Hsiao et al., 2015 - Google Patents
Key distortion issues and their solutions in direct-conversion transmitters for today's mobile communication systemsHsiao et al., 2015
- Document ID
- 2679327166637404149
- Author
- Hsiao C
- Horng T
- Publication year
- Publication venue
- 2015 Asia-Pacific Microwave Conference (APMC)
External Links
Snippet
In the wireless communication systems, owing to the increasing demands for high data rate and high efficiency, several practical challenges arise in the design of direct-conversion transmitters (DCTs) for system-on-chip (SoC) or system-in-package (SiP) applications …
- 238000006243 chemical reaction 0 title abstract description 13
Classifications
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/204—A hybrid coupler being used at the output of an amplifier circuit
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
-
- H—ELECTRICITY
- H03—BASIC ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11817892B2 (en) | Digital predistortion of signals | |
| US7518445B2 (en) | Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters | |
| US10447209B2 (en) | Apparatus and method for improving efficiency of power amplifier | |
| US9001928B2 (en) | Transmitter first/second digital predistortion and first/second adaption circuitry with feedback | |
| KR101055933B1 (en) | Precompensator for phase-modulated signals with low peak-to-average ratio | |
| US20140199949A1 (en) | Method for improving tx gain in envelope tracking systems | |
| CN102904532A (en) | Transmission circuit, method for adjusting bias voltage and method for providing adaptive bias information | |
| CN108347226B (en) | Envelope tracking method, system and device | |
| US7395039B2 (en) | Transmitter | |
| Kwan et al. | On track for efficiency: Concurrent multiband envelope-tracking power amplifiers | |
| Hammi et al. | On the robustness of digital predistortion function synthesis and average power tracking for highly nonlinear power amplifiers | |
| Kumar et al. | Bandlimited DPD adapted APD for 5G communication | |
| Darraji et al. | RF/DSP codesign methodology of enhanced Doherty amplifiers | |
| Fritzin et al. | Phase predistortion of a class-D outphasing RF amplifier in 90 nm CMOS | |
| Hsiao et al. | Design of a direct conversion transmitter to resist combined effects of power amplifier distortion and local oscillator pulling | |
| Hsiao et al. | Key distortion issues and their solutions in direct-conversion transmitters for today's mobile communication systems | |
| KR20130119089A (en) | Doherty amplify apparatus and method | |
| Dalwadi et al. | Efficient Doherty feed-forward linear power amplifier for CDMA 2000 base-station applications | |
| Boumaiza et al. | Joint circuit-level and digital predistortion strategies for enhancing the linearity-efficiency tradeoff of Doherty power amplifiers | |
| Sun et al. | A modified generalized memory polynomial model for RF power amplifiers | |
| Fang et al. | Design and baseband predistortion of a 43.5 dBm GaN Doherty amplifier for 3.5 GHz WiMAX applications | |
| Imai et al. | Enhancing the Performance and Stability of a Dual Adaptive Biased Doherty Power Amplifier for 5G Mobile Handsets | |
| TWI656728B (en) | Electronic device and envelope tracking method and system | |
| Hoyerby et al. | Band-split forward-path Cartesian feedback for multicarrier TETRA RF power amplifiers | |
| Sundström | Linear transmitter architectures |