This paper researches basic principle of microwave digital phase shifter deeply , reviews different theories of all kinds of microwave digital phase shifter circuit , analyzes loaded - line phase shifter in detail and draws design curves according to formulas . and this paper presents a novel method , which makes use of modeling simulation that software - ansoft serenade 8 . 7 provides to evaluate parameter values of pin diodes through s parameter measurement . then , a kind of 6 - bit digital phase shifter circuit is designed and simulated through software - ansoft serenade 8 . 7 本文對(duì)微波數(shù)字式移相器的基本理論進(jìn)行了較深入的研究;綜述了各種微波數(shù)字式移相器電路的工作原理,著重對(duì)加載線式移相器電路進(jìn)行了理論分析,并根據(jù)計(jì)算公式作出一系列相應(yīng)設(shè)計(jì)曲線;提出利用軟件ansoftserenade8 . 7所提供的測(cè)量數(shù)據(jù)擬合功能,通過測(cè)量s參數(shù)來確定pin二極管等效電路參數(shù)的新穎實(shí)驗(yàn)方法;利用微波電路設(shè)計(jì)軟件ansoftserenade8 . 7對(duì)6位數(shù)字式移相器電路進(jìn)行仿真、優(yōu)化設(shè)計(jì),做出樣品,并對(duì)其性能測(cè)試分析,對(duì)研制微波數(shù)字式移相器具有重要的參考意義。
Five cell circuits are designed , fabricated and tested , including 5 . 625 degree and 45 degree using loaded - line phase shifter , 90 degree using 3db branch - line coupler phase shifter , 90 degree and 180 degree using switched - line with loaded - line phase shifter . according to the testing result of cell circuits , and requirement of ku - band six - bit digital phase shifter , the scheme for ku - band six - bit digital phase shifter is chosen 本文對(duì)5 . 625度和45度相移位采用主線加載的加載線形式,對(duì)90度相移位采用3db支線耦合器形式和加載式的開關(guān)線形式,對(duì)180度相移位采用加載式的開關(guān)線形式,分別進(jìn)行了五個(gè)單元電路的設(shè)計(jì)、制作與測(cè)試。
The loaded - line - type , switched - line - type and reflection - type phase shifters are studied in this thesis . considering the defect of loaded - line phase shifter , a new type of switched - line with loaded - line phase shifter is proposed in this thesis . this design not only make advantageous debugging of circuit , but also minimize phase - error in a given frequency band 本文對(duì)加載線型、開關(guān)線型和反射型移相器進(jìn)行了分析研究,并針對(duì)開關(guān)線型移相器的缺陷,提出了一種加載式的開關(guān)線型移相器設(shè)計(jì)方法,不但便于對(duì)電路進(jìn)行調(diào)試,也減小了一定帶寬內(nèi)的相位誤差。