I am designing a GPS module but am quite new to RF design. I have seen a number of people say to keep your antenna feed line as short as possible. But in the design guide of the GPS module I am using, it says for chip antennas, which I am using, keep the module a minimum of 2 cm away from the antenna.
Also, the datasheet for the chip antenna I am using shows a long winding trace for the feed line.
I have several components in between the feed point and the RF IN pin on the GPS module, such as blocking capacitors, LNA, SAW filter, and frequency tuning inductor. I have placed the GPS module about 7 cm away from the antenna, placing all the components in between like this.
Which design rule should I obey more closely? Trying to keep the GPS module at least 2 cm away from the chip antenna? Or keeping the RF traces as short as possible? Also I would welcome any other comments or criticisms of my design.