JPH07254808A - Antenna multicoupler and its manufacture - Google Patents

Abstract

PURPOSE:To provide the antenna multicoupler and its manufacture in which external connection matching components are not required to attain miniaturization and low cost. CONSTITUTION:A 1st filter having a 1st pass band and a 2nd filter having a 2nd pass band are formed by forming a stray capacitance between an outer conductor and an inner conductor via a dielectric raw material band 4 provided in the vicinity of one opening of resonator holes 2a-2h of a dielectric block, an antenna (ANT) input/output terminal pin 5c is inserted to any resonator hole of a final stage or a first stage of the 1st filter or a 1st stage or a final stage of the 2nd filter, and matching with the connection antenna in this antenna multicoupler is executed by selecting at least any of the pitch among the resonator holes 2a-2h, a gap of the dielectric raw material band 4 or the length of the resonator holes 2a-2h to be a prescribed value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna duplexer using a dielectric block resonator as a transmission / reception filter and a method for manufacturing the same.

[0002]

2. Description of the Related Art In a conventional antenna duplexer composed of a transmission (Tx) side dielectric block resonator and a reception (Rx) side dielectric block resonator, matching between an antenna and a filter connected thereto is This is done by rotating the phase with an inductor line formed on an external board or an external coil.

[0003]

However, in each of these conventional antenna duplexers, external parts are required, which hinders downsizing and cost reduction.

Therefore, according to the present invention, in the antenna duplexer using the dielectric block resonator as the first filter and the second filter, the matching between the antenna and the filter connected thereto is determined by the pitch between the resonator holes and the resonator. This is done by setting at least one of the width of the dielectric zone of the hole (gap between the inner conductor and the outer conductor) and the cavity hole length to a predetermined value, eliminating the need for external matching parts and reducing the size. It is an object of the present invention to provide an antenna duplexer and a method for manufacturing the antenna duplexer, which achieves cost reduction.

[0005]

Means for solving the problems of the present invention are as follows. 1. The dielectric block is provided with a plurality of resonator holes, the resonator holes are provided with inner conductors, the outer surface of the dielectric block is mainly provided with outer conductors, and the resonator holes are provided near at least one side opening. Is provided with a dielectric material zone that divides the outer conductor and the inner conductor, and by forming a stray capacitance between the outer conductor and the inner conductor, adjacent resonators are coupled to each other, and the first pass band is An antenna (ANT) input / output is provided in a resonator hole at either the first stage of the first filter or the second stage having the second pass band, and the first stage or the first stage of the first filter or the first stage or the last stage of the second filter. The terminal pin is inserted, and at least one of the pitch between the resonator holes, the gap between the dielectric regions, and the resonator hole length is provided in the final stage or initial stage of the first filter and the initial stage or final stage of the second filter. Is set to a value, antenna duplexer matching is performed with the connected antenna.

2. The dielectric block is provided with a plurality of resonator holes, the resonator holes are provided with inner conductors, the outer surface of the dielectric block is mainly provided with outer conductors, and the resonator holes are provided near at least one side opening. Is provided with a dielectric material zone that divides the outer conductor and the inner conductor, and by forming a stray capacitance between the outer conductor and the inner conductor, adjacent resonators are coupled to each other, and the first pass band is A first filter having and a second filter having a second pass band are configured,
The antenna (A) is installed in the resonator hole of either the first or last stage of the first filter or the first or last stage of the second filter.
NT) Input / output terminal pins are inserted, and the pitch between the resonator holes and the dielectric material region are arranged so that the final stage or initial stage of the first filter and the initial stage or final stage of the second filter match the connecting antenna. A method of manufacturing an antenna duplexer, characterized in that at least one of the gap and the cavity hole length is set to a predetermined value.

