RF transceiver circuit system

Abstract

The invention discloses an RF (radio frequency) transceiver circuit system. The system comprises an on-chip circuit and a matching circuit connected with the on-chip circuit; the matching circuit is in circuit connection with the on-chip circuit through a first port, a second port and a third port; the on-chip circuit comprises a transmitter circuit and a receiver circuit in circuit connection with the transmitter circuit; the first port is in circuit connection with a voltage stabilizer of a receiver and a voltage stabilizer of a transmitter respectively; the second port is in circuit connection the voltage stabilizer of the transmitter and a first-stage amplifier respectively; and the third port is in circuit connection with a second-stage amplifier and a low-noise amplifier. According to the invention, the third port just needs to be arranged on a radio frequency signal channel, and only one inductor is adopted in the matching circuit, so that off-chip matching circuit is simplified and the cost of off-chip components BOM (Bill of Material) is reduced.

Description

technical field [0001] The invention relates to a radio frequency circuit technology in the field of wireless communication, in particular to a radio frequency transceiver system circuit. Background technique [0002] At present, the short-distance, low-power and low-cost 2.4GHz radio frequency transceiver chip circuit has been widely used in wireless mouse, wireless keyboard, highway wireless toll collection ETC system, wireless security inspection and control, green energy saving and 2.4GHz mobile payment and other fields . In all these consumer applications, because the demand is huge, the entire terminal controller needs a very low cost to win a fierce market competitive advantage. Apportioned to the RF circuit, its price is calculated at 20-30 cents. Therefore, for these applications, it is of special significance to reduce the entire RF transceiver system. The lower the cost, the stronger the competitive advantage. Currently in the market, companies like Nordic in ...

AI Technical Summary

Problems solved by technology

The disadvantage is that when using a traditional circuit, a matching circuit must be installed, and the off-chip components of the matching circuit occupy a certain circuit layout, which restricts the further miniaturization of the circuit system. At the same time, the off-chip components of the matching circuit increase the cost of the traditional circuit system and reduce the circuit system. market competitiveness

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