RF Switch (for GPS/Mobile)
Infineon Technologies offers RF Switches to support a variety of applications, such as traditional single pole multi throw switches (e.g. for general purpose switching, band/mode switching and antenna diversity applications), double pole double throw (DPDT) switches and antenna switch modules (ASM).
Highly linear band or mode switches for both pre-PA and post-PA are vital for emerging multi-mode and multi-band architectures as mobile phone radios can easily operate in 14 bands or more. Typically single-pole, double-throw (SPDT) or single-pole, three-throw (SP3T) switches are used depending on the number of bands supported. Some examples of band/mode switch products from Infineon Technologies include the SPDT models BGS12PL6 and BGS12SN6, the SP3T model BGS13SN9 and the double-pole, double-throw (DPDT) models BGS22WL10 and BGS22W2L10.
Furthermore, diversity receive techniques are mandatory to increase data rates in emerging mobile phone radios. Depending on the number of bands supported, several Infineon devices with mid-range power capability are suggested for the diversity application like BGS15AN16 SP5T Switch, BGS18MN14 SP8T switch and the BGS110MN20 SP10T switch.
As for the main path ASM components, Infineon technologies is using its compact integrated passive device (IPD) technology to integrate GSM transmit harmonic frequency filtering in miniature module packages. The main antenna switch is required to be highly linear and to provide isolation between transmit and receive chains, with the lowest insertion loss possible. For architectures that integrate new features such as downlink inter-band carrier aggregation to increase downstream data rates, ASM are facing new challenges as they have to route two signals, received in different frequency bands, simultaneously. For this kind of applications, the new model BGSF1717MN26 SP7T+SP7T switch is suggested.
Our RF switches are typically implemented one of two ways: as discrete TSLP or TSNP packaged components or they can be delivered by a third-party module manufacturer using chip-scale-packages (CSP). Then, the control may be done in many different ways. However, upcoming designs are moving away from traditional general purpose input/output (GPIO) to Mobile Industry Processor Interface (MIPI) RFFE programmable interface.
For more details about our switch offering, please check the overview table below and find out the switch that fits best into your application.