Bidirectional Amplifier Matching Network for Low-Loss ESD Protection
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Solution Overview
Problem
Current computer systems face challenges in efficiently transmitting and receiving data over wireless networks due to large circuit area and signal loss at millimeter frequencies, primarily caused by the use of transmit/receive switches and shared phase shifter circuits.
Innovation Solution
The implementation of a transceiver circuit that employs matching networks to inductively couple transmitter and receiver circuits to a bidirectional port, eliminating the need for switches and minimizing signal degradation by using series and shunt matching networks to manage impedance matching and energy dissipation during transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmit/receive switches and shared phase shifter circuits are used in transceiver circuits, then data transmission and reception can be achieved, but circuit area increases and signal loss occurs at millimeter frequencies
Solution Approach 1:
The patent merges the transmit and receive signal paths by using a single bidirectional port and shared matching networks for both transmission and reception operations. The transmitter and receiver circuits share common impedance matching networks (first and second matching networks) that are coupled to a bidirectional port, eliminating the need for separate switches and phase shifters for each direction, thereby reducing overall circuit area while maintaining full-duplex or half-duplex communication capability.
2Productivity
If transmit/receive switches and shared phase shifter circuits are used in transceiver circuits, then data transmission and reception can be achieved, but signal loss increases at millimeter frequencies
Solution Approach 1:
The patent employs asymmetric impedance matching networks tailored for specific frequency ranges. The first matching network is optimized for millimeter wave frequencies with inductive coupling to minimize signal loss at these high frequencies, while the second matching network handles other frequency ranges. This asymmetric design allows each matching network to be optimally tuned for its designated frequency band, minimizing overall signal loss across the operating spectrum.
3Area of stationary object
If matching networks are used to inductively couple transmitter and receiver circuits to a bidirectional port, then circuit area is reduced and signal loss is minimized, but electrostatic discharge protection is required
Solution Approach 1:
The patent incorporates electrostatic discharge protection mechanisms into the matching networks before ESD events can damage sensitive transmitter and receiver circuits. The matching networks are designed with ESD-resistant components and configurations that can withstand voltage spikes and discharge events, providing beforehand cushioning against harmful electrostatic effects. This allows the compact transceiver design to maintain robustness against environmental electrical stressors.
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 approach reduces the overall transceiver assembly area, minimizes signal loss, and provides effective electrostatic discharge protection, enhancing data transmission and reception efficiency while maintaining a compact design.
Implementation Method 1
A first matching network coupled to a receiver circuit and transmitter circuit included in the transceiver circuit is configured to couple an output of the receiver circuit to ground in response to an activation of a transmit mode and inductively couple a transmission signal to an input of the transmitter circuit
Data Source
AI summary
A transceiver circuit that includes a receiver and transmitter circuits may send and receive data signals using an antenna. The transceiver circuit may be coupled to the antenna and other circuits using multiple impedance matching networks configured to match input and output impedance values of the receiver and transmitter circuits to the antenna and other circuits. The impedance matching networks may selectively couple and decouple different ports of the receiver and transmitter circuits to other circuit nodes based on whether the transceiver is operating in transmit or receive mode.