An aviation antenna electric pair omnidirectional beacon device

Abstract

The present invention proposes an aviation antenna electric omnidirectional beacon device, comprising a signal receiving unit, a signal modulation module, an upper sideband mixer, a lower sideband mixer, a sideband signal power amplifier, a reference signal power amplifier, a signal duplexer, a reference antenna, and a sideband antenna; the output end of the signal receiving unit is connected to the input end of the signal modulation module, the output end of the signal modulation module is respectively connected to the input end of the upper sideband mixer and the input end of the lower sideband mixer, the output end of the upper sideband mixer is connected to the input end of the sideband signal power amplifier, the output end of the lower sideband mixer is connected to the input end of the reference signal power amplifier, the output end of the sideband signal power amplifier and the output end of the reference signal power amplifier are connected to the signal duplexer, and the output end of the signal duplexer is respectively connected to the reference antenna and the sideband antenna. The present invention greatly improves the anti-interference ability of the aviation antenna electric omnidirectional beacon device and ensures the effective transmission of signals.

Description

Technical Field

[0001] The invention relates to the technical field of beacons, and in particular to an aviation antenna pair omnidirectional beacon device. Background Art

[0002] The basic function of the omnidirectional beacon device is to provide a complex radio signal (including a 30Hz reference phase signal and a 30Hz variable signal phase) to the airborne VOR receiver. After demodulation by the airborne VOR receiver, the VOR direction of the ground VHF omnidirectional beacon relative to the aircraft is tested (based on the magnetic north direction of the aircraft's location, clockwise to the angle between the aircraft and the ground VOR beacon). After obtaining the VOR direction, the pilot can compare and correct it with the preset flight direction to ensure that the aircraft flies or lands along the correct flight route.

[0003] However, conventional omnidirectional beacon devices have many antennas, which are easily affected by each other, have poor anti-interference capabilities, and have high manufacturing costs. Summary of the invention

[0004] The object of the present invention is to solve at least one of the technical drawbacks.

[0005] To this end, the purpose of the present invention is to provide an aviation antenna pair omnidirectional beacon device, in which antennas are not easily affected by each other, have strong anti-interference ability and low manufacturing cost.

[0006] In order to achieve the above-mentioned purpose, the present invention provides an aviation antenna electrical omnidirectional beacon device, comprising a signal receiving unit, a signal modulation module, an upper sideband mixer, a lower sideband mixer, a sideband signal power amplifier, a reference signal power amplifier, a signal duplexer, a reference antenna, and a sideband antenna; the output end of the signal receiving unit is connected to the input end of the signal modulation module, the output end of the signal modulation module is respectively connected to the input end of the upper sideband mixer and the input end of the lower sideband mixer, the output end of the upper sideband mixer is connected to the input end of the sideband signal power amplifier, the output end of the lower sideband mixer is connected to the input end of the reference signal power amplifier, the output end of the sideband signal power amplifier and the output end of the reference signal power amplifier are connected to the signal duplexer, and the output end of the signal duplexer is respectively connected to the reference antenna and the sideband antenna.

[0007] In any of the above solutions, preferably, the circuit structure of the upper sideband mixer is the same as that of the lower sideband mixer.

[0008] In any of the above schemes, it is preferred that the upper sideband mixer includes an oscillator, a mixing chip, and a fine-tuning circuit, the input end of the oscillator is connected to the signal modulation module, the output end of the oscillator is connected to the input end of the mixing chip, and the output end of the mixing chip is connected to the fine-tuning circuit.

[0009] In any of the above solutions, preferably, the frequency mixing chip is of model LTC5562.

[0010] In any of the above schemes, it is preferred that the fine-tuning circuit includes a first inductor, a second inductor, a third inductor, a fourth inductor, a first capacitor, a second capacitor, a first resistor, a second resistor, and an adjustable potentiometer, two ends of the first inductor are respectively connected to the mixing chip, one end of the first inductor is connected to one end of the second inductor and one end of the first capacitor, the other end of the first inductor is connected to one end of the third inductor and one end of the second capacitor, the other end of the first capacitor is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the adjustable potentiometer, the other end of the second capacitor is connected to one end of the second resistor, and the other end of the second resistor is connected to the other end of the adjustable potentiometer.

[0011] In any of the above solutions, preferably, the signal duplexer includes a coupling circuit and a signal duplexer main circuit, and the coupling circuit is connected to the signal duplexer main circuit.

