SNA DBridge - Revision history

WikiSysop at 23:24, 1 February 2016

2016-02-01T23:24:23Z

← Older revision		Revision as of 23:24, 1 February 2016
Line 79:		Line 79:
	\|}		\|}

	==~~PCB/Construction Photos~~==		==Gallery==
	<gallery perrow=3 widths=240px heights=120px>		<gallery perrow=3 widths=240px heights=120px>
	File:~~rev0VTx_VCO_PCB_Bottom~~.~~jpg~~\|~~Bottom of unpopulated PCB~~		File:Ja4220_response.PNG\|JA4220 calculated S11 response for antenna and -10 dB return loss load
	~~File:rev0VTx_VCO_PCB_Top.jpg\|Top of unpopulated PCB~~
	~~File:rev0VTx_VCO_Top.jpg\|Populated PCB~~
	</gallery>		</gallery>

WikiSysop: /* Testing */

2016-02-01T23:16:40Z

Testing

← Older revision		Revision as of 23:16, 1 February 2016
Line 21:		Line 21:
	* '''2.1.2016''': A JA4220 was assembled onto a TCM1-43X PCB after discovering the error mentioned above, and both TCM1-43X and JA4220 version directional bridges were tested on a VNA from 0.1-8 GHz using a 50 ohm load, open (as baseline calibration), and multi-band antenna.		* '''2.1.2016''': A JA4220 was assembled onto a TCM1-43X PCB after discovering the error mentioned above, and both TCM1-43X and JA4220 version directional bridges were tested on a VNA from 0.1-8 GHz using a 50 ohm load, open (as baseline calibration), and multi-band antenna.

	[[File:JA4220_vs_TCM1-43X.PNG\|thumb\|center\|800px\|Calculated S11 responses for a -10 dB return loss load (100 ohm resistor), and multi-band antenna, and cumulative error functions for each.]]		[[File:JA4220_vs_TCM1-43X.PNG\|thumb\|center\|800px\|Calculated S11 responses for a -10 dB return loss load (100 ohm resistor), and multi-band antenna, and cumulative error functions for each. TCM1-43X responses in red, JA4220 responses in blue, and direct measurement in black.]]

	==Revisions==		==Revisions==

WikiSysop at 23:13, 1 February 2016

2016-02-01T23:13:55Z

Show changes

WikiSysop at 23:07, 1 February 2016

2016-02-01T23:07:44Z

← Older revision		Revision as of 23:07, 1 February 2016
Line 1:		Line 1:
	{{navup \|previous=SA_LPF \|up=Spectrum_Analyzer \|next=SA_MIX1}}		{{navup \|previous=SA_LPF \|up=Spectrum_Analyzer \|next=SA_MIX1}}

			[[File:DRBridges.jpg\|thumb\|right\|Schematic for the ADL5513 Power Detector.]]

	This page describes the Directional Bridge for the rev0SNA 50-2500 MHz Scalar Network Analyzer.		This page describes the Directional Bridge for the rev0SNA 50-2500 MHz Scalar Network Analyzer.

	==Summary==		==Summary==
	[[File:~~ADL5513_Schematic~~.~~png~~\|thumb\|right\|Schematic for the ADL5513 Power Detector.]]		[[File:DRBridge_Sch.PNG\|thumb\|right\|Schematic for the ADL5513 Power Detector.]]
	[[File:~~ADL5513_Board~~.~~png~~\|thumb\|right\|Board for the ADL5513 Power Detector.]]		[[File:DRBridge_Layout.PNG\|thumb\|right\|Board for the ADL5513 Power Detector.]]

	The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range, a phase balance of <3 degrees and amplitude balance of <0.5 dB across the 50-3000 MHz range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.		The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range, a phase balance of <3 degrees and amplitude balance of <0.5 dB across the 50-3000 MHz range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.

			[[File:Balun_Detail.jpg\|thumb\|center\|640px\|Image showing the construction differences between the two baluns; the TCM1-43X (right) uses an alternate Guanella balun structure<ref>Mini-Circuits, "Balun Transformers". Available:
			https://www.minicircuits.com/pages/BalunApplicationNote.htm</ref> where the JA4220 (left) uses a standard Guanella balun structure.]]

