4 layers66.5 × 93.5 mm
4 layers97.1 × 32.8 mm
Frequency synth
loxodes/vna205Under development open hardware microwave vector network analyzer
- Size
- 97.1 × 32.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 278
- Nets
- 137
- Pads
- 679
- Tracks, vias
- 1,274, 215
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 22 Apr 2016
- Updated
- 31 Dec 2023
Overview
Frequency synth is an open-source printed circuit board by loxodes, from the loxodes/vna repository on GitHub. It is a 4-layer board of 97.1 × 32.8 mm with 278 parts on 137 nets, routed with 1,274 tracks and 215 vias.
It is built around the HMC424A, PE42521C-Z and HFCN-5500+, with the LFCN-1000+, LFCN-1450+ and LFCN-4400+ among its other parts. Its parts include 72 capacitors, 49 resistors, 16 ICs, 9 diodes and 3 inductors. It belongs with the audio and music and radio and wireless boards of this library.
Main components
12HMC424A
SMD0.5dB 0.5dB~31.5dB 0Hz~13GHz 3.3dB、4dB、4.6dB 50Ω SMD RF Attenuators ROHSAnalog DevicesRF Attenuator
PE42521C-Z
QFN-16(3x3)-40℃~+85℃ 1.85dB 17dB 2.3V~5.5V 9kHz~13GHz SPDT QFN-16(3x3) RF Switches ROHSpSemiRF Switches
HFCN-5500+
SMD-6P,3.2x1.6mm-55℃~+100℃ 5.5GHz 50Ω 6GHz~11.5GHz SMD-6P,3.2x1.6mm RF Filters ROHSMini-CircuitsRF Filters
LFCN-1000+
SMD-4P,3.2x1.6mm-55℃~+100℃ 1.3GHz 1dB 50Ω Low Pass SMD-4P,3.2x1.6mm RF Filters ROHSMini-CircuitsRF Filters
LFCN-1450+
SMD-4P,3.2x1.6mmRF FiltersMini-CircuitsLFCN-4400+
SMD-4P,3.2x1.6mmSMD-4P,3.2x1.6mm RF Filters ROHSMini-CircuitsRF FiltersLFCN-630+
SMD-4P,3.2x1.6mm-55℃~+100℃ 1.2dB 50Ω 830MHz Low Pass SMD-4P,3.2x1.6mm RF Filters ROHSMini-CircuitsRF Filters
LFCN-8400+
SMD-4P,3.2x1.6mmRF FiltersMini-Circuits
LMK61E2-SIA
10-1000MHz 3.3V ±50ppm, Ultra-Low Jitter Programmable Oscillator with Internal EEPROMTexas InstrumentsUncategorised
DMG2305UX
SOT-23-55℃~+150℃ 1 P-Channel 1.7W 190pF 1V 20V 4.1A 52mΩ@4.5V 7.8nC 740pF P-Channel SOT-23 MOSFETs ROHSTECH PUBLICMOSFETsLFCN-2250+
SMD3216-4P-55℃~+100℃ 2.25GHz 2.575GHz 50Ω Low-pass Filter SMD3216-4P Ceramic Filters ROHSMini-CircuitsCeramic Filters
LFCN-3400+
SMD3216-4P-55℃~+100℃ 3.95GHz 3.95GHz 50Ω Low-pass Filter SMD3216-4P Ceramic Filters ROHSMini-CircuitsCeramic Filters
README
README.mdOpen Hardware Vector Network Analyzer
I'm developing a proof of concept two port microwave vector network analyzer. The project is under developent. Ongoing documentation and logs are located on a hackaday.io project page.
Usage
This project is still under development, y'all probably don't want to try reproducing it yet. Two port measurements to 14 GHz work, a redesign for operation out to 36 GHz is in progress.
Hardware Design
See breakouts and hardware for various modules developed for the network analyzer.
Software Design
See the software directory for scraps of software written for testing VNA modules.
License
Unless otherwise noted, all work is under a MIT license.
