PCBA Consumer Electronics Signal Booster Cellular SMT Printed Circuit Board Assembly

PCBA  Images

About TECircuit

Found: TECircuit has been operating since 2004.

Location: An electronics manufacturing service(EMS) provider located in Shenzhen China.

Item: Customizable EMS PCB, offers a full range of one-stop shop services.

Service: Printed Circuit Board (PCB)and Printed Circuit Board Assembly(PCBA), Flexible Printed Circuit Board(FPC), Components Sourcing, Box-Building, Testing.

Quality Assurance: UL,ISO 9001, ISO 14001, ISO 13485, ITAF 16949 andcomplied with ROHS and REACH.

Factory Pictures:
Company's own plant : 50,000 sqm; Employees : 930+; Monthly production capacity : 100,000 m2

PCBA  Applications

• Residential Coverage Enhancement: The PCBA amplifies weak outdoor cellular signals captured by an external antenna and re-broadcasts them indoors, eliminating dead zones and ensuring reliable call quality and data connectivity throughout homes and apartments.

• In-Vehicle Signal Boosting for Mobile Connectivity: Used in cars, trucks, and RVs to improve signal strength for both drivers and passengers. The PCBA manages amplification while the vehicle is in motion, supporting hands-free calls and mobile data access on highways and in rural areas.

• Rural and Remote Area Connectivity: Provides a critical link in areas with distant cell towers. The PCBA, paired with high-gain directional antennas, can pull in faint signals over long distances and amplify them to service a farmhouse, cabin, or remote worksite.

• Commercial Building and Office Signal Distribution: Solves indoor coverage problems in large structures where materials like concrete and steel block signals. The PCBA in a distributed antenna system (DAS) amplifies and evenly distributes signal across multiple floors, supporting employee and customer devices.

• Public Safety and Emergency Communication Reinforcement: Deployed in critical locations like hospitals, command centers, or underground facilities to ensure that first responders’ and emergency personnel's cellular devices maintain a strong, reliable connection during crises.

• Small Business and Retail Customer Experience: Ensures that customers in shops, cafes, and small offices have strong signal for mobile payments, browsing, and calls, directly improving customer satisfaction and operational efficiency.

• Fleet Management and Asset Tracking Reliability: Enhances the signal for IoT devices, trackers, and telematics systems in vehicles and shipping containers, ensuring continuous data transmission for logistics and fleet management operations.

PCBA Features 

1. Dual-Amplifier Chain (Downlink/Uplink): The PCBA contains two independent, high-linear power amplifier chains. The Downlink chain amplifies the signal from the cell tower to your device, while the Uplink chain amplifies the signal from your device back to the tower, maintaining two-way communication balance.

2. Duplexer and Band-Pass Filter Array: Integrates a duplexer to allow the simultaneous transmission and reception of signals on a single antenna without interference. An array of precise band-pass filters isolates the target cellular frequencies (e.g., 700MHz, 1900MHz) and blocks out-of-band interference and noise.

3. Automatic Gain Control (AGC) and Oscillation Detection Circuitry: Features sophisticated AGC circuits that monitor output power and dynamically adjust amplification in real-time to prevent over-amplification (which can cause interference) and maintain stability. Oscillation detection circuits shut down the amplifier if feedback loops are detected, a critical safety feature.

4. Multi-Band and Carrier Aggregation Support: Advanced PCBAs support multiple frequency bands concurrently and may implement carrier aggregation technology at the RF level. This allows the booster to combine channels from different bands to maximize data throughput for 4G LTE and 5G signals.

5. Advanced Thermal Management and Power Regulation: The high-power amplifiers generate significant heat. The PCBA is designed with thermal pads/vias and interfaces for heat sinks or fans. A robust Power Management IC (PMIC) delivers clean, stable, high-current power to the RF components while managing overall efficiency.

6. Status Monitoring and User Interface: Includes a simple microcontroller and LED driver circuits to provide visual status indicators (e.g., power, signal strength, alarm conditions). Some models add Ethernet or Wi-Fi connectivity for remote web-based monitoring and configuration of the PCBA.

7. Low-Noise Amplifier (LNA) at Receiver Front-End: The initial stage of the downlink chain uses a specialized LNA to boost the very weak incoming signal from the donor antenna while adding minimal electronic noise of its own, which is crucial for preserving signal quality.

FAQ

​PCB & PCBA  Description​

PCB Assembly OEM Service

Electronic Components Material Purchasing

Bare PCB Fabrication

Cable, Wire-harness Assembly, Sheet Metal, Electrical Cabinet Assembly Service

PCB Assembly Service: SMT, BGA, DIP

PCBA test: AOI, In-Circuit Test (ICT), Functioal Test (FCT)

Conformal Coating Service

Prototyping and Mass Production

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PCBA ODM service

PCB Layout, PCBA Design According To Your Idea

PCBA Copy/Clone

Digital Circuit Design / Analog Circuit Design/ lRF Design /Embedded Software Design

Firmware and Microcode Programming Windows Application (GUI) Programming/Windows Device Driver (WDM) Programming

Embedded User Interface Design / lSystem Hardware Design

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