High-power radio frequency switch
A radio frequency switch, high-power technology, applied in the field of high-power radio frequency switches, can solve the problems of power bearing capacity and low output power capacity, and achieve the effects of low cost, improved output power capacity, broad application prospects and value
Pending Publication Date: 2018-09-14
南京国博电子股份有限公司
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[0005] The present invention proposes a high-power radio-frequency switch, and its purpose is to provide a high-power radio-frequency switch on the basis of ensuring the insertion loss and isolation performance of the switch, which is significantly High Power RF Switches with Enhanced Output Capabilities
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[0021] A high-power radio frequency switch, including a series unit, a transformer unit and a parallel unit, wherein the input end of the series unit is connected to the RFin radio frequency input signal port, the control end of the series unit is connected to the VC control signal port, and the output end of the series unit is connected to the RFout radio frequency output Signal port; the positive pole i+ of the primary coil of the transformer unit is connected to the RFout RF output signal port, the negative pole i- of the primary coil of the transformer unit is connected to the ground, the positive pole o+ of the secondary coil of the transformer unit is connected to the a port of the parallel unit, and the negative pole of the secondary coil of the transformer unit o- is connected to the ground; the control port of the parallel unit is connected to the VCF control signal port, and the b port of the parallel unit is connected to the ground; the VC control signal and the VCF c...
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The invention relates to a high-power radio frequency switch, which comprises a series unit, a transformer unit and a parallel unit, wherein an input end of the series unit is connected to a radio frequency input signal port, a control end of the series unit is connected to a VC control signal port, and an output end of the series unit is connected to a radio frequency output signal port; a positive pole of a primary coil of the transformer unit is connected to the radio frequency output signal port and a negative pole of the primary coil is connected to the ground, and the positive pole of asecondary coil is connected to the parallel unit and the negative pole of the secondary coil is connected to the ground; a control port of the parallel unit is connected to a VCF control signal port and the other port of the parallel unit is connected to the ground; and a VC control signal and a VCF control signal are a pair of reversed-phase signals. The high-power radio frequency switch has theadvantages that (1) the transformer unit is arranged, and when a turn ratio of the primary coil to the secondary coil is N to 1, the voltage applied to the parallel connection unit is only 1 / N of thevoltage of the radio frequency output port, so that the non-linearity of the parallel unit is effectively reduced, and the output power capability of the switch is remarkably improved; (2) the switchcan be expanded to any single-pole multi-throw or multi-pole multi-throw switch; and (3) the application is flexible, the cost is low, and the application prospect is wide.
Description
technical field [0001] The invention is a high-power radio frequency switch, which belongs to the technical field of integrated circuits. Background technique [0002] Wireless communication is an indispensable part of modern life. Currently, bluetooth and wireless local area network (WLAN), which are widely used in the field of wireless communication, all belong to the time division duplex (TDD) communication system. In these systems, the radio frequency transceiver switch (RF T / R switch) is a key component of the wireless communication system, and its performance determines the performance of many electronic products. [0003] The traditional switch circuit structure is as attached figure 1 As shown, its structure consists of series units and parallel units. Controlled by control signals VC and VCF respectively, VC and VCF are a pair of anti-phase control signals, when VC is high, the series unit is turned on, the parallel unit is turned off, and the radio frequency sig...
Claims
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IPC IPC(8): H03K17/081H03K17/00H03K17/10
CPCH03K17/007H03K17/08116H03K17/107
Inventor 陈亮
Owner 南京国博电子股份有限公司