[0012] In any of the above schemes, preferably, the coupling circuit includes a first coupler, a second coupler, a third resistor to an eighth resistor, and a transistor, the first input end of the first coupler is the input end of the coupling circuit, the second input end of the first coupler and the second input end of the second coupler are grounded, the first output end of the first coupler is connected to one end of the third resistor and one end of the fourth resistor, the second output end of the first coupler is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to the first input end of the second coupler, the other end of the fourth resistor is connected to one end of the sixth resistor and the base of the transistor, the first output end of the second coupler is connected to one end of the seventh resistor, the second output end of the second coupler is connected to one end of the eighth resistor, and the emitter of the transistor is the output end of the coupling circuit.

[0013] In any of the above schemes, it is preferred that the signal duplexer main circuit includes a fifth inductor, a sixth inductor, a seventh inductor, a third capacitor-seventh capacitor, and a ninth resistor, one end of the fifth inductor is connected to one end of the third capacitor and one end of the fourth capacitor, the other end of the fifth inductor is connected to the other end of the third capacitor, the other end of the fourth capacitor is connected to one end of the sixth inductor, one end of the ninth resistor, and one end of the sixth capacitor, the other end of the sixth inductor is connected to one end of the fifth capacitor, the other end of the fifth capacitor is grounded, the other end of the sixth capacitor is connected to one end of the seventh inductor, the other end of the seventh inductor is connected to one end of the seventh capacitor, and the other end of the seventh capacitor is grounded.

[0014] In any of the above solutions, preferably, the other end of the ninth resistor is connected to the reference antenna, and the emitter of the transistor is connected to the sideband antenna.

[0015] In any of the above solutions, preferably, the signal modulation module uses a NE564 chip.

[0016] The aviation antenna of the present invention has the following beneficial effects on the omnidirectional beacon device:

[0017] 1. The present invention uses an adjustable potentiometer RP14 to perform fine adjustment, eliminate the influence of the first inductor, the second inductor, and the third inductor on the circuit, ensure the performance balance of the mixer, and further improve the anti-interference ability of the aviation antenna to the omnidirectional beacon device.

[0018] 2. In order to stabilize the output frequency of the signal, the circuit structure of the upper sideband mixer and the lower sideband mixer are the same.

[0019] 3. The coupling circuit of the present invention adopts two couplers to work together, which greatly improves the anti-interference ability of the aviation antenna to the omnidirectional beacon device.

[0020] 4. The circuit components of the present invention are relatively few, the structure is simple, the components are relatively cheap, the cost is low, and it is easy to integrate, and can be widely promoted and used.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural block diagram of the aviation antenna electrical pair omnidirectional beacon device of the present invention;

[0024] Figure 2 It is a circuit schematic diagram of an upper sideband mixer of an aviation antenna electrical pair omnidirectional beacon device of the present invention;

[0025] Figure 3 It is a circuit schematic diagram of a signal duplexer based on an aviation antenna pair omnidirectional beacon device of the present invention;

[0026] In the figure, 1, signal receiving unit; 2, signal modulation module; 3, upper sideband mixer; 4, lower sideband mixer; 5, sideband signal amplifier; 6, reference signal amplifier; 7, signal duplexer; 8, reference antenna; 9, sideband antenna; DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The present invention provides an aviation antenna electric pair omnidirectional beacon device, such as Figure 1-3 As shown, it includes a signal receiving unit 1, a signal modulation module 2, an upper sideband mixer 3, a lower sideband mixer 4, a sideband signal power amplifier 5, a reference signal power amplifier 6, a signal duplexer 7, a reference antenna 8, and a sideband antenna 9; the output end of the signal receiving unit 1 is connected to the input end of the signal modulation module 2, the output end of the signal modulation module 2 is respectively connected to the input end of the upper sideband mixer 3 and the input end of the lower sideband mixer 4, the output end of the upper sideband mixer 3 is connected to the input end of the sideband signal power amplifier 5, the output end of the lower sideband mixer 4 is connected to the input end of the reference signal power amplifier 6, the output end of the sideband signal power amplifier 5 and the output end of the reference signal power amplifier 6 are connected to the signal duplexer 7, and the output end of the signal duplexer 7 is respectively connected to the reference antenna 8 and the sideband antenna 9.

