Switch Matrix Board that maps 4 RF ports to 16 bidirectional RF ports, controlled via an I2C interface Ended

About the job

Product Function

Maps 4 (A) RF ports to any of 16 (B) ports, with 1 RX (B → A) and 3 TX (A → B).
Uses 31 SP4T (BGSA14GN10) and 5 high-isolation SP4T (PE424450) in a tree topology.
Controlled via I2C with three 16-bit IO expanders (MCP23017), interfacing with an external ESP32 MCU.

Performance

Isolation: ~100 dB between TX and RX, dual ground planes for RF RX.
Insertion/Return Loss: Minimal additional loss beyond switch matrix.
RF Range: 860–960 MHz, 50Ω stripline waveguides for strong isolation.

Use Environment

Indoor setup, powered by an external 3.3V ESP32-based PoE device.
Requires RF shielding and optimized PCB layout for minimal interference.

Deliverables

Full turnkey solution: design, prototyping, testing, and 20-unit manufacturing.
Includes schematics, layout, BOM, firmware configs, and performance analysis.
Quote to include cost-performance trade-offs for alternative configurations.
Product Function

Maps 4 (A) RF ports to any of 16 (B) ports, with 1 RX (B → A) and 3 TX (A → B).
Uses 31 SP4T (BGSA14GN10) and 5 high-isolation SP4T (PE424450) in a tree topology.
Controlled via I2C with three 16-bit IO expanders (MCP23017), interfacing with an external ESP32 MCU.

Performance

Isolation: ~100 dB between TX and RX, dual ground planes for RF RX.
Insertion/Return Loss: Minimal additional loss beyond switch matrix.
RF Range: 860–960 MHz, 50Ω stripline waveguides for strong isolation.

Use Environment

Indoor setup, powered by an external 3.3V ESP32-based PoE device.
Requires RF shielding and optimized PCB layout for minimal interference.

Deliverables

Full turnkey solution: design, prototyping, testing, and 20-unit manufacturing.
Includes schematics, layout, BOM, firmware configs, and performance analysis.
Quote to include cost-performance trade-offs for alternative configurations.
Product Function

Maps 4 (A) RF ports to any of 16 (B) ports, with 1 RX (B → A) and 3 TX (A → B).
Uses 31 SP4T (BGSA14GN10) and 5 high-isolation SP4T (PE424450) in a tree topology.
Controlled via I2C with three 16-bit IO expanders (MCP23017), interfacing with an external ESP32 MCU.

Performance

Isolation: ~100 dB between TX and RX, dual ground planes for RF RX.
Insertion/Return Loss: Min... read more
Product Function

Maps 4 (A) RF ports to any of 16 (B) ports, with 1 RX (B → A) and 3 TX (A → B).
Uses 31 SP4T (BGSA14GN10) and 5 high-isolation SP4T (PE424450) in a tree topology.
Controlled via I2C with three 16-bit IO expanders (MCP23017), interfacing with an external ESP32 MCU.

Performance

Isolation: ~100 dB between TX and RX, dual ground planes for RF RX.
Insertion/Return Loss: Minimal additional loss beyond switch matrix.
RF Range: 860–960 MHz, 50Ω stripline waveguides for strong isolation.

Use Environment

Indoor setup, powered by an external 3.3V ESP32-based PoE device.
Requires RF shielding and optimized PCB layout for minimal interference.

Deliverables

Full turnkey solution: design, prototyping, testing, and 20-unit manufacturing.
Includes schematics, layout, BOM, firmware configs, and performance analysis.
Quote to include cost-performance trade-offs for alternative configurations. read less
Switch Matrix Board.docx docx Mar 24, 2025

Things to know

Job location

Remote

Work location

Job skill level

Expert

Skill Level

Job rate

Open budget

Fixed-rate

Job type

Part-time

Job type

Job length

Under 1-month

Job duration

Areas of expertise

RF design

Job categories

PCB Design Services

About the client

Payment ready

Israel (07:43 pm)

Posted

Active

Job activity

7 Applicants

0 interviews in progress

6 unanswered invites

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