r5573 - trunk/gta02-core/docs/ecn

[alvieboy at docs.openmoko.org]

Author: alvieboy
Date: 2009-08-29 15:10:46 +0200 (Sat, 29 Aug 2009)
New Revision: 5573

Added:
   trunk/gta02-core/docs/ecn/ecn0035.txt
Modified:
   trunk/gta02-core/docs/ecn/STATUS
Log:
Add new WLAN RF ECN

Modified: trunk/gta02-core/docs/ecn/STATUS
===================================================================
--- trunk/gta02-core/docs/ecn/STATUS	2009-08-29 12:45:40 UTC (rev 5572)
+++ trunk/gta02-core/docs/ecn/STATUS	2009-08-29 13:10:46 UTC (rev 5573)
@@ -34,6 +34,7 @@
 0032	Execute	Add EMI and ESD protection to headset jack
 0033	Execute	Replace coupling capacitors for input/output lines
 0034	Discuss	Route additional SPI/GPIO pins to debug connector
+0035	Discuss Kill WLAN unused RF components
 
 Open ECNs
 ---------

Added: trunk/gta02-core/docs/ecn/ecn0035.txt
===================================================================
--- trunk/gta02-core/docs/ecn/ecn0035.txt	                        (rev 0)
+++ trunk/gta02-core/docs/ecn/ecn0035.txt	2009-08-29 13:10:46 UTC (rev 5573)
@@ -0,0 +1,14 @@
+Kill WLAN unused RF components
+
+
+WLAN module has 3 unused components on RF path: R7801, C7802' and
+C7803'. R7801 is a 0R resistor, and the caps are not used.
+
+These components do interfere with RF trace impedance, causing
+attenuations and signal shifts. 
+
+Remove these components from design, thus allowing for better
+signal reception and transmission.
+
+
+Author: Alvaro Lopes <alvieboy at alvie.com>