3. A plurality of resonator holes are provided in the dielectric block, inner conductors are provided in these resonator holes, and an outer conductor is mainly formed on the outer surface of the dielectric block except at least around the antenna input / output electrodes. A dielectric element zone for partitioning the outer conductor and the inner conductor is provided near at least one side opening of the resonator hole, and stray capacitance is formed between the outer conductor and the inner conductor to form adjacent resonance. A first filter having a first pass band and a second filter having a second pass band are configured by combining the devices, and the final stage or the first stage of the first filter or the first stage or the final stage of the second filter is connected. An antenna input / output electrode is provided on the outer surface corresponding to any one of the resonator holes, and the final stage or the initial stage of the first filter and the initial stage or the final stage of the second filter are arranged such that the pitch between the resonator holes is Gap body matrix band, at least one resonator hole length is set to a predetermined value, antenna duplexer matching is performed with the connected antenna.

4. A plurality of resonator holes are provided in the dielectric block, inner conductors are provided in these resonator holes, and an outer conductor is mainly formed on the outer surface of the dielectric block except at least around the antenna input / output electrodes. A dielectric element zone for partitioning the outer conductor and the inner conductor is provided near at least one side opening of the resonator hole, and stray capacitance is formed between the outer conductor and the inner conductor to form adjacent resonance. A first filter having a first pass band and a second filter having a second pass band are configured by combining the devices, and the final stage or the first stage of the first filter or the first stage or the final stage of the second filter is connected. An antenna input / output electrode is provided on the outer surface corresponding to any one of the resonator holes, and the final stage or initial stage of the first filter and the initial stage or final stage of the second filter are matched with the connection antenna. The pitch between them resonator holes, gaps dielectric base material strip, a manufacturing method of an antenna duplexer, characterized in that to produce the at least one resonator hole length set to a predetermined value.

[0009]

According to the present invention, since a dielectric material zone is provided in the vicinity of at least one opening of each resonator hole of the dielectric block resonator, the dielectric material zone causes stray capacitance between the inner conductor and the outer conductor. Are formed, and adjacent resonators are coupled to each other. In order to match the first filter or the second filter with the antenna, at least one of the pitch between the resonator holes, the width of the dielectric element zone of the resonator hole, and the resonator hole length is set to a predetermined value. Done by.

[0010]

EXAMPLES Next, examples of the present invention will be described.
1 and 2 show an embodiment of the present invention, in which FIG. 1 is a developed perspective view, and FIG. 2 is a schematic explanatory view of a main part of the configuration. 1 and 2, reference numeral 1 is a dielectric block, and this dielectric block 1 has a plurality of resonator holes 2a.
~ 2h are provided. These resonator holes 2a to 2h
Is provided with an inner conductor to form a plurality of resonators 3a to 3h. An outer conductor is mainly provided on the entire surface of the dielectric block 1. A dielectric element zone 4 for partitioning an outer conductor and an inner conductor is provided near at least one side opening of the resonator holes 2a to 2h. A stray capacitance is formed between the outer conductor and the inner conductor through the dielectric element zone 4, and the adjacent resonators of the adjacent resonators 3a to 3h are coupled to each other.

The plurality of resonators 3a to 3h include a transmitter (Tx) side resonator 10 (3a to 3) d and a receiver (Rx).
It is divided into side resonators 20 (3e to 3h).

First-stage resonator 3 of transmitter (Tx) side resonator 10
a, dielectric-coated input / output terminal pins 5a and 5b are inserted into the resonator holes 2a and 2h of the final-stage resonator 3h of the receiving (Rx) side resonator 20, respectively. An antenna (ANT) input / output terminal pin 5c is inserted into the resonator hole 2d of the final stage resonator 3d of the transmission (Tx) side resonator 10. The antenna (ANT) input / output terminal pin 5c is connected to the reception (R)
It can also be inserted into the first-stage resonator hole 2e of the x) side resonator 20. In addition, the transmitter (Tx) side resonator 10 and the receiver (Rx)
The arrangement of the x) side resonator 20 may be changed.

