(under subclass 700) Subject matter wherein a resonant active antenna includes an elongated portion of appreciable electrical length having lumped inductance or capacity directly in series or shunt with the elongated portion (to modify the standing wave pattern existing along the portion, or to change the effective electrical length of the portion).
(1) Note. The lumped inductance or capacity must be intermediate the ends, at a free end or immediately at the
leadin end of the active antenna for classification herein. Combinations of an active antenna with such inductances or capacitances located in a position remote or separate from the antenna are classified below in subclasses 850+, or where adjustable for tuning the antenna in subclasses 745+, above. In the special case where an adjustable lumped inductance or capacity is located immediately at the leadin end of the active antenna and tunes as well as loads the antenna, classification is in subclass 745 and the subject matter is cross-referenced herein.
(2) Note. For classification herein the inductance or capacitance must be of the lumped type. Where there is included a nonuniformity or other distributed parameter inductance or capacitance, such as a capacity hat classification is not herein, but in subclass 802 for center-fed balance doublets with distributed reactance added to the arms, or in subclass 828 for fractional multiple or full wave type antennas with a nonuniformity for reactive effect, or in subclass 899 for antennas with area increasing means generally.
SEE OR SEARCH THIS CLASS, SUBCLASS:
722, for antennas having a lumped reactance electrical filter located between active sections thereof.
723, for single electrically long linear type antennas adjustable in length for tuning. 731+, and 739+, for traveling wave type antennas and antennas combined with terminating resistances at the remote ends thereof respectively, which may have lumped inductances or capacitances in the active portions thereof.
741+, for high frequency loop type antennas which may have lumped inductance or capacitance in the active portions thereof.
745+, for antennas with variable reactance for tuning.
802, for center-fed balanced doublet antennas with distributed reactance added to the arms thereof. See also (2) Note, above.
806, for center-fed balanced doublet type antennas with bent arms which may modify the inherent inductance or capacitance otherwise present with consequent loading.
807, for center-fed balanced doublet antennas with tapered, thick or enlarged arms which modify the inherent capacities of the antennas.
823, for center-fed balanced doublet type antennas whose length is adjustable.
828, for fractional, multiple, or full wave linear type
antennas with a nonuniformity for reactive effect such as a capacity top. See also (2) Note, above.
850+, for antennas with coupling in general. See also the search notes thereunder for special types of antennas with coupling.
899, for antennas having area increasing means, such as spiniferous or with a metal ball on top of the antennas. See also (2) Note, above.
