DLI has introduced a family of GPS components that includes two bandpass filters, two diplexers and a notch filter. The bandpass filters and diplexer pass both L1 and L2 frequency bands. The notch filter attenuates the L1 frequency band. Two different versions of the diplexer have been designed and manufactured. The first version has higher insertion loss, but better rejection due to a narrow bandwidth. The bandwidth was widened on the second version to reduce the insertion loss at the cost of eroding the rejection skirts.
The bandpass filters and diplexer incorporate DLI's new printed wired board (PWB) cover technology. The PWB cover provides RF shielding and reduces the possibility of energy coupling from the filters to other components in the circuit. The notch filter incorporates an integral metal cover for RF shielding. All filters employ DLI's high-k ceramic, which allow for great size reduction and superior temperature stability compared to alumina and PWB materials. All components are radiation hardened, do not out gas and are solder surface-mount compatible, making them an ideal, temperature stable drop-in for any GPS application.
Dielectric Laboratories Inc. (DLI),
Cazenovia, NY
(315) 655-8710,
www.dilabs.com
RS No. 306