[0029] During operation, after receiving the signal, the signal receiving unit 1 transmits it to the signal modulation module 2 for modulation, and outputs the sideband signal and the reference signal respectively. The sideband signal is output to the upper sideband mixer 3, which mixes the sideband signal with the signal generated by the local oscillator, and then outputs it to the sideband signal amplifier 5 for amplification, and then outputs it to the signal duplexer 7, and finally outputs it from the sideband antenna 9; the reference signal is output to the lower sideband mixer 4, which mixes the reference signal with the signal generated by the local oscillator, and then outputs it to the reference signal amplifier 6 for amplification, and then also outputs it to the signal duplexer 7, and finally outputs it from the reference antenna 8.

[0030] In another embodiment of the present invention, in order to stabilize the output frequency of the signal, the circuit structure of the upper sideband mixer 3 and the lower sideband mixer 4 is the same.

[0031] In another embodiment of the present invention, the upper sideband mixer 3 includes an oscillator, a mixing chip, and a fine-tuning circuit. The input end of the oscillator is connected to the signal modulation module 2, the output end of the oscillator is connected to the input end of the mixing chip, and the output end of the mixing chip is connected to the fine-tuning circuit. The mixing chip is selected as the LTC5562 model.

[0032] The fine-tuning circuit includes a first inductor L14, a second inductor L12, a third inductor L13, a fourth inductor L15, a first capacitor C17, a second capacitor C16, a first resistor R12, a second resistor R13, and an adjustable potentiometer RP14. The two ends of the first inductor are respectively connected to the mixing chip T11, one end of the first inductor L14 is connected to one end of the second inductor L12 and one end of the first capacitor C17, the other end of the first inductor L14 is connected to one end of the third inductor L13 and one end of the second capacitor C16, the other end of the first capacitor C17 is connected to one end of the first resistor R12, the other end of the first resistor R12 is connected to one end of the adjustable potentiometer RP14, the other end of the second capacitor C16 is connected to one end of the second resistor R12, and the other end of the second resistor R12 is connected to the other end of the adjustable potentiometer RP14.

[0033] The present invention uses an adjustable potentiometer RP14 to perform fine adjustment, eliminate the influence of the first inductor L14, the second inductor L12, and the third inductor L13 on the circuit, ensure the performance balance of the mixer, and further improve the anti-interference ability of the aviation antenna to the omnidirectional beacon device.

[0034] The signal duplexer 7 includes a coupling circuit and a main circuit of the signal duplexer 7 , and the coupling circuit is connected to the main circuit of the signal duplexer 7 .

[0035] In another embodiment of the present invention, the coupling circuit includes a first coupler Up1, a second coupler Up2, a third resistor R206-an eighth resistor R210, and a transistor Q13. The first input end of the first coupler Up1 is the input end of the coupling circuit, the second input end of the first coupler Up1 and the second input end of the second coupler Up2 are grounded, the first output end of the first coupler Up1 is connected to one end of the third resistor R206 and one end of the fourth resistor R207, the second output end of the first coupler Up1 is connected to one end of the fifth resistor R205, the other end of the fifth resistor R205 is connected to the first input end of the second coupler Up2, the other end of the fourth resistor R207 is connected to one end of the sixth resistor R208 and the base of the transistor Q13, the first output end of the second coupler Up2 is connected to one end of the seventh resistor R209, the second output end of the second coupler Up2 is connected to one end of the eighth resistor R210, and the emitter of the transistor Q13 is the output end of the coupling circuit.

[0036] The coupling circuit of the present invention adopts the combined action of two couplers, which greatly improves the anti-interference ability of the aviation antenna to the omnidirectional beacon device.

[0037] The main circuit of the signal duplexer 7 includes a fifth inductor L101, a sixth inductor L102, a seventh inductor L103, a third capacitor C201-seventh capacitor C205, and a ninth resistor R306. One end of the fifth inductor L101 is connected to one end of the third capacitor C201 and one end of the fourth capacitor C203. The other end of the fifth inductor L101 is connected to the other end of the third capacitor C201. The other end of the fourth capacitor C203 is connected to one end of the sixth inductor L102, one end of the ninth resistor R306, and one end of the sixth capacitor C202. The other end of the sixth inductor L102 is connected to one end of the fifth capacitor C204. The other end of the fifth capacitor C204 is grounded. The other end of the sixth capacitor C202 is connected to one end of the seventh inductor L103. The other end of the seventh inductor L103 is connected to one end of the seventh capacitor C205. The other end of the seventh capacitor C205 is grounded. The other end of the ninth resistor R306 is connected to the reference antenna 8, and the emitter of the transistor is connected to the sideband antenna 9.

[0038] In another embodiment of the present invention, the signal modulation module 2 uses a NE564 chip.