Contact
Feel free to contact me at arcticmicrowave@gmail.com or loxodes on irc.freenode.net
Parts
278| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 100 nF | Capacitors_SMD:C_0402 | C207, C208, C210, C213, C215, C217, C222, C225, C227, C231, C233, C302, C318, C402, C407, C410 +1 |
| 15 | 10 uF | Capacitors_SMD:C_0603 | C202, C204, C206, C209, C218, C219, C223, C224, C403, C404, C604, C903, C1001, C1004, C1005 |
| 14 | 100 pF | Capacitors_SMD:C_0402 | C234, C301, C307, C308, C309, C310, C315, C316, C317, C319, C406, C409, C602, C603 |
| 13 | 30 pF | Capacitors_SMD:C_0402 | C226, C230, C232, C303, C304, C305, C306, C311, C312, C313, C314, C401, C408 |
| 12 | 10k | Resistors_SMD:R_0402 | R401, R402, R403, R410, R411, R412, R902, R903, R904, R905, R1001, R1002 |
| 8 | 0 | Resistors_SMD:R_0402 | R202, R203, R211, R220, R221, R224, R225, R230 |
| 6 | 1 uF | Capacitors_SMD:C_0402 | C211, C216, C405, C902, C1002, C1003 |
| 6 | 100 | Resistors_SMD:R_0402 | R404, R405, R406, R407, R408, R409 |
| 6 | 1k | Resistors_SMD:R_0402 | R208, R212, R213, R214, R215, R216 |
| 6 | 5.1V | Diodes_SMD:SOD-123 | D401, D402, D403, D404, D405, D406 |
| 5 | 49.9 | Resistors_SMD:R_0402 | R218, R219, R226, R228, R229 |
| 4 | CONN_SMA_2GND | vna_footprints:734120110_ufl_umc | U201, U203, U204, U205 |
| 4 | DNP | Resistors_SMD:R_0402 | R201, R222, R223, R901 |
| 4 | MOUNTING_HOLE | Mounting_Holes:MountingHole_2-7mm | H1001, H1002, H1003, H1004 |
| 3 | 10 pF | Capacitors_SMD:C_0402 | C228, C229, C801 |
| 3 | LED | LEDs:LED_0603 | D201, D1001, D1002 |
| 2 | 18 | Resistors_SMD:R_0402 | R206, R207 |
| 2 | 5.6 nH | Resistors_SMD:R_0402 | L202, L203 |
| 2 | 68 | Resistors_SMD:R_0402 | R204, R205 |
| 2 | HMC321 | Housings_DFN_QFN:QFN-24-1EP_4x4mm_Pitch0.5mm | U304, U305 |
| 1 | 12 | Resistors_SMD:R_0402 | R210 |
| 1 | 150 | Resistors_SMD:R_0402 | R209 |
| 1 | 47 nF | Capacitors_SMD:C_0402 | C212 |
| 1 | 560 pF | Capacitors_SMD:C_0402 | C214 |
| 1 | 680 | Resistors_SMD:R_0402 | R217 |
| 1 | 6800 pF | Capacitors_SMD:C_0402 | C221 |
| 1 | 74HC04_FULL | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | U403 |
| 1 | ADM7150 | Housings_DFN_QFN:DFN-8-1EP_3x3mm_Pitch0.5mm | U1003 |
| 1 | CONN_01X02 | Terminal_Blocks:TerminalBlock_Pheonix_PT-3.5mm_2pol | P1001 |
| 1 | CONN_SMA_2GND | vna_footprints:SMA_CPW_1MM_.2MM | U1002 |
| 1 | DMG2305UX | TO_SOT_Packages_SMD:SOT-23 | Q1001 |
| 1 | DNP | Capacitors_SMD:C_0402 | C220 |
| 1 | FERRITE CHIP | Resistors_SMD:R_0603 | L901 |
| 1 | HFCN-5500+ | vna_footprints:FV1206-1_p35mm_ustrip | FI802 |
| 1 | HMC424 | Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm | U402 |
| 1 | LFCN-1000+ | vna_footprints:FV1206 | FI306 |
| 1 | LFCN-1450+ | vna_footprints:FV1206 | FI305 |
| 1 | LFCN-2250+ | vna_footprints:FV1206 | FI304 |
| 1 | LFCN-3400+ | vna_footprints:FV1206 | FI303 |
| 1 | LFCN-4400+ | vna_footprints:FV1206 | FI302 |
| 1 | LFCN-6000D+ | vna_footprints:FV1206 | FI301 |
| 1 | LFCN-630+ | vna_footprints:FV1206 | FI307 |
| 1 | LFCN-8400+ | vna_footprints:FV1206-4 | FI801 |
| 1 | LMK61E2 | vna_footprints:QFM8 | U901 |
| 1 | LMX2592 | Housings_DFN_QFN:QFN-40-1EP_6x6mm_Pitch0.5mm | U202 |
| 1 | LTC1983 | TO_SOT_Packages_SMD:SOT-23-6 | U401 |
| 1 | PE42521 | Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm | U601 |
| 1 | PTC/MF-NSMF110-2 | Resistors_SMD:R_1206 | R1003 |
| 1 | boosterpack_ti | vna_footprints:3221-40-0100-00_conn40 | U1001 |
| 1 | picture | vna_footprints:cat | U1004 |
The 164 most common of 278 parts.
Questions
How big is the Frequency synth PCB?
It measures 97.1 × 32.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Frequency synth use?
278 parts, built around the HMC424A, PE42521C-Z, HFCN-5500+ and LFCN-1000+. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Frequency synth KiCad files?
From the loxodes/vna repository on GitHub, at the commit this page was made from: the board is hardware/archive/frequency_synth/frequency_synth.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Frequency synth design in my own project?
Its repository states no licence, so its author keeps all rights: ask loxodes before reusing the design.
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