RU2216832C2 - All-wave combined antenna - Google Patents

Abstract

FIELD: radio and TV receiving equipment. SUBSTANCE: vibrator displaying capability for change of polarity is connected to folded antenna matched to common load. EFFECT: potential for all-wave reception, increased gain factor and optimal matching of electric characteristics. 1 dwg

Description

 The invention relates to the field of radio-television reception technology and can be used to receive low-power radio and television electromagnetic signals in the frequency range established by the broadcast television network I to V with the corresponding polarization standard.

 There are known television receiving antennas described by Pyasetskiy V. "Universal all-wave antenna // Radio. - 1985. - 7. - P. 17-18. Universal universal wave antenna is capable of receiving signals in any television channel from 1 to 40 and uses a single feeder without application any special addition filters. Part of the antenna for receiving decimeter waves (UHF) is a multi-element "Wave Channel", meter wave (MB) signals are received by a fan vibrator. Addition of the signals takes place at a common load. the MB part of the antenna to the operation mode of the UHF part is excluded due to the use of an open loop and a short-circuited line, and the reverse is due to the segments of two-wire connecting-balancing lines closed to the MB by the active loop vibrator of the UHF part of the antenna.

The disadvantages of this antenna, designed to receive a television signal, are:
1) design complexity;
2) the relative narrowband characteristic of a multi-element antenna type "Wave channel";
3) weak isolation, i.e. the possibility of a mutually shunting effect, eliminated due to the bulky design.

 Known antenna - loop vibrator - Pistolkors loop-vibrator (see Sedov SA "Individual video tools. Reference manual." Kiev: Naukova Dumka, 1990, pp. 102-104. The author took it as a prototype).

 The antenna is made in the form of a metal loop with a cut in the middle, designed to connect an agreed load. The antenna has the necessary electrical characteristics with the inherent disadvantages for the simplest emitters of this type. These are the limited bandwidth design and operating principle. In our case, the antenna is capable of receiving only the UHF TV broadcasting section.

 The technical solution to the problem - obtaining an all-wave reception, increasing the gain - is achieved through new design solutions.

 The technical solution is achieved in that the antenna, made in the form of a loop vibrator, matched to the total load, is equipped with an additional shunt vibrator connected to the inextricable side of the loop vibrator, with the possibility of changing the polarity of the shunt vibrator depending on its type.

 The novelty in the device part is seen in the fact that the additional shunt vibrator, which receives the television MV range, receives and transfers its energy to the total load through the sides of the loop vibrator, which carries out its own, independent reception of the UHF signal.

 The novelty in the device part is seen in the fact that the shunting conductivity of the jumper does not lead to the loss of the useful signal of the MV range, since the value of this conductivity is chosen insignificant, it has a complex complex order and is little related to wave impedances. Therefore, the useful signal to the shunt side does not branch.

 The novelty in the device part is that the “residual” signals, following the principles of superposition induced in the modes of frequency detuning of the vibrators due to the energy of the neighboring range, are summed with the main ones in common mode, thereby compensating for possible losses of mutually shunting and other influences, which is facilitated by the change polarity of connected vibrators depending on their type.

 The novelty in the device part is seen in the fact that the artificial zero point of the shunt bridge, combining both halves of the vibrator, allows mechanical fastening of this design without insulators.

 According to the technical, scientific and patent documentation, no combination of features has been identified, such as in the claimed device, which indicates an inventive step.

 The industrial applicability of the claimed technical solution is seen in the comparative simplicity of manufacture, high electrical performance, the possibility of industrial use and a competitive level. The antenna is illustrated with graphic material containing an electrical circuit and structural elements.

 The drawing shows an all-wave combined antenna.

 AVK-2 consists of: an additional shunt vibrator 1, designed to receive an MV signal, made in a known manner in the form of a linear, fan or other vibrator, a shunt jumper 2, which is an inextricable side of a loop vibrator 3, designed to receive a DMV signal, made in a known manner, the "zero" point "0", which serves to fix the antenna device without the isolator, antenna-feeder device AFU-4, which serves to connect the agreed load Rn-5 to the output of the loop vibrator. It is possible to change the polarity of the vibrator 1 depending on its type.

 The antenna works as follows. The received electromagnetic signal is supplied to the corresponding vibrators 1-3, converted to EMF and summed up to the total agreed load Rн-5, passing in turn, depending on the point of excitation through the structure of vibrators 1-3.

 In this case, the signal branches off to the shunt side, since the resistance of jumper 2 has a characteristic complex order and is significant in magnitude. By changing the polarity of vibrator 1, depending on the type, we achieve optimal matching and common-mode summation of all signals at a common load Rn-5. According to AFU-4, energy is supplied to the consumer.

Claims (1)

 An all-wave combined antenna, consisting of a loop vibrator, matched to the total load, characterized in that it is equipped with a vibrator connected to the loop vibrator with the possibility of changing polarity.