation element is reduced, but the layout complexity on the substrate increases
Solution Approach 1:
The patent utilizes the substrate plane effectively by ensuring non-overlapping projections of the RF modulation element, RF choke, and control circuit. This dimensional arrangement on the substrate plane allows for compact integration while maintaining electrical connectivity through controlled impedance traces, managing layout complexity through careful spatial planning.
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 design effectively reduces the size and cost of the electronic device by separating the RF choke from the RF modulation element, maintaining efficient RF signal modulation while minimizing component size and expense.
Implementation Method 1
an RF choke, wherein the RF choke is electrically coupled between the RF modulation element and the control circuit
Data Source
AI summary
Disclosed is an electronic device including a substrate, a radio frequency (RF) modulation element, a control circuit and a radio frequency (RF) choke. The RF modulation element, the control circuit and the RF choke are disposed on the substrate. The RF choke is electrically coupled between the RF modulation element and the control circuit. The orthographic projections of the RF modulation element, the control circuits and the RF choke on the substrate do not overlap each other.