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61. The circuits include low-noise amplifier, power amplifier, mixer, oscillator and passive control circuit such as switch.

62. Based on the conventional Class-E resonant high-frequency power amplifier, a new control scheme used in Active-clamped Class-E inverter for ultra-high frequency induction heating is proposed.

63. A gating circuit of the power amplifier was introduced, this method successfully solutes the high noise defection of present power amplifier.

64. We main product have ACCarr series multi - channel automobile active power amplifier, the home theater, switch power.

65. An improved current-controlled tristate switching power amplifier based on sample-hold strategy is proposed in this paper.

66. PNP planar silicon transistor. Audio power amplifier DC to DC converter.

67. Feedforward is the most ideal way to perform broadband high power amplifier, which can accomplish more stringent linear specifications.

68. The entire circuit is mainly comprised of regulated power supply, preamplifier and power amplifier, among which LM4766 is a stereo audio amplifier using dual power supply application circuit.

69. In intelligent peripheral subsystem, Radio Frequency Front Modules include linear power amplifier, low noise amplifier and detection control circuit.

70. The dynamic force generator is based on the vibration exciter which is used as the actuator to get the needed dynamic force with the corresponding signal generator and power amplifier.

71. A master oscillator power amplifier (MOPA) structured pulsed fiber laser is reported.

72. However, the MC-CDMA system inherits the problem on the higher peak-average power ratio (PAPR) in the OFDM systems(sentence dictionary), which will result in the nonlinear distortion in a high power amplifier (HPA).

73. The development of microwave technology has created a demand for highly linear high power amplifier.

74. The utility model is composed of a guard circuit, an oscillating circuit, a power amplifier circuit, a volume control circuit, an accident noticing circuit, etc.

75. A general approach to analysis of class E tuned power amplifier with anti-parallel diode at switch is presented.

76. The design of microwave power amplifier needs large-signal S parameters, but under most circumstances, the designer only has small-signal S parameters and the static I-V curve.

77. Application of predistortion technology in CDMA2000 system is discussed in this paper. And a practical digital predistortion system is proposed to improve linearity and efficiency of power amplifier.

78. The weight and volume of the power electronics equipment will be minished greatly by using switch-mode power amplifier instead of the traditional linear power amplifier.

79. This paper presents the principles and characteristics of the following modules: power amplifier, phase modulator and up converter, which are used in the transmitter of 1GHz microwave relay system.

80. In the system, an electronic circuit for reducing harmonics of an output signal from a power amplifier in a transmission circuit for a wireless communication device is provided.

81. As the amplifier tuned load circuit, they are able to select the base component cosine pulse to obtain undistorted amplification signal output, so this amp is also known as tuned power amplifier .

82. Based on its transfer characteristic, a new technique for reducing the nonlinearity of RF power amplifier is presented.

83. In the design of hardware, the paper details in introducing the reader circuit and function module, especially the theory and method of design in D-type power amplifier, Manchester code and coil.

84. But the OFDM signal has a large PAPR, which results in the significant nonlinear distortion when it passes through a HPA (high power amplifier), thereby the performances of the system descend.

85. They could also be served as a driver amplifier because of its good dynamic range and linearity and could be associated with another one to build up a wideband high power amplifier.

86. In the controller design section, the design process of the power supply circuit, Hall sensor circuit, control circuit, power amplifier circuit is introduces. iv.

87. In order to get the adaptive ability for the feed-forward power amplifier, this paper presents a design of feedforward power amplifier based on pilot signal with a single-chip microcomputer.

88. The subcircuits consist of the low noise amplifier, RF filter, mixer, driver amplifier, image filter, power amplifier, transmit-receive switch and IF filter and so on.

89. A network synthesis method of microwave solid state power amplifier impedance matching circuit is introduced in this paper.

90. In the orthogonal frequency division multiplexing(OFDM) transmission system, an adaptive pre-distortion method for high power amplifier(HPA) was studied.