公开(公告)号：US06885341B2

公开(公告)日：2005-04-26

申请号：US10120603

申请日：2002-04-09

申请人： Allen Tran ,  Jordi Fabrega-Sanchez

发明人： Allen Tran ,  Jordi Fabrega-Sanchez

IPC分类号： H01G4/12 ,  G01R27/26 ,  H01G4/33 ,  H01G4/40 ,  H01G7/06 ,  H01L27/08 ,  H01P1/20 ,  H01P1/203 ,  H01P1/205 ,  H01P1/213 ,  H01P1/36 ,  H01P5/04 ,  H01P7/08 ,  H01Q1/00 ,  H01Q1/24 ,  H01Q1/38 ,  H01Q3/44 ,  H01Q9/04 ,  H01Q9/14 ,  H01Q9/16 ,  H01Q9/28 ,  H01Q9/30 ,  H01Q9/42 ,  H01Q13/02 ,  H01Q13/06 ,  H01Q13/08 ,  H01Q13/20 ,  H01Q13/22 ,  H03B5/04 ,  H03B5/08 ,  H03B5/12 ,  H03B5/18 ,  H03B5/36 ,  H03F1/56 ,  H03F3/191 ,  H03H7/01 ,  H03H7/12 ,  H03H7/20 ,  H03H7/38 ,  H03J5/24 ,  H03L1/02 ,  H03L7/18 ,  H04B1/04 ,  H04B1/30 ,  H04B1/40 ,  H04L27/38 ,  H01Q1/36

CPC分类号： G01R27/2694 ,  H01G7/06 ,  H01L27/0808 ,  H01P1/203 ,  H01P1/20336 ,  H01P1/20363 ,  H01P1/20381 ,  H01P1/2039 ,  H01P1/2056 ,  H01P1/213 ,  H01P5/04 ,  H03B5/04 ,  H03B5/124 ,  H03B5/1262 ,  H03B5/1293 ,  H03B5/1841 ,  H03B5/362 ,  H03F1/56 ,  H03F3/191 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/372 ,  H03H7/0123 ,  H03H7/12 ,  H03H7/20 ,  H03J5/246 ,  H03L1/022 ,  H03L7/18 ,  H04B1/0053 ,  H04B1/0458 ,  H04B1/30 ,  H04B1/40

摘要： An inverted-F ferroelectric antenna is provided. The antenna comprises a counterpoise, or groundplane, and an inverted-F structure radiator having a first end connected to the counterpoise. A fixed dielectric material, typically a ceramic or air separates the radiator and the counterpoise. A capacitor, formed from a ferroelectric dielectric is connected between the second end of the radiator and the counterpoise. The capacitor has a variable dielectric constant, and the antenna is resonant at a frequency responsive to the dielectric constant of the capacitor ferroelectric material. Typically, the capacitor includes a dielectric formed from a fixed constant dielectric, together with a ferroelectric dielectric with a variable dielectric constant. A bias voltage feed is used to apply a voltage to the capacitor ferroelectric dielectric. The ferroelectric dielectric has a dielectric constant that varies in response to the applied voltage. In one aspect of the antenna, the capacitor has a capacitance of approximately 0.35 picofarads (pF) at zero volts of bias voltage and a capacitance of approximately 0.29 pf at 40 volts of bias voltage.

摘要翻译： 提供倒F型铁电天线。 天线包括平衡或接地平面以及具有连接到平衡点的第一端的倒F结构的散热器。 固定电介质材料（通常为陶瓷或空气）分离散热器和平衡物。 由铁电电介质形成的电容器连接在散热器的第二端和平衡点之间。 电容器具有可变介电常数，并且天线以对电容器铁电材料的介电常数有响应的频率谐振。 通常，电容器包括由固定恒定电介质形成的电介质以及具有可变介电常数的铁电电介质。 偏置电压馈送用于向电容器铁电电介质施加电压。 铁电介质的介电常数根据施加的电压而变化。 在天线的一个方面，电容器在偏置电压为零伏特时具有大约0.35皮法（pF）的电容，在40伏的偏置电压下的电容约为0.29pf。