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RSS订阅滤波器设计实例band-pass filters.
An efficient method is presented to design coaxial Chebychev band-pass filters. The method involves a 3D full-wave field solver, Ansoft HFSS, teaming up with a circuit simulator, Serenade. The authors show how for a practical case, a 7-pole band pass filter with a ripple of only 0.1 dB, an accurate design is obtained in a matter of days, as opposed to weeks for traditional methods.
The method described is also applicable to even more challenging designs of elliptic filters and phase equalizers realized in dielectric, waveguide or coaxial technology.
2011-08-24
边界条件设置Ansoft HFSS v.9.0 软件分析模块的使用与设置方法
本章主要讲述关于Ansoft HFSS v.9.0 软件分析模块的使用与设置方法。其中包括点频解算设置和扫频解算设置。点频解算设置包括自适应频率设置、收敛标准设置、初始网格选项设置、自适应选项设置和低阶基本函数设置。扫频设置包括属性设置、添加扫频设置和扫扫频特性和类型设置。
2011-08-24
RFIC_Design_Plett
1.1 Introduction 1
1.2 Lower Frequency Analog Design and Microwave
Design Versus Radio Frequency Integrated
Circuit Design 2
1.2.1 Impedance Levels for Microwave and Low-
Frequency Analog Design 2
1.2.2 Units for Microwave and Low-Frequency Analog
Design 3
1.3 Radio Frequency Integrated Circuits Used in a
Communications Transceiver 4
1.4 Overview 6
References 6
2 Issues in RFIC Design, Noise, Linearity, and
Filtering 9
2.1 Introduction 9
2.2 Noise 9
2.2.1 Thermal Noise 10
2.2.2 Available Noise Power 11
2.2.3 Available Power from Antenna 11
2.2.4 The Concept of Noise Figure 13
2.2.5 The Noise Figure of an Amplifier Circuit 14
2.2.6 The Noise Figure of Components in Series 16
2.3 Linearity and Distortion in RF Circuits 23
2.3.1 Power Series Expansion 23
2.3.2 Third-Order Intercept Point 27
2.3.3 Second-Order Intercept Point 29
2.3.4 The 1-dB Compression Point 30
2.3.5 Relationships Between 1-dB Compression and
IP3 Points 31
2.3.6 Broadband Measures of Linearity 32
2.4 Dynamic Range 35
2.5 Filtering Issues 37
2.5.1 Image Signals and Image Reject Filtering 37
2.5.2 Blockers and Blocker Filtering 39
References 41
Selected Bibliography 42
3 A Brief Review of Technology 43
3.1 Introduction 43
3.2 Bipolar Transistor Description 43
3.3 b Current Dependence 46
3.4 Small-Signal Model 47
3.5 Small-Signal Parameters 48
3.6 High-Frequency Effects 49
3.6.1 fT as a Function of Current 51
3.7 Noise in Bipolar Transistors 53
3.7.1 Thermal Noise in Transistor Components 53
3.7.2 Shot Noise 53
3.7.3 1/f Noise 54
6 LNA Design 141
6.1 Introduction and Basic Amplifiers 141
6.1.1 Common-Emitter Amplifier (Driver) 141
6.1.2 Simplified Expressions for Widely Separated
Poles 146
6.1.3 The Common-Base Amplifier (Cascode) 146
6.1.4 The Common-Collector Amplifier (Emitter
Follower) 148
6.2 Amplifiers with Feedback 152
6.2.1 Common-Emitter with Series Feedback (Emitter
Degeneration) 152
6.2.2 The Common-Emitter with Shunt Feedback 154
6.3 Noise in Amplifiers 158
6.3.1 Input-Referred Noise Model of the Bipolar
Transistor 159
6.3.2 Noise Figure of the Common-Emitter Amplifier 161
6.3.3 Input Matching of LNAs for Low Noise 163
6.3.4 Relationship Between Noise Figure and Bias
Current 169
6.3.5 Effect of the Cascode on Noise Figure 170
6.3.6 Noise in the Common-Collector Amplifier 171
6.4 Linearity in Amplifiers 172
6.4.1 Exponential Nonlinearity in the Bipolar
Transistor 172
6.4.2 Nonlinearity in the Output Impedance of the
Bipolar Transistor 180
6.4.3 High-Frequency Nonlinearity in the Bipolar
Transistor 182
6.4.4 Linearity in Common-Collector Configuration 182
6.5 Differential Pair (Emitter-Coupled Pair) and
Other Differential Amplifiers 183
6.6 Low-Voltage Topologies for LNAs and the Use
of On-Chip Transformers 184
2011-07-09
Artech-Microwave.Circuit.Modeling.using.Electromagnetic
Artech-Microwave.Circuit.Modeling.using.Electromagnetic.Field.Simulation-D.G.Swanson
2011-07-09
Finite Element Analysis
Finite Element Analysis, Theory and application with ANSYS, Saeed Moaveni, Prentice Hall, NJ1999
2011-07-09
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