完整後設資料紀錄
DC 欄位語言
dc.contributor.author陳建亨en_US
dc.contributor.authorChen, Cheng-Hengen_US
dc.contributor.author周復芳en_US
dc.contributor.authorChristina F. Jouen_US
dc.date.accessioned2014-12-12T02:15:45Z-
dc.date.available2014-12-12T02:15:45Z-
dc.date.issued1995en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#NT840435056en_US
dc.identifier.urihttp://hdl.handle.net/11536/60811-
dc.description.abstract摘要 本論文提出一種改良型微帶線阻抗轉換分歧器用於Ku頻帶(14.4
~14.6GHz)窄頻平衡式功 率放大器. 此分歧耦合器利用平行耦合線取代
原有的四條分支線, 適當的調整平行耦合線之奇偶阻抗以達到所需之低阻
抗; 利用其本身既有的開路特性以達到四個埠之間的直流隔絕.這不但改
善傳統分歧耦合器的T型不連續接面在高頻所激發之高次模電磁場效應,
進而降低了模擬與實驗的誤差率, 相對地電路面積也減少許多. 此外, 利
用阻抗轉換分歧耦合器的阻抗轉換特性, 以降低功率電晶體所需之阻抗轉
換匹配比率, 則匹配電路可予於簡化, 以避免匹配造成之功率損耗, 並且
功率放大器整體電路面積更小, 密度更高, 更適合MMIC化. 此外, 為
了將來邁向MMIC化, 我們規化了一套完整的Chip MESFET和MHEMT小訊號模
型的粹取流程, 以簡單的小訊號模型近似出等效大訊號輸出模型, 適用於
功率放大器的設計; 其中包括用於準確小訊號S參數量測時所採用之TRL
De-embedding方法, 都全部將予以程式模組化.
Abstract In this project, we demonstrate a modified Ku-band
microstrip line impedance -transforming branch-line coupler used
for a narrowband balanced power amplifier. In this new coupler
design, the original four branches of the coupler are replaced
by coupled-lines, and the coupled-lines can be chosen carefully
to obtain the necessary low impedance, and use the inherent open
characteristic to get the DC-isolations between the four ports.
This design not only suppr進而esses the high order-mode
excitations, which result from the discontinui supreesses T-
junctions at high frequencies, it can also make the simulation
mties of and the relative size of the circuit reduced. In
additions, impedance-
tdesign, the overall amplifier circuit area are smaller, high
density, and more suitable for MMIC design. In additions, in
this project, we program a design procedure for the small-signal
model extraction of chip-form MESFET and HEMT. An equivalent
large-signal model using the small-signal parameters is derived,
and included in the power amplifier design. In this project, the
TRL de-embedding method is also discussed for the accuracy
measurement of small-signal S-parameters.
zh_TW
dc.language.isozh_TWen_US
dc.subjectcoupleren_US
dc.titleKu-頻帶平衡式功率放大器使用直流阻絕耦合式阻抗轉換分歧耦合器zh_TW
dc.titleKu-Band Balanced Power Amplifier Using Impedance-Transforming Branch-Line Coupler with DC-Blocking Coupled-Linesen_US
dc.typeThesisen_US
dc.contributor.department電信工程研究所zh_TW
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