[0039] It should be noted that the signal modulation module 2, signal receiving unit 1, sideband signal amplifier 5, reference signal amplifier 6 and other components in the present invention are all conventional components in the field. Their internal circuit structure, circuit principles, software, etc. are all disclosed in the field. The use of common components on the market facilitates component maintenance and replacement, which is conducive to reducing costs.

[0040] The aviation antenna electrical omnidirectional beacon device of the present invention adopts a coupling circuit combined with a signal duplexer main circuit to form a new signal duplexer, which greatly improves the anti-interference ability of the aviation antenna electrical omnidirectional beacon device and ensures the effective transmission of signals; in addition, the adjustable potentiometer of the present invention can be fine-tuned to ensure the performance balance of the mixer, further improving the anti-interference ability of the aviation antenna electrical omnidirectional beacon device.

[0041] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aviation antenna-to-omnidirectional beacon device, characterized in that: It includes a signal receiving unit, a signal modulation module, an upper sideband mixer, a lower sideband mixer, a sideband signal power amplifier, a reference signal power amplifier, a signal duplexer, a reference antenna, and a sideband antenna; the output end of the signal receiving unit is connected to the input end of the signal modulation module, the output end of the signal modulation module is respectively connected to the input end of the upper sideband mixer and the input end of the lower sideband mixer, the output end of the upper sideband mixer is connected to the input end of the sideband signal power amplifier, the output end of the lower sideband mixer is connected to the input end of the reference signal power amplifier, the output end of the sideband signal power amplifier and the output end of the reference signal power amplifier are connected to the signal duplexer, and the output end of the signal duplexer is respectively connected to the reference antenna and the sideband antenna; The circuit structure of the upper sideband mixer is the same as that of the lower sideband mixer; The upper sideband mixer comprises an oscillator, a mixing chip, and a fine-tuning circuit, wherein the input end of the oscillator is connected to the signal modulation module, the output end of the oscillator is connected to the input end of the mixing chip, and the output end of the mixing chip is connected to the fine-tuning circuit; The mixing chip is LTC5562; The fine-tuning circuit includes a first inductor, a second inductor, a third inductor, a fourth inductor, a first capacitor, a second capacitor, a first resistor, a second resistor, and an adjustable potentiometer, wherein two ends of the first inductor are respectively connected to the mixing chip, one end of the first inductor is connected to one end of the second inductor and one end of the first capacitor, the other end of the first inductor is connected to one end of the third inductor and one end of the second capacitor, the other end of the first capacitor is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the adjustable potentiometer, the other end of the second capacitor is connected to one end of the second resistor, and the other end of the second resistor is connected to the other end of the adjustable potentiometer; The signal duplexer comprises a coupling circuit and a signal duplexer main circuit, wherein the coupling circuit is connected to the signal duplexer main circuit; The coupling circuit comprises a first coupler, a second coupler, a third resistor to an eighth resistor, and a transistor, wherein a first input end of the first coupler is an input end of the coupling circuit, a second input end of the first coupler and a second input end of the second coupler are grounded, a first output end of the first coupler is connected to one end of the third resistor and one end of the fourth resistor, a second output end of the first coupler is connected to one end of the fifth resistor, another end of the fifth resistor is connected to the first input end of the second coupler, another end of the fourth resistor is connected to one end of the sixth resistor and a base of the transistor, a first output end of the second coupler is connected to one end of the seventh resistor, a second output end of the second coupler is connected to one end of the eighth resistor, and an emitter of the transistor is an output end of the coupling circuit; The signal duplexer main circuit includes a fifth inductor, a sixth inductor, a seventh inductor, a third capacitor-seventh capacitor, and a ninth resistor, one end of the fifth inductor is connected to one end of the third capacitor and one end of the fourth capacitor, the other end of the fifth inductor is connected to the other end of the third capacitor, the other end of the fourth capacitor is connected to one end of the sixth inductor, one end of the ninth resistor, and one end of the sixth capacitor, the other end of the sixth inductor is connected to one end of the fifth capacitor, the other end of the fifth capacitor is grounded, the other end of the sixth capacitor is connected to one end of the seventh inductor, the other end of the seventh inductor is connected to one end of the seventh capacitor, and the other end of the seventh capacitor is grounded; The other end of the ninth resistor is connected to the reference antenna, and the emitter of the transistor is connected to the sideband antenna.

2. The aviation antenna omnidirectional beacon device according to claim 1, characterized in that: The signal modulation module uses a NE564 chip.

Images