4 layers

Switch demod

Under development open hardware microwave vector network analyzer

Copper layers: 4
Thickness: 1.6 mm
Parts: 141
Nets: 98
Pads: 459
Tracks, vias: 15, 0
Routed: Yes
KiCad: KiCad 4
Created: 22 Apr 2016
Updated: 31 Dec 2023

Overview

Switch demod is an open-source printed circuit board by loxodes, from the loxodes/vna repository on GitHub. It is a 4-layer board with 141 parts on 98 nets, routed with 15 tracks and 0 vias.

It is built around the HMC424A, PE42521C-Z and NC7SVU04L6X, with the ADL5380ACP and DMG2305UX among its other parts. Its parts include 60 capacitors, 44 resistors, 24 ICs, 7 diodes and 2 connectors. It belongs with the radio and wireless and sensors and measurement boards of this library.

Main components

README

README.md

Open 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. picture of VNA R1 picture of VNA reference picture of mm modules

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

Category and platform

Radio and wireless Sensors and measurement

Topics

network-analyzer vna rf kicad hardware synthesizer

Project files

Show this board on your page

https://pcbkit.io/boards/loxodes/vna/hardware/archive/switch_demod/switch_demod.kicad_pcb

The board's own page, for a message or a post.

Source

Repository: loxodes/vna
Board file: hardware/archive/switch_demod/switch_demod.kicad_pcb
Commit: 35c49de
Licence: Not stated

Parts

141

Qty	Value	Footprint	References
26	100 nF	Capacitors_SMD:C_0402	C402, C403, C411, C413, C414, C415, C416, C602, C607, C701, C702, C705, C706, C708, C711, C712 +10
13	100 pF	Capacitors_SMD:C_0402	C201, C202, C401, C404, C405, C406, C407, C408, C409, C410, C412, C606, C609
11	10k	Resistors_SMD:R_0402	R401, R403, R404, R405, R406, R601, R602, R603, R610, R611, R612
7	10 uF	Capacitors_SMD:C_0603	C203, C604, C707, C709, C713, C714, C718
6	10	Resistors_SMD:R_0402	R712, R719, R720, R721, R722, R723
6	100	Resistors_SMD:R_0402	R604, R605, R606, R607, R608, R609
6	1k	Resistors_SMD:R_0402	R703, R717, R718, R801, R802, R803
6	25	Resistors_SMD:R_0402	R708, R709, R710, R711, R714, R715
6	3.3V	Diodes_SMD:SOD-123	D601, D602, D603, D604, D605, D606
5	0	Resistors_SMD:R_0402	R701, R702, R704, R706, R716
5	NC7SVU04	TO_SOT_Packages_SMD:SC-70-5	U705, U706, U707, U708, U709
3	1 uF	Capacitors_SMD:C_0402	C710, C716, C717
3	CONN_SMA_2GND	vna_footprints:142-0721-882_sma_cutout	U801, U802, U901
3	C_Small	Capacitors_SMD:C_0402	C610, C801, C802
3	DNP	Resistors_SMD:R_0402	R705, R707, R713
2	220 pF	Capacitors_SMD:C_0402	C703, C704
2	30 pF	Capacitors_SMD:C_0402	C601, C608
2	LT1819	Housings_SSOP:MSOP-8_3x3mm_Pitch0.65mm	U701, U702
2	LTC1566-1	Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm	U404, U405
2	PWR_SPLITTER	vna_footprints:PS1608	U301, U501
2	TCM-63AX+	vna_footprints:TCM1-63AX+	U401, U403
1	10 nF	Capacitors_SMD:C_0603	C715
1	10 uF TANT	SMD_Packages:SMD-1206_Pol	C603
1	100 uF	Capacitors_SMD:C_1210	C901
1	470	Resistors_SMD:R_0402	R402
1	74HC04_FULL	Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm	U603
1	ADL5380	Housings_DFN_QFN:QFN-24-1EP_4x4mm_Pitch0.5mm	U402
1	CONN_01X02	Terminal_Blocks:TerminalBlock_Pheonix_PT-3.5mm_2pol	P901
1	CONN_02X03	Pin_Headers:Pin_Header_Straight_2x03	P402
1	C_Small	Capacitors_SMD:C_0805	C605
1	DMG2305UX	TO_SOT_Packages_SMD:SOT-23	Q901
1	FERRITE CHIP	Resistors_SMD:R_0805	L901
1	HMC424	Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm	U602
1	JUMPER	Resistors_SMD:R_1206	JP701
1	LED	LEDs:LED_0603	D701
1	LTC1983	TO_SOT_Packages_SMD:SOT-23-6	U601
1	LTC2323	Housings_DFN_QFN:QFN-28-1EP_4x5mm_Pitch0.5mm	U704
1	NC7SV74KBX	vna_footprints:US8	U710
1	PE42521	Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm	U201
1	TEST_1P	Pin_Headers:Pin_Header_Straight_1x01	W701
1	TPS793	TO_SOT_Packages_SMD:SOT-23-5	U703

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Questions

What parts does the Switch demod use?

141 parts, built around the HMC424A, PE42521C-Z, NC7SVU04L6X and ADL5380ACP. 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 Switch demod KiCad files?

From the loxodes/vna repository on GitHub, at the commit this page was made from: the board is hardware/archive/switch_demod/switch_demod.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Switch demod design in my own project?

Its repository states no licence, so its author keeps all rights: ask loxodes before reusing the design.