pcb checkPage: 1 PREPARED BY: APPROVALS:PRELIMINARYREVISION: 1.1PAGE 1 OF 6 Project: GSM TYPE OF DOCUMENT: Engineering DesignPCB Check List for Airforce Version 1.2PRELIMINARY Page: 2The PCB Trace Design Flow Sequence: 1. Place all the ground vias on the component relevant pads 2. Route the VBAT trace to PA 3. Route the VUHF net 4. Route the VTIC net 5. Route the Vrf net 6. Route the Vccd net 7. Route the RF striplines and micro striplines 8. Route the PLL loop filters 9. Route the PAC circuit 10. 11. 12. Route other RF traces Route the audio traces Route the digital traces1 TX 1. TX_I+, TX_I-, TX_Q+, TX_Q- from CX20505 to CX74017 should be parallel and symmetry. The I and Q signal traces should be separated by ground. 2. TXIF+, TXIF- from CX74017 pin 24,25 to pin 18,19, should be pa……
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