Unlock instant, AI-driven research and patent intelligence for your innovation.

Mobile terminal for expanding LTE B41 frequency-band bandwidth, and method thereof

A mobile terminal, B41 technology, applied in the field of communication, can solve the problem of high cost of B41 full-band coverage, and achieve the effects of low cost, reduced circuit cost, and low price

Active Publication Date: 2017-08-29
HUIZHOU TCL MOBILE COMM CO LTD
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a mobile terminal and its method for expanding the bandwidth of the LTE B41 frequency band in view of the above-mentioned defects of the prior art, aiming at solving the problem that the existing mobile terminal realizes the high cost of B41 full frequency band coverage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mobile terminal for expanding LTE B41 frequency-band bandwidth, and method thereof
  • Mobile terminal for expanding LTE B41 frequency-band bandwidth, and method thereof
  • Mobile terminal for expanding LTE B41 frequency-band bandwidth, and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention provides a mobile terminal and method for expanding the bandwidth of LTE B41 frequency band, improves the existing circuit supporting B41 full frequency band, and expands the bandwidth of B41 SAW by adding a single-pole double-throw switch to realize B41 full frequency band cover. In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] see figure 2 , in the LTE (Long Term Evolution, 3.9G) frequency band coverage table, the uplink (2500M~2570M) frequency and downlink frequency (2620M~2690M) of B7 (ie BAND7) are included in the frequency band range of B41 (ie BAND41) (2496M~2690M). The uplink frequency band of the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a mobile terminal for expanding the LTE B41 frequency-band bandwidth, and a method thereof. The mobile terminal comprises a multi-mode multi-frequency power amplifier, a TXM module, a selection module, a first SAW filter and a duplexer; when identifying input initial signals as B41 signals, the multi-mode multi-frequency power amplifier judges the frequency-band ranges, which the B41 signals belong to, and outputs B41 transmitting signals; the B41 transmitting signals belonging to the first frequency-band range are output to the TXM module to transmit through a B7 signal duplexer; the B41 transmitting signals belonging to the second frequency-band range are output to the TXM module through the first SAW filter; the B41 transmitting signals belonging to the third frequency-band range are output to the TXM module from the duplexer through channel switching of the selection module; due to the selection module, the B41 signals belonging to the two frequency-band ranges are transmitted by utilization of the B7 signal duplexer; therefore, B41 full-frequency-band coverage is realized; and, because the first SAW filter is cheap, the cost can be reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a mobile terminal and a method for extending the bandwidth of the LTE B41 frequency band. Background technique [0002] At present, in the circuit design of mobile phones, the domestic B41 frequency band uses a SAW (surface acoustic wave) filter with a bandwidth of 100MHz (2555MHz~2655MHz), and the size is 1109 specifications; while in some overseas regions, it is required to support the full frequency band of 194MHz bandwidth (2496MHz~2690MHz) . A 2016 size BAW (Bulk Acoustic Wave) filter or FBAR (Film Bulk Acoustic Resonator) filter must be installed at this time. However, a common SAW filter is smaller in size and cheaper than a BAW filter or an FBAR filter. [0003] The existing circuit diagram supporting B41 full frequency band is as follows figure 1 shown. When transmitting, the 37th pin of the multi-mode multi-frequency PA (power amplifier) ​​is used to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/00H04L5/14
CPCH04B1/0057H04B1/006H04L5/14H03H9/6406H03H9/76
Inventor 王文
Owner HUIZHOU TCL MOBILE COMM CO LTD