	Testing showed both directional bridges have basic return loss functionality, however the performance of the two are both poor at the high frequency, with both showing approximately +/- 5 dB error with a -10 dB return loss load at the upper end of the frequency range, with a cumulative error of approximately 2.1 dB for both JA4220 and TCM1-43X with the -10 dB load, and approximately 3.3 dB for the antenna load. The JA4220 shows slightly improved performance at the middle of the range (~400-2200 MHz), and will be used for future projects requiring a wideband balun.		Testing showed both directional bridges have basic return loss functionality, however the performance of the two are both poor at the high frequency, with both showing approximately +/- 5 dB error with a -10 dB return loss load at the upper end of the frequency range, with a cumulative error of approximately 2.1 dB for both JA4220 and TCM1-43X with the -10 dB load, and approximately 3.3 dB for the antenna load. The JA4220 shows slightly improved performance at the middle of the range (~400-2200 MHz), and will be used for future projects requiring a wideband balun.
Line 157:		Line 162:
	File:rev0VTx_VCO_Top.jpg\|Populated PCB		File:rev0VTx_VCO_Top.jpg\|Populated PCB
	</gallery>		</gallery>


			==References==
			<references/>

WikiSysop: /* Summary */

2016-02-01T22:47:58Z

Summary

← Older revision		Revision as of 22:47, 1 February 2016
Line 8:		Line 8:

	The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range, a phase balance of <3 degrees and amplitude balance of <0.5 dB across the 50-3000 MHz range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.		The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range, a phase balance of <3 degrees and amplitude balance of <0.5 dB across the 50-3000 MHz range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.

			Testing showed both directional bridges have basic return loss functionality, however the performance of the two are both poor at the high frequency, with both showing approximately +/- 5 dB error with a -10 dB return loss load at the upper end of the frequency range, with a cumulative error of approximately 2.1 dB for both JA4220 and TCM1-43X with the -10 dB load, and approximately 3.3 dB for the antenna load. The JA4220 shows slightly improved performance at the middle of the range (~400-2200 MHz), and will be used for future projects requiring a wideband balun.

	==Testing==		==Testing==

WikiSysop: /* Testing */

2016-02-01T22:44:12Z

Testing

← Older revision		Revision as of 22:44, 1 February 2016
Line 14:		Line 14:
	* '''2.1.2016''': A JA4220 was assembled onto a TCM1-43X PCB after discovering the error mentioned above, and both TCM1-43X and JA4220 version directional bridges were tested on a VNA from 0.1-8 GHz using a 50 ohm load, open (as baseline calibration), and multi-band antenna.		* '''2.1.2016''': A JA4220 was assembled onto a TCM1-43X PCB after discovering the error mentioned above, and both TCM1-43X and JA4220 version directional bridges were tested on a VNA from 0.1-8 GHz using a 50 ohm load, open (as baseline calibration), and multi-band antenna.

	[[File:~~ADL5513_Data~~.~~png~~\|thumb\|center\|~~690px~~\|~~Tabulated data across frequency~~ and ~~power level~~.]]		[[File:JA4220_vs_TCM1-43X.PNG\|thumb\|center\|800px\|Calculated S11 responses for a -10 dB return loss load (100 ohm resistor), and multi-band antenna, and cumulative error functions for each.]]

	==Revisions==		==Revisions==

WikiSysop: /* Testing */

2016-02-01T22:43:02Z

Testing

← Older revision		Revision as of 22:43, 1 February 2016
Line 12:		Line 12:
	* '''12.x.2013''': The PCB was assembled and tested for basic functionality by measuring coupled power with and without a load attached.		* '''12.x.2013''': The PCB was assembled and tested for basic functionality by measuring coupled power with and without a load attached.
	* '''1.28.2016''': A JA4220 PCB was assembled and tested, however the PCB component was drawn incorrectly and thus the board did not function as expected. The original TCM1-43X PCB can be used for JA4220 and will be assembled and tested instead.		* '''1.28.2016''': A JA4220 PCB was assembled and tested, however the PCB component was drawn incorrectly and thus the board did not function as expected. The original TCM1-43X PCB can be used for JA4220 and will be assembled and tested instead.
			* '''2.1.2016''': A JA4220 was assembled onto a TCM1-43X PCB after discovering the error mentioned above, and both TCM1-43X and JA4220 version directional bridges were tested on a VNA from 0.1-8 GHz using a 50 ohm load, open (as baseline calibration), and multi-band antenna.

