CONSTITUTION: The parallel resonating circuit of a dual band comprises: a varactor diode(1) served as a capacitance when the diode(1) is toward the reverse direction and as a short circuit when the diode(1) is toward the forward direction; a resistance for interrupting the inductance element ...
A continuously reconfigurable metasurface reflector based on unit cell mushroom geometry that was integrated with a varactor diode is presented in this pap... D Rotshild,A Abramovich - Electronics (2079-9292) 被引量: 0发表: 2021年 Reconfigurable broadband infrared circularly polarizing reflectors base...
Some presently preferred embodiments utilize a four terminal varactor bridge instead of a single varactor diode. The invention also teaches several significant techniques for improving the bandwidth of the circuitry, thus allowing variation of the frequency of the input signal without significantly ...
a first varactor diode connected between the coupling terminal and a ground terminal, of which capacitance is variable according to the control signal; and a second varactor diode connected between the through terminal and a ground terminal, of which capacitance is variable according to the control ...
The power requirement for this multiplier requires that the diode used have a breakdown voltage in the order of sixty volts and a capacitance of three picofarads. In order to resonate this diode at the output frequency, the inductance should be 0.06 nanohenries. The smallest varactor package ...
varactordiodemonopoleantennaA tunable band-notch printed monopole antenna is presented, exhibiting a wide impedance bandwidth from 1.5 to 5.5 GHz with good impedance matching (VSWR ≤ 2) and a tunable rejected frequency band from 2.38 to 3.87 GHz. The band-notching is achieved by adding an ...
1290718 Semi-conductor devices SIEMENS AG 16 Dec 1969 [17 Sept 1968] 61156/69 Heading H1K A semi-conductor varactor diode has a P+N+N or N+P+P structure in which the doping level of the first region is so high that in use the space charge region at the PN junction extends ...
In addition, means are provided for carrying the direct voltage (V+) to the cathode of the capacitance diode, whereby the series resonance frequency changes according to the control voltage.doi:US5717368 AErkki NiiranenUSUS5717368 * 1996年11月14日 1998年2月10日 Lk-Products Oy Varactor tuned ...
a waveguide resonator which is disposed on the undersurface of the reflective circuit board in the area that includes the window portion, and which is magnetically coupled with the coupling line, and a varactor diode which is inserted between the opposite signal conductor surfaces and of the waveg...
a 2nd diode D2 is connected between the port #3 and a ground, a capacitor which is a component of the /4 phase shift circuit 1 is configured with varactor diodes VD1, VD2, and a voltage is applied to a control terminal CNT2 to select a frequency in matching with the /4 phase shi...