JPS6029244B2 - frequency synthesizer receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a frequency synthesizer receiver configured to automatically select the optimum direction of an antenna corresponding to a receiving frequency.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A frequency synthesizer receiver according to the present invention will be described below with reference to drawings of embodiments.

FIG. 1 shows an example of the configuration of a frequency synthesizer receiver according to the present invention. In the figure, 1 is an input terminal to which frequency data a from a reception frequency sweeper (not shown) is applied, and 2 is an input terminal to which the frequency data a is applied. This is the memory to be input, and this memory 2
is the frequency memory 2a into which the above frequency data a is input.
In addition, it is provided with a direction memory 2b into which antenna direction data b is input.

Reference numeral 3 designates a coincident signal detector to which the frequency data na extracted from the frequency memory 2a and the frequency data a applied to the input terminal 1 are applied, and both frequency data na, a
It is configured to compare the two and extract the coincidence signal c.

4 is a magnitude comparator to which the direction data d extracted from the direction memory 2b and the direction data b are applied;
It is configured to be driven only when the coincidence signal c from the coincidence signal detector 3 is applied to compare the bidirectional data d and b and extract the comparison (difference) signal e.
5 is a rotator equipped with an antenna 6; 7 is a direction detector for determining the direction of the antenna 6; the direction data b from the direction detector 7 is stored in the direction memory 2b and the size comparison described above; It is applied to the device 4. This direction reader 7
If a potentiometer is installed in the rotator, an A/D converter, or a device that generates a pulse at every predetermined rotation angle of the rotator is installed, a counter can be used. Reference numeral 8 denotes a rotator drive device for driving the rotator 5, which drives the rotator 5 according to the magnitude of the comparison signal e from the magnitude comparator 4 and selects the optimum direction of the antenna 6. It has become.

9 is an input terminal to which a memory command signal g consisting of a memory read command signal and a memory write command signal is applied; 10 is a sweep signal h and a memory signal in response to the memory command signal g applied to the input terminal 9; This is a memory control device that applies signal i to the closing memory 2, and when a coincidence signal c is detected by the coincidence signal detector 3, the coincidence signal c is applied as a bridge stop signal.

In the receiver having such a configuration, when a memory command signal g as a memory write command signal is applied to the input terminal 9, the closing memory 2 responds to the memory signal i from the closing memory control device 10. It is in a writable operating state.

In such a write operation enabled state, each time the frequency data a is applied to the input terminal 1, the frequency data a becomes the frequency data 〆, ``2...''.
The optimum direction data b of the antenna 6 is written in the frequency memory 2a as the direction data d, d.
2... is written into the direction memory 2b as dn. on the other hand,
When a memory command signal g as a memory evacuation command signal is released to the input terminal 9, the end memory 2 receives the sweep signal M from the end memory control device 10, and is therefore in a readable operating state. In such a readable operating state, when frequency data a is applied to input terminal 1, the frequency data a currently in the receiving state is
The coincidence signal c is output from the coincidence signal detector 3 only when the frequency data corresponding to the frequency data is read out from the frequency memory 2a, and this coincidence signal c is applied as a sweep stop signal to the memory control device 101 to control the memory. Device 1
0 is stopped, and the sweep operation of the above-mentioned closing mode IJ2 is also stopped. At this time, direction memory 2b constituting the above-mentioned closing memory 2
The direction data d corresponding to the frequency data f set out from the frequency memory 2a is read out from the frequency memory 2a, and this direction data d is combined with the current direction data b of the antenna 6 read by the direction reader 7 and the magnitude comparator 4. As a result, the rotator 5 is driven by the rotor drive device 8 according to the magnitude of the comparison signal e. Therefore, the antenna 6 coupled to the rotator 5 is stopped in the direction when the direction data d from the direction memory 2b and the direction data b from the direction reader 7 match, so that no voltage is applied to the input terminal 1. The optimum antenna direction corresponding to the frequency data a currently in the receiving state is selected, and the best receiving state can be automatically created. In the above embodiment, one antenna 6 is coupled to the rotator 5, and the rotator 5 is driven by its drive device 8 in accordance with the comparison signal e from the magnitude comparator 4, thereby determining the optimum direction of the antenna 6. In addition to this, multiple receiving antennas are installed in each direction in advance, and reception is performed according to the direction data set from the direction memory. The antenna installed in the optimum direction may be switched and selected in accordance with the frequency data.

