RU2216833C2 - Combined single-dipole antenna - Google Patents

Abstract

FIELD: equipment for reception of TV signals. SUBSTANCE: salient feature of invention lies in coaxial placement of double folded dipole in folded dipole. Straps of folded dipole are connected to external sides of double folded dipole and additional band expanding dipoles are coupled to sides of folded dipole to obtain capability of polarity change. EFFECT: all-wave reception. 1 dwg

Description

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

 Known television receiving antennas described by Pyasetskiy V. Universal all-wave antenna // Radio. - 1965. - 7. - C.17-18. The universal all-wave antenna is capable of receiving signals in any television channel from 1 to 40 and uses a single feeder without the use of any special addition filters. Part of the antenna for receiving decimeter waves (UHF) is a multi-element "Wave channel", the signals of meter waves (MB) are received by a fan vibrator. The addition of signals occurs at a common load. In this case, the mutual shunting effect of the MB part of the antenna on the operation mode of the UHF part is eliminated due to the use of an open loop and a short-circuited line, and the reverse - due to the segments of two-wire connecting-balancing lines closed to the MB by an 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.

 A known antenna (see Kismereshkin V.P. Television antennas for individual reception. 2nd ed., Revised and enlarged M: Radio and communications, 1962, p. 15-16 (Cash radio library. Issue 1050. Analog ). This is a modified symmetric half-wave vibrator, which is a type of Pistolkors loop-vibrator. The author named a double loop Pistolkors vibrator - SPVP. The antenna has improved electrical characteristics with inherent disadvantages for the simplest radiators of this type.

 Such disadvantages are the limited design and operating principle of the bandwidth. In our case, the antenna is capable of receiving only the DMV section of the TV broadcast.

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

 The technical solution is achieved by the fact that the antenna, made in the form of a double loop Pistolkors vibrator, matched to the total load, being an internal SPVP, is coaxially placed in an additional shunt loop vibrator (DSVP), the shunt jumpers of which are connected to the outer sides of the SPVP, and the additional vibrators expand the strip strip (DVRP) - to the sides of the DShPV.

 The novelty in the device part is seen in the fact that additional band expansion vibrators, which allow simultaneous reception of the low-frequency (LF) part of the MB range, receive and transmit their energy to the sides of the DSHW, which independently receives the high-frequency channels of the MV sub-band, sending the total a signal for the total agreed load through the structure of the SPVP, leading its own, independent reception of the UHF signal. The novelty in the device part is seen in the fact that the reactance of the DSHV shunt jumper, which is a complexly complex characteristic order, is little related to wave impedances and is calculated quite significant in magnitude, which does not have a shunting effect on the signals received by the DVRP and the SSD. Therefore, the useful signals of the LF and HF - MV subbands towards the shunting conductive surfaces of these signals of the DSHPV shunt jumper and the sides of the SPVP - do not branch.

 The novelty in the device part is that in addition to the partial constructive isolation of the vibrators, compensation is also possible for the losses of the mutual shunt due to the so-called "residual" signals induced in the detuning modes on the "free" vibrators, which, following the principles of superposition, sum the energy of the signals of the neighboring range with the main one in the optimal phase mode, which is facilitated by a change in the polarity of the vibrators depending on their type.

 The novelty in the part of the device is seen in the fact that in addition to the main neutral point of the DShPV, which made it possible to mount the vibrator directly, without insulators, there is a second additional “zero” point located in the center of the shunt jumper of the DShPV.

 According to the technical, scientific, patent documentation, a totality of features such as those in the claimed device has not been revealed, which indicates an inventive step.

 The industrial applicability of the claimed technical solution is seen in the extreme simplicity of manufacture, high electrical performance, the possibility of using it on an industrial basis and at a competitive level that have proved themselves as a result of long-term operation of prototypes.

 The antenna is illustrated with graphic material containing an electrical circuit and structural elements.

 The drawing shows a combined monovibrator antenna (AKM).

 AKM consists of additional vibrators 1 of the expansion of the strip, transforming the meter part of the range of the TV signal, made in a known manner in the form of a linear, fan or other vibrators connected to the side 2 sides of an additional shunt loop vibrator 3, the shunt jumpers 4 of which are connected to the outer sides 5 of the dual loop vibrator 6, made in a known manner and responsible for the energy inversion of the signals MB and UHF of the TV bands, respectively, of the agreed load 7. I polarity vibrators. The antenna device is mounted at zero points "0".

 The antenna works as follows. The received electromagnetic signal is supplied to the corresponding vibrators 1, 3, 6, converted to EMF and added to the total agreed load 7, passing in turn depending on the place of excitation through the structure of the vibrators 2, 4, 5.

 In this case, the useful signal does not branch to the shunt side, since the resistance of the jumper 4 of the DCB and the external side of the 5th SPVP is characteristic, complex, and large enough. By changing the polarity of vibrator 1, we achieve optimal matching and common-mode summation of all signals at a common load 7.

Claims (1)

 Combined monovibrator antenna, consisting of a double loop vibrator, matched to the total load, characterized in that the double loop vibrator is coaxially located in the loop vibrator, the jumpers of which are connected to the outer sides of the double loop vibrator, and the additional strip expansion vibrators are on the sides of the loop vibrator with the ability to change polarity.