For the Gali-84+ Amp see below
J1, J2: SMA FEMALE SOCKETS
J3: 2-PIN MTA PCB PLUG 3.96mm
R1, R2: 56 OHM SMD RESISTORS 1206 SIZE (SUITED FOR ERA-5SM, FOR DIFFERENT ERA-SERIES AMP MMIC PLEASE CONSULT DATASHEET)
C1,C2,C4,C5: 100nF SMD CAPACITOR 1206 SIZE
C3: 10 uF/25...35V TANTALUM CAP
ORDERS (EUR 14.12)
A DIY KIT consisting of:
One ADCH-80+ special inductor,
One ERA-5SM MMIC Amplifier
Two SMA connectors and one MTA 2-pin plug and socket
including One gold-plated high-quality FR4 PCB is available.
The prices do not include 24% Greek VAT applicable only to individual buyers from European Union.
The shipping is with registered mail and tracking (your signature is required on delivery) and is not included in the price. We usually ship the next day and it takes about a week to 10 days for USA or Australia, less than a week for Europe.
Fig. 4 - S11 (input VSWR) curve of this PCB module with an ERA-5SM chip, from 1 MHZ to 1.5 GHZ.
Fig. 5 - S22 (output VSWR) curve of this PCB module with an ERA-5SM chip, from 1 MHZ to 1.5 GHZ.
Fig. 2 - S21 (gain) curve of this PCB module with an ERA-5SM chip from 1 MHZ to 1.3 GHZ.
Fig. 3 - S21 (gain) curve of this PCB module with an ERA-5SM chip, from 1 GHZ to 3 GHZ. It shows the PCB limitations mostly and not of the MMIC itself as the gain drops while the frequency increases.
Fig. 1 - The schematic diagram of the RF amplifier. Please note that the DC voltage can be lower or higher and if so, the values of the resistors R1 and R2 should be altered.
Here is a small (45 x 18 mm) PCB made for placing a few components and an MMIC of the Mini-Circuits ERA series to quickly produce a general purpose amplifier. Study the ERA series datasheets for noise figure, gain, output power and the other characteristics and choose the chip that suits you most. The following S-parameters network analyzer plots were taken with an ERA-5SM. To make the PCB easily reproducible, the Mini-Circuits special inductor ADCH-80 has been used. The biasing resistor has been split in two series resistors to divide power dissipation and keep each resistor's temperature lower. The PCB has provisions for SMA connectors for the RF input and output signals and for an MTA 2-pin connector for applying DC power.
Copyright © Makis Katsouris, SV1AFN. All Rights Reserved.