发明名称 |
Single varactor stack with low second-harmonic generation |
摘要 |
Embodiments include semiconductor devices related to compound varactor circuits. Specifically, a semiconductor device may be constructed of a modified anti-series string of varactor pairs, wherein one varactor in a varactor pair has an effective area larger than the other varactor. Varactor pairs in the anti-series string are arranged such that adjacent varactors coupling varactor pairs have equal effective areas. In some embodiments, the anti-series string may have four varactors (two varactor pairs.) In other embodiments, the anti-series string may have eight varactors (four varactor pairs) or twelve varactors (six varactor pairs). The compound varactor using the modified anti-series string of varactor pairs may be advantageous in reducing second harmonics related to parasitic capacitances in anti-series varactor applications. |
申请公布号 |
US9590669(B2) |
申请公布日期 |
2017.03.07 |
申请号 |
US201615005235 |
申请日期 |
2016.01.25 |
申请人 |
Qorvo US, Inc. |
发明人 |
Wright Peter V. |
分类号 |
H04B1/04;H01L27/08;H01L49/02 |
主分类号 |
H04B1/04 |
代理机构 |
Withrow & Terranova, P.L.L.C. |
代理人 |
Withrow & Terranova, P.L.L.C. |
主权项 |
1. A semiconductor device comprising:
a first port; a second port; and an anti-series string of varactors electrically coupled between the first port and the second port, the anti-series string of varactors comprising:
a first varactor;a second varactor having an anode electrically coupled to an anode of the first varactor;a third varactor having a cathode electrically coupled to a cathode of the second varactor; anda fourth varactor having an anode electrically coupled to an anode of the third varactor wherein the first varactor and fourth varactor each has a first area and the second varactor and third varactor each has a second area, which is different than the first area. |
地址 |
Greensboro NC US |