Compact satellite antenna module for GPS, Galileo, GLONASS, BeiDou and SDARS in automotive application

Abstract

A new design concept of a compact satellite antenna module for automotive application is presented, enabling mobile reception of all common Global Navigation Satellite Systems (GNSS), e.g. GPS in L1 and L2 bands, Galileo, GLONASS, BeiDou, as well as reception of Satellite Digital Audio Radio Services (SDARS). The design concept is based on the combination of a dual‐band ring structure for GNSS with a single‐band ring structure for SDARS which allows easy fabrication in combination with high reception properties. The performance of the antenna module and its fulfilment of the requirements of car manufacturers and service providers is proven by simulated and measured results, showing the high realised gain for circular polarisation, efficiency, matching and decoupling against terrestrial interferers.

Design of single‐fed dual‐polarized dual‐band slotted patch antenna for GPS and SDARS applications

“…And for proposed microstrip patch antennas the effective dielectric constant can be evaluated based on the equation given by 14 ϵ reff = ϵ r + 1 2…”

“…It shows the direction of the surface current vector at time phase 0° and at time phase 90°, which is equal in magnitude and opposite in time phase to 180° and 270°, respectively. The resonant frequencies can be derived for microstrip patch antennas based on the following equation, 14 …”

“…And for proposed microstrip patch antennas the effective dielectric constant can be evaluated based on the equation given by 14 where ɛ r represents relative permittivity and h is thickness of taken dielectric or substrate. W is radiator width.…”

“…In the studies many paper includes different methods of getting circular polarization antennas. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] Compact antenna with microstrip feeding for the application of both GPS and DCS is presented in Reference 3. This antenna consist a truncated, square patch and higher order mode annular ring of 180 × 180 × 6 mm 3 .…”

“…In the studies many paper includes different methods of getting circular polarization antennas 3‐18 . Compact antenna with microstrip feeding for the application of both GPS and DCS is presented in Reference 3.…”