An X‐band high‐efficiency GaN load modulated balanced amplifier MMIC
An X‐band high‐efficiency GaN load modulated balanced amplifier monolithic microwave integrated circuit (MMIC) composed of 90° Lange Couplers at radio frequency (RF) input and output, a pair of balanced power amplifier (BPA) and a control signal (CS) PA is presented in this article. The impedance of...
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| Published in | Microwave and optical technology letters Vol. 62; no. 6; pp. 2195 - 2201 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Hoboken, USA
John Wiley & Sons, Inc
01.06.2020
Wiley Subscription Services, Inc |
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| Online Access | Get full text |
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| Abstract | An X‐band high‐efficiency GaN load modulated balanced amplifier monolithic microwave integrated circuit (MMIC) composed of 90° Lange Couplers at radio frequency (RF) input and output, a pair of balanced power amplifier (BPA) and a control signal (CS) PA is presented in this article. The impedance of the BPA is modulated by varying the amplitude and phase of the injected CS at same frequency. The prototype has a peak continuous wave output power of 42.5 dBm, with efficiency of 45% to 55% at peak power and 40% to 45% at 6 dB output back‐off over 8 to 11 GHz. The average efficiency for the 37.2 dBm output power is 40%, with adjacent channel leakage ratio of −32 dBc without digital predistortion at 10 GHz center frequency. |
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| AbstractList | Abstract
An X‐band high‐efficiency GaN load modulated balanced amplifier monolithic microwave integrated circuit (MMIC) composed of 90° Lange Couplers at radio frequency (RF) input and output, a pair of balanced power amplifier (BPA) and a control signal (CS) PA is presented in this article. The impedance of the BPA is modulated by varying the amplitude and phase of the injected CS at same frequency. The prototype has a peak continuous wave output power of 42.5 dBm, with efficiency of 45% to 55% at peak power and 40% to 45% at 6 dB output back‐off over 8 to 11 GHz. The average efficiency for the 37.2 dBm output power is 40%, with adjacent channel leakage ratio of −32 dBc without digital predistortion at 10 GHz center frequency. An X‐band high‐efficiency GaN load modulated balanced amplifier monolithic microwave integrated circuit (MMIC) composed of 90° Lange Couplers at radio frequency (RF) input and output, a pair of balanced power amplifier (BPA) and a control signal (CS) PA is presented in this article. The impedance of the BPA is modulated by varying the amplitude and phase of the injected CS at same frequency. The prototype has a peak continuous wave output power of 42.5 dBm, with efficiency of 45% to 55% at peak power and 40% to 45% at 6 dB output back‐off over 8 to 11 GHz. The average efficiency for the 37.2 dBm output power is 40%, with adjacent channel leakage ratio of −32 dBc without digital predistortion at 10 GHz center frequency. |
| Author | Tao, Hong‐Qi Wang, Guangnian |
| Author_xml | – sequence: 1 givenname: Guangnian orcidid: 0000-0002-3984-7749 surname: Wang fullname: Wang, Guangnian email: 1807190615@qq.com organization: Nanjing Electronic Devices Institute – sequence: 2 givenname: Hong‐Qi orcidid: 0000-0003-0437-5515 surname: Tao fullname: Tao, Hong‐Qi organization: Nanjing Electronic Devices Institute |
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| Cites_doi | 10.1109/TMTT.2014.2387061 10.1109/LMWC.2016.2559503 10.1109/LMWC.2018.2824560 10.1109/TMTT.2017.2748123 10.1109/TMTT.2012.2189232 10.1109/MWSYM.2018.8439462 10.1109/TMTT.2018.2869571 10.1109/TMTT.2015.2495358 |
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| References_xml | – volume: 26 start-page: 443 issue: 6 year: 2016 end-page: 445 article-title: An efficient broadband reconfigurable power amplifier using active load modulation publication-title: IEEE Microw Wirel Compon Lett – volume: 65 start-page: 5181 issue: 12 year: 2017 end-page: 5191 article-title: RF‐input load modulated balanced amplifier with octave bandwidth publication-title: IEEE Trans Microw Theory Tech – volume: 60 start-page: 1829 issue: 6 year: 2012 end-page: 1839 article-title: Design of adaptive highly efficient GaN power amplifier for octave‐bandwidth application and dynamic load modulation publication-title: IEEE Trans Microw Theory Tech – volume: 66 start-page: 5322 issue: 12 year: 2018 end-page: 5335 article-title: Analysis and design of a Doherty‐like RF‐input load modulated modulated balanced amplifier publication-title: IEEE Trans Microw Theory Tech – volume: 63 start-page: 4273 issue: 12 year: 2015 end-page: 4283 article-title: Theory and implementation of RF‐input outphasing power amplification publication-title: IEEE Trans Microw Theory Tech – volume: 28 start-page: 527 issue: 6 year: 2018 end-page: 529 article-title: A power reconfigurable high‐efficiency X‐band power amplifier MMIC using the load modulated balanced amplifier technique publication-title: IEEE Microw Wirel Compon Lett – volume: 63 start-page: 559 issue: 2 year: 2015 end-page: 571 article-title: The Doherty power amplifier: review and recent solutions and trends publication-title: IEEE Trans Microw Theory Tech – ident: e_1_2_7_2_1 doi: 10.1109/TMTT.2014.2387061 – ident: e_1_2_7_5_1 doi: 10.1109/LMWC.2016.2559503 – ident: e_1_2_7_9_1 doi: 10.1109/LMWC.2018.2824560 – ident: e_1_2_7_6_1 doi: 10.1109/TMTT.2017.2748123 – ident: e_1_2_7_4_1 doi: 10.1109/TMTT.2012.2189232 – ident: e_1_2_7_8_1 doi: 10.1109/MWSYM.2018.8439462 – ident: e_1_2_7_7_1 doi: 10.1109/TMTT.2018.2869571 – ident: e_1_2_7_3_1 doi: 10.1109/TMTT.2015.2495358 |
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| Snippet | An X‐band high‐efficiency GaN load modulated balanced amplifier monolithic microwave integrated circuit (MMIC) composed of 90° Lange Couplers at radio... Abstract An X‐band high‐efficiency GaN load modulated balanced amplifier monolithic microwave integrated circuit (MMIC) composed of 90° Lange Couplers at radio... |
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| SubjectTerms | amplitude control Continuous radiation Efficiency GaN high‐efficiency Integrated circuits LMBA MMIC MMIC (circuits) phase control Power amplifiers Push-pull amplifiers Radio frequency X‐band |
| Title | An X‐band high‐efficiency GaN load modulated balanced amplifier MMIC |
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