	[[File:ADL5513_Data.png\|thumb\|center\|690px\|Tabulated data across frequency and power level.]]		[[File:ADL5513_Data.png\|thumb\|center\|690px\|Tabulated data across frequency and power level.]]

WikiSysop: /* Summary */

2016-02-01T19:39:47Z

Summary

← Older revision		Revision as of 19:39, 1 February 2016
Line 7:		Line 7:
	[[File:ADL5513_Board.png\|thumb\|right\|Board for the ADL5513 Power Detector.]]		[[File:ADL5513_Board.png\|thumb\|right\|Board for the ADL5513 Power Detector.]]

	The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.		The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range, a phase balance of <3 degrees and amplitude balance of <0.5 dB across the 50-3000 MHz range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.

	==Testing==		==Testing==

WikiSysop: /* Testing */

2016-02-01T19:38:25Z

Testing

← Older revision		Revision as of 19:38, 1 February 2016
Line 11:		Line 11:
	==Testing==		==Testing==
	* '''12.x.2013''': The PCB was assembled and tested for basic functionality by measuring coupled power with and without a load attached.		* '''12.x.2013''': The PCB was assembled and tested for basic functionality by measuring coupled power with and without a load attached.
			* '''1.28.2016''': A JA4220 PCB was assembled and tested, however the PCB component was drawn incorrectly and thus the board did not function as expected. The original TCM1-43X PCB can be used for JA4220 and will be assembled and tested instead.

	[[File:ADL5513_Data.png\|thumb\|center\|690px\|Tabulated data across frequency and power level.]]		[[File:ADL5513_Data.png\|thumb\|center\|690px\|Tabulated data across frequency and power level.]]

WikiSysop: Created page with "{{navup |previous=SA_LPF |up=Spectrum_Analyzer |next=SA_MIX1}} This page describes the Directional Bridge for the rev0SNA 50-2500 MHz Scalar Network Analyzer. ==Summary== [..."

2016-01-21T02:24:08Z

Created page with "{{navup |previous=SA_LPF |up=Spectrum_Analyzer |next=SA_MIX1}} This page describes the Directional Bridge for the rev0SNA 50-2500 MHz Scalar Network Analyzer. ==Summary== [..."

New page

{{navup |previous=SA_LPF |up=Spectrum_Analyzer |next=SA_MIX1}}

This page describes the Directional Bridge for the rev0SNA 50-2500 MHz Scalar Network Analyzer.

==Summary==
[[File:ADL5513_Schematic.png|thumb|right|Schematic for the ADL5513 Power Detector.]]
[[File:ADL5513_Board.png|thumb|right|Board for the ADL5513 Power Detector.]]

The Directional Bridge is based around a wideband balun and precision RF resistors. Two baluns chosen for evaulation, the [http://www.minicircuits.com/pdfs/TCM1-43X+.pdf Mini-Circuits TCM1-43X+], which features an amplitude balance of <0.5dB and phase balance of <7 degrees across the 50-2500 MHz operating range, and the [http://www.coilcraft.com/pdfs/ja4220.pdf Coilcraft JA-4220], which features an insertion loss of <2dB across the 50-2500 MHz operating range. The bridge resistors chosen are Vishay [http://www.digikey.com/product-detail/en/FC0402E50R0BTBST1/FC0402-50BFCT-ND/1769794 FC0402E50R0BTBST1] 0402 flip chip precision 50 ohm 10 GHz RF resistors. The layout was done to minimize distances and match distances between the resistors in the bridge. The performance will largely be limited by the assembly of the RF transformer and quality with regard to phase and amplitude balance.

==Testing==
* '''12.x.2013''': The PCB was assembled and tested for basic functionality by measuring coupled power with and without a load attached.

[[File:ADL5513_Data.png|thumb|center|690px|Tabulated data across frequency and power level.]]

==Revisions==
* '''1.0''': Initial revision using JA-4220 balun.
* '''1.1''': Second revision using TCM1-43X+ balun.

