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Std edition Coax power supply, fixed voltage (SMD, ENCLOSURE)

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License: MIT

Published Time: 2020-09-29 00:44:34
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Description

EasyEDA project for easy and quick build "Coax power supply, fixed voltage" module used for powering up active antennas and amplifiers through a coaxial cable. Project includes schematic and PCB prepared for setting up into aluminum enclosure with dimensions 80 x 50 x 20 mm with SMA connectors. Version for mounting SMD components.

Current development progress:

Progress Progress Bug report

Input voltage: USB type B, DC 5 V;
Frequency range: 10 MHz - 10 GHz (according to the datasheet on TCBT-14+, upper frequency may be unattainable with FR-4 PCB material);
Output voltage: DC +3.3 V (can be changed by replacing the linear regulator LP5907MFX-3.3);
Maximum output current: 200 mA;
RF connector: SMA;
Feed line: 50 Ohm coaxial cable;
Used PCB Material: FR-4;
PCB thickness: 1.6 mm;
PCB copper weight: 1 oz;

Used only to power receiving antennas or amplifiers! Using the device in a transmitting radio channel can damage the TCBT-14+ (maximum allowable power is 30 dBm).

EasySDR project page at GitHub
Buy SDR receiver: RTL-SDR.COM
Buy TCBT-14+ Bias Tee: Mini-Circuits TCBT-14+
Order PCB manufacturing using PCBWay service

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design drawing
schematic diagram
1 /
PCB
1 /
  • Coax power supply, fixed voltage (SMD, ENCLOSURE): Main module (TCBT-14+)

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  • Coax power supply, fixed voltage (SMD, ENCLOSURE): Main module

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ID Name Designator Footprint Quantity BOM_Manufacturer Part BOM_Supplier BOM_Manufacturer BOM_Supplier Part
1 100n C4,C5,C2 0805 3 0805B104J250 LCSC Walsin Tech Corp C163184
2 1M R3 0805 1 RC0805FR-071ML LCSC YAGEO C107700
3 100R R1 0805 1 RTT051000FTP LCSC RALEC C103902
4 4.7u C1,C3 0805 2 CL21A475KOFNNNE LCSC Samsung Electro-Mechanics C1746
5 3k R2 0805 1 RTT05302JTP LCSC RALEC C104211
6 PTC, 750mA, 6V F1 0805 1 MF-PSMF075X-2 LCSC BOURNS C116173
7 ACH32C-104-T001 L1 FILTER-SMD_3P-L3.2-W1.6_ACH32C 1 ACH32C-104-T001 LCSC TDK C20540
8 TCBT-14+ U2 GU1414 (SPCB) WITHOUT MASK 1 TCBT-14+ Mini-Circuits Mini-Circuits TCBT-14+
9 SMA RF OUT J2 SMA-EDGE 1 ANKX01.0093 LCSC RFsister C129604
10 SMA ANTENNA/LNA J1 SMA-EDGE 1 ANKX01.0093 LCSC RFsister C129604
11 MTS-101/102-C3 SW1 MTS-102-C3 1 NULL Ebay NULL MTS-102-C3
12 LP5907MFX-3.3/NOPB U1 SOT-23-5 1 LP5907MFX-3.3/NOPB LCSC Texas Instruments C80670
13 GREEN LED1 LED-0805 1 NCD0805G1 LCSC Foshan NationStar Optoelectronics C84260
14 USB-B USB1 USB TYPE B 1 C46392 LCSC Jing Extension of the Electronic Co. C46392

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TCBT-14+-Bias-Tee-Datasheet.pdf

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