Ultra-miniature GPS SAW filter saves space on innovative designs

11-06-2020 | Suntsu Electronics | Subs & Systems

Suntsu releases an Ultra-Miniature GPS Saw Filter with a PCB footprint of 1.1mm x 0.9mm, which is the smallest design on the market. The use of RF filters in GPS is a requirement, but it is exacting to find smaller package sizes with a low insertion loss. With the announcement of this device, the company directly addresses these two key challenges.

The new models within their small SMD package size will give a typical insertion loss of 0.9dB(typ.) to 1.2dB(max) at a frequency range of 1574.42MHz to 1576.42MHz (where the VSWR in/out is in the range of 1.2 to 1.5), of 1.3dB to 1.6dB respectively at 1597.55MHz to 1605.89MHz (VSWR 1.3 to 1.7) and of 1.1dB to 1.6dB at 1559.10MHz to 11563.10MHz. The attenuation ranges from 37dB (min.) to 40dB typ. (from DC to 960.00MHz) in steps down to 23dB and 27dB respectively (between 4900.00 and 6000.00MHz). Maximum input power is 15dBm at 5VDC.

Operating temperature: -30C to +85C, storage temperature -40C to +83C. Moreover, this saw filter also has a simple 50Ohm single-ended source and requires no impedance matching.

By Natasha Shek