==Bill of Materials (v1.0)==
{| border="1"
|style="text-align:center;" |'''Part'''
|style="text-align:center;" |'''Quantity'''
|style="text-align:center;" |'''Unit Cost'''
|style="text-align:center;" |'''Total Cost'''
|style="text-align:center;" |'''Source'''
|-

|ADL5513
|1
|style="text-align:right;" |$11.36
|style="text-align:right;" |$11.36
|[http://www.digikey.com/product-detail/en/ADF4350BCPZ/ADF4350BCPZ-ND/1999320 Digi-Key]
|-

|ADP124
|1
|style="text-align:right;" |$1.95
|style="text-align:right;" |$1.95
|[http://www.digikey.com/product-detail/en/ADP124ARHZ-3.3-R7/ADP124ARHZ-3.3-R7CT-ND/2237789 Digi-Key]
|-

|AP1115
|1
|style="text-align:right;" |$0.54
|style="text-align:right;" |$0.54
|[http://www.digikey.com/product-detail/en/AP1115BY35L-13/AP1115BY35LDICT-ND/1301510 Digi-Key]
|-

|0402 100nF Capacitor
|2
|style="text-align:right;" |$0.011
|style="text-align:right;" |$0.11
|[http://www.digikey.com/product-detail/en/C1005X5R1A104K050BA/445-1265-1-ND/567732 Digi-Key]
|-

|0402 10pF Capacitor
|2
|style="text-align:right;" |$0.0116
|style="text-align:right;" |$0.12
|[http://www.digikey.com/product-detail/en/C1005C0G1H100D050BA/445-1235-1-ND/567743 Digi-Key]
|-

|0402 33nF Capacitor
|2
|style="text-align:right;" |$0.024
|style="text-align:right;" |$0.05
|[http://www.digikey.com/product-detail/en/CL05B333KO5NFNC/1276-1555-1-ND/3889641 Digi-Key]
|-

|0603 4.7uF Capacitor
|3
|style="text-align:right;" |$0.1484
|style="text-align:right;" |$0.45
|[http://www.digikey.com/product-detail/en/CL10A475MO8NNNC/1276-1904-1-ND/3889990 Digi-Key]
|-

|0805 10uF Capacitor
|1
|style="text-align:right;" |$0.30
|style="text-align:right;" |$0.30
|[http://www.digikey.com/product-detail/en/C1210X104KCRACTU/399-6769-1-ND/3083943 Digi-Key]
|-

|0603 Capacitor
|1
|style="text-align:right;" |$0.0096
|style="text-align:right;" |$0.01
|[http://myworld.ebay.com/mib_instruments eBay - mib_instruments]
|-

|0603 Resistor
|2
|style="text-align:right;" |$0.00294
|style="text-align:right;" |$0.01
|[http://myworld.ebay.com/mib_instruments eBay - mib_instruments]
|-

|0402 Resistor
|1
|style="text-align:right;" |$0.025
|style="text-align:right;" |$0.03
|[http://myworld.ebay.com/mib_instruments eBay - mib_instruments]
|-

|0603 Ferrite Bead (470 Ohm)
|1
|style="text-align:right;" |$0.0472
|style="text-align:right;" |$0.05
|[http://www.digikey.com/product-detail/en/MPZ1608S471A/445-5222-1-ND/2117956 Digi-Key]
|-

|Male Header
|3
|style="text-align:right;" |$0.01
|style="text-align:right;" |$0.03
|[http://www.ebay.com/ eBay]
|-

|SMA Female Connector
|1
|style="text-align:right;" |$3.37
|style="text-align:right;" |$3.37
|[http://www.digikey.com/product-detail/en/CONSMA003.062/CONSMA003.062-ND/1577208 Digi-Key]
|-

|SMA Female Connector
|1/5
|style="text-align:right;" |$2.51
|style="text-align:right;" |$0.50
|[http://www.dealextreme.com/p/sma-1-5-diy-connector-plug-5-pack-5132 Dealextreme]
|-

|PCB
|0.675"x0.75"/3
|style="text-align:right;" |$10.00
|style="text-align:right;" |$1.69
|[http://dorkbotpdx.org/wiki/pcb_order Laen's PCB]
|-

|'''Total Unit Cost'''
|
|
|style="text-align:right;" |'''$20.57'''
|
|-
|}

==PCB/Construction Photos==
<gallery perrow=3 widths=240px heights=120px>
File:rev0VTx_VCO_PCB_Bottom.jpg|Bottom of unpopulated PCB
File:rev0VTx_VCO_PCB_Top.jpg|Top of unpopulated PCB
File:rev0VTx_VCO_Top.jpg|Populated PCB
</gallery>