In this case, the direction control means for switching and selecting a plurality of receiving antennas sends the direction data d from the direction memory 2b constituting the memory 2 to the gate circuit 11 to which the coincidence signal c is applied as a gate signal, as shown in FIG. In addition to the address designation data, when the direction data d corresponding to the frequency data currently in the receiving state is read out, the antenna switch 12 is driven by the output signal from the gate circuit 11 based on this direction data d, and the antenna switch 12 is driven in the current receiving state. What is necessary is to select a receiving antenna installed in an optimal direction corresponding to a receiving frequency from among a plurality of receiving antennas 6a, 6b, . . . , 6n. In addition, in the above embodiment, the frequency memory 2
A memory control device 10 in which the frequency data a from the automatic sweeper applied to the input terminal 1 when reading the frequency data 〆 from a is applied to the -coincidence signal detector 3, and the coincidence signal is applied as a bridge conduction stop signal. The description has been made using the method of applying the sweep signal h to the terminal pin 2, but in addition to this, as shown in FIG.
3a, 13b, . . . , 13n may be configured so that the signal j output from the memory selector 14 is added to the memory 2 as a read signal.

This corresponds to preset channel selection in the receiver, and the structure and scale of the memory 2 are the same as those shown in FIG.
If the configuration of FIG. 3 and the configuration of FIG. 1 are provided at the same time, it becomes possible to read out necessary direction data regardless of whether the channel selection method is a preset method or a sweep method. As described above, according to the receiver of the present invention, the frequency data corresponding to the receiving frequency currently in the receiving state is read from the storage means, and the direction of the antenna is selected according to the direction data corresponding to this frequency data. With this configuration, it is possible to select the optimum antenna direction corresponding to the reception frequency currently being received, and it is possible to always obtain the best reception condition.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the configuration of a receiver according to the present invention. 1, FIG. 2, and FIG. 3 are main part block diagrams showing other configuration examples of the receiver of the present invention. 2...Memory,
2a... Frequency memory, 2b... Direction memory, 3... Coincidence signal detector, 4... Magnitude comparator, 5... Rotator, 6...
Antenna, 7...Direction reader, 8...
Rotator drive device, 10... Memory control device, 11... Gate circuit, 12... Antenna switch, 13... Station command plow, 14...・・・
Memory selector. Kei, Zusai Z Zu Kyozo Zu

Claims (1)

[Scope of Claims] 1. Storage means for storing a plurality of frequency data and direction data in digital quantities, reading means for reading the direction of the antenna in digital quantities and providing the direction data to the storage means, and a receiving frequency during reception. a comparison means for comparing the frequency data corresponding to the frequency data with the plurality of frequency data, and when a match is detected by the comparison means, the direction data corresponding to the frequency data is read out, and the direction of the antenna is determined according to the direction data. A frequency synthesizer receiver further comprising: control means for controlling a direction to be selected. 2. The direction control means includes a comparator to which the direction data read from the storage means and the current direction data of the receiving antenna are applied, and a rotator coupled to the receiving antenna according to the output of the comparator, and rotates the rotator to determine the optimum direction. Claim 1, characterized in that it includes a rotator drive device that selects
Frequency synthesizer receiver as described in Section. 3. The direction control means includes a gate circuit that gates the direction data read from the storage means, and an antenna switch that selects an antenna installed in an optimal direction from among a plurality of receiving antennas according to the output of this gate circuit. A frequency synthesizer receiver according to claim 1, characterized in that: