TD-SCDMA communication card of SD card interface

Abstract

The invention relates to a TD-SCDMA communication card of an SD card interface, which is integrated with antennae, a radio frequency chip, a TD-SCDMA baseband chip, a procedure memory, a data memory, a power management and SIM identity card interface and a standard SD card interface. With the development of technology, the radio frequency chip, the baseband chip, the procedure memory, the data memory and even a power supply part can be partially or wholly designed into the same chip, and the chip can be a non-packaged wafer or a packaged chip. The TD-SCDMA communication card has the obvious characteristics of performing TD-SCDMA voice and data transmission by utilizing the SD card interface, a PC and products, such as an MP4 and the like, and designing the SIM identity card interface on an SD card. The antennae adopt miniature ceramic integrated antennae arranged on a PCB; or metal wires are directly distributed on the PCB as the antennae; or PIFA antennae are realized by combining a metal sheet on a shell of the SD card and metal earth wires on the PCB of the SD card.

Description

technical field [0001] The invention relates to a TD-SCDMA communication card with an SD card interface. Especially a TD-SCDMA communication card with SD card interface, which integrates antenna, radio frequency chip, TD-SCDMA baseband chip, program memory and data memory, power management, SIM identity card interface and standard SD card interface. With the development of technology, some or all of the radio frequency chip, baseband chip, program, data memory and even the power supply part can be designed in the same chip. The above chip can be an unpackaged chip or a packaged chip. Its notable feature is the use of SD card interface and PC, MP4 and other products for TD-SCDMA voice and data transmission, and the SIM identity card interface is designed on the SD card. It can be inserted into various devices with SD card sockets such as MP3, MP4, PMP, multimedia players, digital cameras, digital learning machines, and notebook computers. By upgrading the host program, the abo...

AI Technical Summary

Problems solved by technology

[0002] The TD-SCDMA data communication cards currently on the market are all aimed at the Internet application of PCs and notebook computers, and generally adopt PCMCIA interface, which is large in size and cannot be used in portable products with SD card expansion slots, and only the data transmission channel does not Voice transmission channel, there is no miniaturized TD-SCDMA communication card that can move online at a high speed for products such as PDA, MP3, PMP, multimedia player, digital camera and digital learning machine. The purpose of the invention is to solve the above problems, and design A miniaturized TD-CDMA communication card with SD card interface, which supports voice and data channels at the same time, and can be inserted into various MP3, MP4, PMP, multimedia players, digital cameras and digital learning machines with SD card sockets, and Laptops and other devices can enable the above devices to have voice and data communication functions based on the TD-SCDMA network by upgrading the host program

Images