RFIC Antenna Isolation for Confined Space Performance Verification
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Solution Overview
Problem
Existing methods for verifying the performance of wireless communication circuits in ultra-high frequency bands, such as millimeter wave, face challenges in confined spaces and often result in saturation of low noise amplifiers, making accurate performance evaluation difficult.
Innovation Solution
The proposed solution involves an electronic device with a patch antenna element and a radio frequency integrated circuit (RFIC) that includes separate communication circuits and feeding units with designated isolation, allowing for the transmission and reception of signals to be checked within a confined space without saturating the low noise amplifier, using switches and attenuators to manage signal isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the output of the transmitter path is electrically connected to the output of the receiver path to verify performance, then the verification can be performed without requiring large space, but the low noise amplifier of the receiver becomes saturated due to the large output signal
Solution Approach 1:
An isolator is introduced as an intermediary component between the transmitter path and receiver path. The isolator allows the transmitter output to be connected to the receiver input for verification while preventing the large transmitter output signal from saturating the receiver's low noise amplifier, thus enabling accurate performance verification in confined space
Solution Approach 2:
The isolator changes the signal parameter by providing directional isolation - it allows signals to pass from the transmitter to the receiver while blocking or attenuating reverse signals and preventing signal saturation, thereby modifying the signal characteristics to enable accurate verification
2Measurement precision
If a significantly large space is provided to satisfy the far-field condition for performance verification, then accurate performance measurement can be achieved, but the verification cannot be performed in confined spaces
Solution Approach 1:
The isolator acts as a mediator that enables accurate performance measurement without requiring far-field conditions. By providing signal isolation and preventing saturation, it allows verification to be performed accurately in near-field or confined space conditions
Data Source
AI summary
An electronic device is provided The electronic device includes a patch antenna element, at least one antenna including a first feeding unit electrically connected to the patch antenna element and a second feeding unit electrically connected to the patch antenna element so as to have a designated isolation for a signal that is input to the first feeding unit, a radio frequency integrated circuit (RFIC) which includes a first communication circuit including a first transmission circuit and a first reception circuit which are electrically connected to the first feeding unit, and a second communication circuit including a second transmission circuit and a second reception circuit which are electrically connected to the second feeding unit, and a processor.