Wireless transmitter and wireless communication chip

A technology for wireless transmitters and signal transmissions, applied in electrical components, automatic power control, transmission systems, etc., can solve problems such as the inability to increase speed and suppress noise, achieve suppression of in-band noise, improve noise suppression capabilities, The effect of improving the output signal-to-noise ratio

Active Publication Date: 2018-05-25
ZHUHAI JIELI TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Based on the above analysis, it is necessary to provide a wireless transmitter and a wireless communication chip for the problem that the t

Method used

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  • Wireless transmitter and wireless communication chip
  • Wireless transmitter and wireless communication chip
  • Wireless transmitter and wireless communication chip

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Embodiment Construction

[0017] The specific implementation manners of the wireless transmitter and the wireless communication chip of the present invention will be described in detail below in conjunction with the accompanying drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0018] The wireless transmitter is an important component of wireless communication equipment. Generally, wireless communication equipment will include: a chip system composed of a wireless receiver and a wireless transmitter for performing wireless signal transmission and reception, and a processor that provides central control. . After the system is powered on, cooperate with the crystal oscillator to provide the system crystal oscillator, and then it can r...

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Abstract

The invention discloses a wireless transmitter. The transmitter comprises a transmitting antenna, a to-be-transmitted signal input module and a cascaded primary phase-locked loop and a cascaded emitting stage phase locked loop. The input end of the primary phase-locked loop is connected to an external crystal oscillator, and the emitting stage phase-locked loop is respectively connected to the transmitting antenna and the to-be-transmitted signal input module. The invention also provides a wireless communication chip applying the above wireless transmitter. Through the cascaded primary phase-locked loop and the transmitter stage phase-locked loop, a single-point modulation mode is adopted to overcome the contradiction between communication speed, PLL bandwidth and noise suppression of a PLL-based directly modulated wireless transmitter, and effects of the noise suppression are improved while expanding phase-locked bandwidth to improve the communication speed.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a wireless transmitter and a wireless communication chip. Background technique [0002] In the field of wireless communication technology, there are mainly two schemes for the realization of direct up-conversion of wireless transmitters, one is based on IQ two-way quadrature modulation up-conversion scheme, and the other is based on PLL (phase-locked loop) direct modulation Up-conversion scheme. The PLL-based direct modulation wireless transmitter has many advantages such as relatively simple structure, low power consumption, and easy integration, which makes it more and more widely used in the field of wireless communication. However, the direct modulation wireless transmitter based on PLL has always had the contradiction between the communication rate, PLL bandwidth and noise suppression, that is, the higher the communication rate, the larger the required PLL ba...

Claims

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Application Information

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IPC IPC(8): H04B1/04H03L7/087H03L7/099
CPCH03L7/087H03L7/099H04B1/04H04B1/0475
Inventor 陈鹏飞
Owner ZHUHAI JIELI TECH
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