As described above, in the plurality of resonators 3a to 3h, adjacent resonators are coupled to each other by forming a stray capacitance between the outer conductor and the inner conductor through the dielectric element zone 4. It will be. Further, the transmitting (Tx) side resonator 1 in which the antenna (ANT) input / output terminal pin 5c is inserted.
The final-stage resonator 3d of 0 and the first-stage resonator 3e of the receiving (Rx) side resonator 20 are, in particular, as shown in FIG. 2, a pitch P between the resonator holes and a dielectric constant of the resonator holes. By setting the width of the body region (gap between the inner conductor and the outer conductor) G1, G2 or their cavity hole lengths L1, L2 to a predetermined value, matching with the antenna is performed. That is, when these values change, the circuit constant in the equivalent circuit changes, which brings about the same effect as changing the circuit constant of the conventional external connection matching component.
It is possible to match the antenna and a predetermined resonator.

Next, another embodiment will be described with reference to FIG. 3 is different from the embodiment shown in FIG. 1 in that instead of the input / output terminal pins 5a and 5b and the antenna input / output terminal pin 5c that perform a coupling action, an input / output electrode and an antenna input / output electrode are provided in predetermined resonator holes. It is provided on the outer surface of the corresponding dielectric block.

That is, in the figure, 6a and 6b are input / output electrodes, the periphery of which is partitioned by a dielectric material and electrically insulated from the outer conductor, and the resonator holes 2a and 2b.
Coupling capacitance is obtained between the inner conductor of h and the inner conductor. Reference numeral 6c denotes an antenna input / output electrode, similarly, the periphery of which is partitioned by a dielectric body and electrically insulated from the outer conductor, and the coupling capacitance between the inner conductor of the resonator hole 2d and You can get it.

In this embodiment, other conditions are as follows.
Since it is the same as the embodiment shown in FIG. 1, the same reference numerals are given and the description thereof is omitted. Further, in this embodiment, the antenna input / output electrode 6c is provided in the final stage resonator 3d of the transmission (Tx) side resonator 10, but is provided in the first stage resonator 3e of the reception (Rx) side resonator 20. Good. In addition, the input / output electrode 6
3A and 6b and the antenna input / output electrode 6c are formed such that the front two are bent to the adjacent surface and the rear one is provided only on one outer surface in FIG. As shown in FIG. 5, all of them may be bent to the adjacent surfaces, or all of them may be provided only on one outer surface as shown in FIG.

As in the embodiment shown in FIGS. 3 to 5, the antenna duplexer is configured so as to obtain a coupling capacitance between the inner conductor of a predetermined resonator hole and the input / output electrode and the antenna input / output electrode. Will be further miniaturized.

A filter equivalent circuit of the antenna duplexer according to each embodiment shown in FIGS. 1 and 3 to 5 is as shown in FIG.

In the above embodiment, the shape of the dielectric element zone provided in the vicinity of the opening on one side of the resonator hole is shown in a state of slightly entering the opening of the resonator hole. Since the frequency of the dielectric material zone is adjusted depending on its position and width, the dielectric material zone may be provided at one open end of the resonator hole.
Further, the dielectric material zone provided in the resonator hole may be provided near the opening at both ends of the resonator hole or at the opening end.

[0020]

As described above, according to the present invention, the dielectric material zone is provided near at least one side opening of the resonator hole formed in the dielectric block, and this capacitance zone causes a capacitance between the inner conductor and the outer conductor. The adjacent resonators are coupled to each other, and the matching between the first filter or the second filter and the antenna is determined by the pitch between the resonator holes and the width of the dielectric element zone of the resonator holes. Since at least one of (gap between inner conductor and outer conductor) and resonator hole length is set to a predetermined value, matching parts for external connection are unnecessary, and miniaturization and cost reduction can be achieved. it can.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a schematic explanatory view of a main part of the configuration of the embodiment shown in FIG.

FIG. 3 is a perspective view of another embodiment of the present invention.

FIG. 4 is a perspective view of another embodiment of the present invention.

FIG. 5 is a perspective view of another embodiment of the present invention.

