Changes between Version 10 and Version 11 of Internal/USBNoise/WiBo

Timestamp:

Jun 24, 2006, 8:16:27 PM (18 years ago)

Author:

seskar

Comment:

—

Internal/USBNoise/WiBo

@@ -3 +3 @@
 WiBo102 is a RF Front-End board designed around a Maxim, Inc. [attachment:MAX2828-9ds.pdf MAX2829ETN+D] radio transceiver chip. This chip incorporates most of the radio functions except for the reference oscillator, baseband I/Q amps, power amps and antenna switches. The block diagram of WiBo board  is show in Figure 1.
 
-[[Image(WiBo-BD.jpg)]]
+[[Image(WiBo-BD.jpg, title="Figure 1: WiBo Block Diagram")]]
 
 Figure 2 shows the RF power amp (AWL6951) and RF switch (upg2035) section transfer function. The AWL6951 is a dual frequency power amplifier covering 2.4 and 5.2 GHz. The blue curve shows the response of the 2.4 GHz section, the red curve the 5.2 GHz section. At 2.4 GHz, the power amplifier/switch gain is about 30dB, with power output of about 20dBm while at 5.4 GHz, the power output is about 13 dBm.
 
-[[Image(Amp-Switch.jpg)]]
+[[Image(Amp-Switch.jpg, title="Figure 2: Amplifier/Switch Transfer Function")]]
 
 Four antennas (A01-A04) are mounted directly to WiBo102 though provision is made for adding SMA connectors and using off-board antennas if necessary.  Two antennas are primarily for transmission (Tx) and two for receiving (Rx).  Antenna switching is possible for diversity gain.
@@ -22 +22 @@
 The next copper layer down is all ground plane.  The third layer down is a signal layer with predominately vertical traces surrounded by ground plane.  The fourth or bottom layer is another signal layer with predominately horizontal traces.
 
-[[Image(WiBo-PCB.jpg)]]
+[[Image(WiBo-PCB.jpg, title="WiBo PCB")]]
 
 === B. Connector J3_F and I/O ===