摘要:
A Doherty power amplifier apparatus and a power amplification method are disclosed in the present invention. The apparatus includes an auxiliary power amplifier apparatus and a main power amplifier apparatus, wherein the auxiliary power amplifier apparatus is configured to amplify signal power by using a Laterally Diffused Metal Oxide Semiconductor (LDMOS) device; the main power amplifier is configured to amplify signal power by using a High voltage heterojunction bipolar transistor (HVHBT) device. An HVHBT device is adopted as a main power amplifier in the present invention. By use of the present invention, a power amplification efficiency of a main power amplifier in a Doherty power amplifier may be enhanced compared with an existing Doherty power amplifier in which both a main power amplifier and an auxiliary power amplifier use LDMOS, thereby a power amplification efficiency of the whole Doherty power amplifier is substantially increased.
摘要:
The present invention relates to a power amplifier apparatus and a power amplifier circuit thereof, the power amplifier circuit uses Doherty circuit structure, and the final stage power amplifier circuit uses high electron mobility transistor (HEMT) power amplifiers to achieve a Carrier amplifier with the Doherty circuit structure and a Peak amplifier with the Doherty circuit structure. The power amplifier apparatus and a power amplifier circuit thereof in the present invention improves the efficiency of the power amplifier.
摘要:
Disclosed in the present disclosure is a Doherty power amplifier, comprising at least one carrier power amplifier and at least one peak power amplifier, which are connected in parallel. Each carrier power amplifier and each peak power amplifier comprise at least one set of carrier power amplification units and at least one set of peak power amplification units, respectively. Each set of carrier power amplification units is connected in parallel for power synthesis, each set of peak power amplification units is connected in parallel for power synthesis, each carrier power amplification unit and each peak power amplification unit comprises a two-way power amplification circuit, each two-way power amplification circuit is connected in parallel for power synthesis, and the two-way power amplification circuits each comprise medium-low power amplification tubes. The medium-low power amplification tubes are power amplification tubes the saturation power of which is less than or equal to a preset threshold. Also disclosed in the present disclosure is a power amplification method.
摘要:
The present invention relates to a power amplifier apparatus and power amplifier circuit thereof, and the power amplifier circuit uses the Doherty circuit structure, and the power amplifier circuit uses high voltage heterojunction bipolor transistor (HVHBT) power amplifiers to achieve a carrier amplifier and a peak amplifier of the Doherty circuit structure. The power amplifier apparatus and power amplifier circuit thereof in the present invention improves the efficiency of the power amplification.
摘要:
The present invention discloses a control method, apparatus of a peak amplifier of a Doherty power amplifier, wherein, the control apparatus includes a Radio Frequency (RF) switching circuit in a peak amplification branch of the Doherty power amplifier, which is used to control the turn-on and turn-off of the peak amplifier in the peak amplification branch. The present invention avoids a disadvantage that the peak branch in the Doherty power amplifier is turned on ahead of time, thus reducing the power consumption of the peak power amplifier, and enhancing the mass efficiency of the whole power amplifier; and largely reducing the product expense and production expense of the power amplifier compared to the scheme of some manufacturers improving on-time of the peak power amplifier using complex digital circuits.
摘要:
The present invention discloses a control method, apparatus of a peak amplifier of a Doherty power amplifier, wherein, the control apparatus includes a Radio Frequency (RF) switching circuit in a peak amplification branch of the Doherty power amplifier, which is used to control the turn-on and turn-off of the peak amplifier in the peak amplification branch. The present invention avoids a disadvantage that the peak branch in the Doherty power amplifier is turned on ahead of time, thus reducing the power consumption of the peak power amplifier, and enhancing the mass efficiency of the whole power amplifier; and largely reducing the product expense and production expense of the power amplifier compared to the scheme of some manufacturers improving on-time of the peak power amplifier using complex digital circuits.
摘要:
A power supply method and device for a radio-frequency power amplifier are provided, which relates to the technical field of Printed Circuit Boards (PCBs). The method includes: drains or collectors, configured to output amplified signals, of each of multiple radio-frequency power amplifier tubes in a radio-frequency power amplifier unit are directly connected through a first microstrip line; the first microstrip line is connected to a second microstrip line configured for radio-frequency output through a blocking capacitor; a grid or base voltage is correspondingly applied to grids or bases of each of the multiple radio-frequency power amplifier tubes respectively; and a drain or collector voltage is correspondingly applied to the drain or collector of one radio-frequency power amplifier tube in the multiple radio-frequency power amplifier tubes, and then the drain or collector voltage is correspondingly applied to the drains or collectors of the other radio-frequency power amplifier tubes in the multiple radio-frequency power amplifier tubes through the first microstrip line respectively. The design is unique in circuit, flexible layout of a PCB may be implemented, and an increasingly sharp conflict between miniaturization and high power may be resolved.
摘要:
Disclosed is a Doherty power amplifier apparatus, including: a drive amplifier circuit, a power splitter circuit and a power combiner circuit, wherein the power splittercircuit is connected to the drive amplifier circuit, the apparatus further comprising: a carrier amplifier circuit and a peak amplifier circuit connected in parallel between the power splitter circuit and the power combiner circuit, wherein the carrier amplifier circuit comprises one or more parallel carrier amplification branches, wherein each carrier amplification branch comprises a multi-stage carrier amplifier apparatus, the multi-stage carrier amplifier apparatus is used for achieving multi-stage carrier amplification; and the peak amplifier circuit comprises one or more parallel peak amplification branches, wherein each peak amplification branch comprises a multi-stage peak amplifier apparatus, the multi-stage peak amplifier apparatus is used for achieving multi-stage peak amplification. In the present invention, the consistency and manufacturability of batch manufacture of power amplifiers are good.
摘要:
The present invention relates to a power amplifier apparatus and power amplifier circuit, and the power amplifier circuit uses the Doherty circuit structure, and uses a high voltage heterojunction bipolor transistor (HVHBT) power amplifier to achieve a Carrier amplifier of the Doherty circuit structure, and uses lateral double-diffused metal oxide semiconductor (LDMOS) to achieve a Peak amplifier. The power amplifier apparatus and power amplifier circuit in the present invention improves the efficiency of the power amplifier.