Zte Corporation

Xi'an Zhongxing New Software Co., Ltd.

Zte Corpration

Huazhang Chen

Xiaojun Cui

Jianli Liu

Jinyuan An

Fan Zhang

Bin Duan

The disclosure discloses an amplifier system and a device The amplifier system includes: at least two stages of amplifiers which are sequentially connected, wherein a static working current value of an N-stage amplifier in the at least two stages of amplifiers is a value obtained by decreasing a first value by a first pre-set multiple, and a static working current value of an (N&#x2212;1)-stage amplifier in the at least two stages of amplifiers is a value obtained by increasing a second value by a second pre-set multiple; the first value is a recommended static working current value corresponding to the N-stage amplifier, wherein N is any integer greater than or equal to 2; and the second value is a recommended static working current value corresponding to the (N&#x2212;1)-stage amplifier. The solution effectively improves power amplification efficiency in a case of guaranteeing a linearity of a power amplification link.

Amplifier system and device

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.

Doherty power amplifier apparatus

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.

Power amplifier device and power amplifier circuit thereof

The present invention discloses a Doherty power amplifier and an implementation method thereof. A peak amplifying circuit of the Doherty power amplifier comprises a radio frequency switching circuit configured to control turn-on of the peak amplifying circuit; wherein a last stage carrier amplifier of a carrier amplifying circuit of the power amplifier uses a HVHBT device, and a last stage peak amplifier of the peak amplifying circuit of the power amplifier uses a GaN device. The present invention avoids the shortcoming when the peak branches in the Doherty power amplifier are turned on ahead of time, decreases power consumption of the peak amplifier and improves the batch efficiency of the whole Doherty power amplifier.

Doherty power amplifier and implementation method thereof

The present invention relates to a power amplifier apparatus and a power amplifier circuit thereof, the power amplifier circuit uses Doherty circuit structure, and it uses a high voltage heterojunction bipolor transistor (HVHBT) power amplifier to achieve a Carrier amplifier with the Doherty circuit structure, and uses a high electron mobility transistor (HEMT) power amplifier to achieve 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.

Power amplifier apparatus and power amplifier circuit

The present invention discloses a Doherty power amplifier and a method for implementing the Doherty power amplifier. The Doherty power amplifier includes a peak amplifying branch and a carrier amplifying branch, wherein, the peak amplifying branch includes a radio frequency switch, and the radio frequency switch is configured to control on/off of a last stage peak power amplifier in the peak amplifying branch; wherein, a high voltage heterojunction bipolar transistor (HVHBT) device is adopted for a last stage carrier power amplifier of the carrier amplifying branch, and a laterally diffused metal oxide semiconductor (LDMOS) device is adopted for the last stage peak power amplifier of the peak amplifying branch of the power amplifier. By the present invention, it avoids that the peak power consumption is increased when the peak power amplifier is on ahead of time and enhances the efficiency of the whole power amplifier.

A control method and apparatus of a peak amplifier of a Doherty power amplifier are disclosed, 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 method and apparatus avoid 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.

Growing community of inventors

Shenzhen, China

Huazhang Chen