IQ Modulator
About the IQ Modulator PCB
IQ Modulator is an open source PCB design by antonjan, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 39.5 × 46 mm, with 72 components from 38 distinct parts.
Other key parts include the TRF3701, MMZ09332BT1, Si570, Orange Pi zero and MCP3421A0T-E/CH. By type, the board carries 31 capacitors, 17 resistors, 9 inductors, 5 ICs, 5 connectors and 3 transistors.
It belongs with the rf & radio, audio and science & space designs in this gallery, and the repository also holds 3 earlier revisions of it.
From the project
IQ Modulator for 2M and 70cm from I2C and ALSA PCM Audio on Orange PI Zero (Estimated TX Power 500mW)
Main components on the IQ Modulator
IQ Modulator bill of materials (BOM)
72 components, 38 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TRF3701 | VQFN-16_3x3mm_trf3701_new | U1 |
| 1 | MMZ09332BT1 | QFN-12-1EP_3x3mm_P0.5mm_EP1.65x1.65mm | U2 |
| 1 | Si570 | Oscillator_SMD_SI570_SI571_HandSoldering | U3 |
| 1 | Orange Pi zero | orangepi-zero | U4 |
| 1 | MCP3421A0T-E/CH | SOT-23-6_Handsoldering | U5 |
| 3 | BC817-40 | SOT-23 | Q1, Q2, Q3 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03_Pitch2.54mm | J1 |
| 1 | TEST_1P | Pin_Header_Straight_1x01_Pitch2.54mm | J2 |
| 1 | Audio-Jack-3 | Pin_Header_Straight_1x03_Pitch2.54mm | J3 |
| 1 | CONN_01X04 | Pin_Header_Straight_1x04_Pitch2.54mm | J4 |
| 1 | SMA Edge FM | Molex_SMA_Jack_Edge_Mount | J5 |
| 2 | 4k7 | Potentiometer_Bourns_3314G_Vertical | RV1, RV2 |
| 2 | 33nF | C_0805_HandSoldering | L1, L5 |
| 2 | 33nH | L_0805_HandSoldering | L2, L4 |
| 1 | 22nF | C_0805_HandSoldering | L3 |
| 2 | 56nH | L_0805_HandSoldering | L6, L9 |
| 2 | 110nH | L_0805_HandSoldering | L7, L8 |
| 7 | 1uF 16V | CP_Tantalum_Case-R_EIA-2012-12_Reflow | C1, C2, C3, C13, C15, C17, C20 |
| 1 | 3.3pF | C_0805_HandSoldering | C4 |
| 5 | 10uF 16V | C_0805_HandSoldering | C5, C8, C23, C25, C28 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 2200pF | C_0805_HandSoldering | C6, C7, C11, C12 |
| 2 | 1nF | C_0805_HandSoldering | C9, C14 |
| 1 | 4.7uF 16V | C_0805_HandSoldering | C10 |
| 2 | 100pF | C_0805_HandSoldering | C16, C21 |
| 1 | 27pF | C_0805_HandSoldering | C18 |
| 2 | 220pF | C_0805_HandSoldering | C19, C26 |
| 4 | 33pF | C_0805_HandSoldering | C22, C29, C30, C31 |
| 1 | 15pF | C_0805_HandSoldering | C24 |
| 1 | 100nF | C_0805_HandSoldering | C27 |
| 2 | 10k | R_0805_HandSoldering | R1, R13 |
| 4 | 1K | R_0805_HandSoldering | R2, R3, R5, R6 |
| 1 | 1k8 | R_0805_HandSoldering | R4 |
| 3 | 6k8 | R_0805_HandSoldering | R7, R8, R14 |
| 2 | 0 | R_0805_HandSoldering | R9, R12 |
| 1 | 2k2 | R_0805_HandSoldering | R10 |
| 1 | OC | R_0805_HandSoldering | R11 |
| 2 | 6k5 | R_0805_HandSoldering | R15, R16 |
| 1 | 4k7 | R_0805_HandSoldering | R17 |
IQ Modulator design files
The KiCad project lives in the antonjan/IQ_Modulator repository on GitHub; these links point at the commit this page was built from.
IQ Modulator: common questions
How big is the IQ Modulator PCB?
The IQ Modulator measures 39.5 × 46 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the IQ Modulator?
72 components, from 38 distinct parts. The full bill of materials is listed on this page.
Where can I download the IQ Modulator design files?
From the antonjan/IQ_Modulator repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the IQ Modulator design in my own project?
Yes, under the terms of its GPL-3.0 license, which antonjan chose for the repository.
Earlier revisions in the repo: vhf_uhf_IQ_Modulator_V3, vhf_uhf_IQ_Modulator_V2, vhf_uhf_IQ_Modulator
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