FIG. 6 is a filter equivalent circuit diagram of each embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dielectric block 2a-2h Resonator hole 4 Dielectric field 5a, 5b I / O terminal pin 5c Antenna (ANT) I / O terminal pin 6a, 6b I / O electrode 6c Antenna I / O electrode 10 (3a-3d) Transmission ( Tx) side resonator 20 (3e to 3h) reception (Rx) side resonator

Claims (4)

[Claims] 1. A dielectric block is provided with a plurality of resonator holes, an inner conductor is provided in these resonator holes, and an outer conductor is mainly provided on an outer surface of the dielectric block. At least in the vicinity of the opening on one side, a dielectric material zone that partitions the outer conductor and the inner conductor is provided, and adjacent resonators are coupled by forming a stray capacitance between the outer conductor and the inner conductor, A first filter having a first passband,
A second filter having a second pass band, and a first filter
An antenna (AN) is installed in the resonator hole of either the first or last stage of the filter or the first or last stage of the second filter.
T) The input / output terminal pin is inserted, and the final stage or initial stage of the first filter and the initial stage or final stage of the second filter are
An antenna duplexer in which at least one of the pitch between the resonator holes, the gap of the dielectric material region, and the resonator hole length is set to a predetermined value to match the connection antenna. 2. A dielectric block is provided with a plurality of resonator holes, an inner conductor is provided in these resonator holes, and an outer conductor is mainly provided on an outer surface of the dielectric block. At least in the vicinity of the opening on one side, a dielectric material zone that partitions the outer conductor and the inner conductor is provided, and adjacent resonators are coupled by forming a stray capacitance between the outer conductor and the inner conductor, A first filter having a first passband,
A second filter having a second pass band, and a first filter
An antenna (AN) is installed in the resonator hole of either the first or last stage of the filter or the first or last stage of the second filter.
T) The input / output terminal pin is inserted, and the final stage or initial stage of the first filter and the initial stage or final stage of the second filter are
An antenna duplexer characterized by being manufactured by setting at least one of the pitch between the resonator holes, the gap of the dielectric element region, and the resonator hole length to a predetermined value so as to match the connection antenna. Manufacturing method. 3. The dielectric block is provided with a plurality of resonator holes, the resonator holes are provided with inner conductors, and the outer surface of the dielectric block is provided except at least around the antenna input / output electrodes. An outer conductor is mainly provided, and a dielectric element zone that partitions the outer conductor and the inner conductor is provided near at least one side opening of the resonator hole, and a stray capacitance is formed between the outer conductor and the inner conductor. By so doing, adjacent resonators are coupled to each other to form a first filter having a first pass band and a second filter.
A second filter having a pass band is configured, and the outer surface corresponding to the resonator hole of either the final stage or the initial stage of the first filter or the initial stage or the final stage of the second filter is
An antenna input / output electrode is provided, and the final stage or initial stage of the first filter and the initial stage or final stage of the second filter are
An antenna duplexer in which at least one of the pitch between the resonator holes, the gap of the dielectric material region, and the resonator hole length is set to a predetermined value to match the connection antenna. 4. A dielectric block is provided with a plurality of resonator holes, inner conductors are provided in these resonator holes, and an outer surface of the dielectric block is provided except at least around the antenna input / output electrodes. An outer conductor is mainly provided, and a dielectric element zone that partitions the outer conductor and the inner conductor is provided near at least one side opening of the resonator hole, and a stray capacitance is formed between the outer conductor and the inner conductor. By so doing, adjacent resonators are coupled to each other to form a first filter having a first pass band and a second filter.
A second filter having a pass band is configured, and the outer surface corresponding to the resonator hole of either the final stage or the initial stage of the first filter or the initial stage or the final stage of the second filter is
An antenna input / output electrode is provided, and the final stage or initial stage of the first filter and the initial stage or final stage of the second filter are
An antenna duplexer characterized by being manufactured by setting at least one of the pitch between the resonator holes, the gap of the dielectric element region, and the resonator hole length to a predetermined value so as to match the connection antenna. Manufacturing method.