TW202146914A - Yield detection device of antenna in package devices - Google Patents

Abstract

A yield detection device of antenna in package devices for detecting whether an antenna in package device is qualified product or not comprises a test box, a load board, N standard antennas, and a tester. The test box includes a test window. The load board includes an RF signal wire. The N standard antennas are set at different positions in the test box. The tester includes a signal generator, a signal analyzer, and an operation control unit. The signal analyzer receives a radiated electromagnetic wave emitted by the antenna in package device or a test signal emitted by the N standard antennas, and generates an amplitude signal. The operation control unit receives the amplitude signal and compare the amplitude signal with a preset standard value to determine whether the antenna in package device is qualified.

Description

Package Antenna Yield Inspection Device

The present invention relates to a detection device, in particular to a packaging antenna yield detection device.

Referring to FIG. 11 , the conventional package antenna yield detection device includes an isolation box 110 , a standard antenna 120 and a network analyzer 130 , an opening 111 is formed on the top surface of the isolation box 110 , and the standard antenna 120 is disposed in the isolation box 110 . The box 110 is located on the bottom surface of the isolation box 110 . In conventional package antenna yield testing, an antenna in package (AiP) 140 needs to be installed on a test carrier board 150 , and then the package antenna 140 is aligned with the opening 111 of the isolation box 110 and the test carrier is The board 150 is disposed on the top surface of the isolation box 110, so that the package antenna 140 is located in the opening 111 and faces the standard antenna 120 in the isolation box 110, and the network analyzer 130 is electrically connected to the standard antenna 120 and the package The antenna 140 is used to measure whether the transceiver function of the packaged antenna 140 is normal through the standard antenna 120 .

Today's packaged antennas in 5G systems have beam switching functions, even multi-beam field patterns. However, traditional packaged antenna yield detection devices only detect radiation parameters (such as amplitude) in a single fixed direction, which are not suitable for today's 5G packaged antennas. , it is difficult to only detect radiation parameters in a single direction to meet the needs of packaged antennas in the 5G communication era. On the other hand, if you want to measure the global radiation pattern of each packaged antenna, the detection time of each packaged antenna will increase a lot. Therefore, the global radiation of each packaged antenna will be increased. Field measurement is only suitable for R&D-level testing, not for high-speed yield inspection required by factory manufacturing.

In order to solve the aforementioned shortcomings, the present invention proposes a device that does not need to comprehensively measure the spherical pattern of the packaged antenna, but can quickly detect the yield of the packaged antenna through a plurality of amplitude signals related to the pattern of the packaged antenna.

The packaged antenna yield detection device of the present invention is used to detect whether a packaged antenna is a good product, and includes: a test box with a test window, the test window is used for the electromagnetic wave of the packaged antenna to penetrate into the test box; a test carrier board, including a radio frequency signal line to electrically connect the packaged antenna; N standard antennas, respectively arranged at different positions inside the test box, N is a positive integer greater than or equal to 2; and a test machine, including a signal generator, a signal analyzer and an arithmetic control unit; the radio frequency One end of the signal line is electrically connected to the packaged antenna, and the other end is electrically connected to the signal generator; the signal analyzer is electrically connected to each of the standard antennas, and receives a radiated electromagnetic wave from the packaged antenna through each of the standard antennas, and An amplitude signal is correspondingly generated according to the amplitude of the radiated electromagnetic wave received by each of the standard antennas; the operation control unit is electrically connected to the signal analyzer to receive each of the amplitude signals, and compare each of the amplitude signals with a preset standard value Compare to judge whether the packaged antenna is a good product.

Preferably, each of the standard antennas has a number i, and the signal analyzer generates an amplitude signal Ai of the number i according to the amplitude of the radiated electromagnetic waves received by the standard antennas of the number i, wherein the variable i is Any integer from 1 to N, the arithmetic control unit compares the amplitude signal Ai of the number i with the preset standard value Si of the number i, if the difference between the amplitude signal Ai and the preset standard value Si of each If both are less than a threshold SD(i), the packaged antenna is judged to be a good product.

Another packaged antenna yield detection device is used to detect whether a packaged antenna is a good product, including: A test box with a test window for allowing electromagnetic waves of a packaged antenna to penetrate into the test box a test carrier board, including a radio frequency signal line to electrically connect the packaged antenna; N standard antennas, respectively arranged at different positions inside the test box, N is a positive integer greater than or equal to 2; and a test machine, including a signal generator, a signal analyzer and an arithmetic control unit; the radio frequency One end of the signal line is electrically connected to the packaged antenna, and the other end is electrically connected to the signal analyzer; the signal generator is electrically connected to each of the standard antennas, and transmits a test signal through each of the standard antennas; the signal analyzer transmits a test signal through the The test carrier board and the package antenna receive each test signal, and generate a corresponding amplitude signal according to the amplitude of each test signal; the operation control unit is electrically connected to the signal analyzer to receive each of the amplitude signals, and converts each of the amplitude signals The amplitude signal is compared with a preset standard value to determine whether the packaged antenna is a good product.

Preferably, each of the standard antennas has a number i, the signal generator transmits a test signal of number i through each of the standard antennas of number i, wherein the variable i=1~N, the signal analyzer receives the signal of number i the test signal, and correspondingly generate an amplitude signal Ai of number i according to the received test signal of number i, the arithmetic control unit compares the amplitude signal Ai of number i with the preset standard value Si of number i, if Each difference between the amplitude signal Ai and the preset standard value Si is smaller than a threshold SD(i), and the packaged antenna is judged to be a good product.

Preferably, the test box includes a top plate, a bottom plate and four side plates, the four side plates are arranged around the top plate and the bottom plate, and are respectively connected to the four sides of the top plate and the bottom plate, and the test window is disposed in the the top plate.

Preferably, the present invention includes at least one reflection mirror, which is disposed in the test box and attached to the four side plates respectively.

Preferably, the test carrier board further includes a baseband control line, one end of the baseband control line is electrically connected to the packaged antenna, and the other end is used for receiving a beam switching control signal.

Compared with the prior art, the beneficial effects that the present invention has are:

Use N (N=2, 3, 4, 5...) standard antennas set in the test box and the package antenna to send and receive wireless electromagnetic waves, and use the test machine to compare the N amplitude signals with the preset standard By simply comparing the values, more accurate results can be obtained by measuring from only one angle compared to the traditional technology, and the time spent on packaged antenna testing can be reduced. Whether the quality is qualified or not is not an accurate measurement of the radiation pattern, so the test box of the present invention does not even need to paste expensive absorbing materials, so compared with the traditional antenna pattern measurement, it is more low-cost, easy to build, and can be Mobile advantage.

Referring to FIG. 1 and FIG. 2 , in a first preferred embodiment, the package antenna yield detection device of the present invention is used to detect the yield of an antenna in package device (AiP) 1 , and the present invention includes a test box 2 , a test carrier board 3, N standard antennas 4 and a test machine 5. In the first preferred embodiment, the packaged antenna 1 is used as a transmitting antenna and the N standard antennas 4 are used as a receiving antenna.

The test box 2 is a movable structure, which can be folded and closed to form a flat plate or opened to form a box, or a fixed rectangular box. The test box 2 includes a top plate 21 and a bottom plate. 22 and four side panels 23. The four side plates 23 are disposed around the top plate 21 and the bottom plate 22 and are connected to the four sides of the top plate 21 and the bottom plate 22 respectively. The top plate 21 has a test window 211 for allowing the packaged antenna 1 The emitted electromagnetic waves W penetrate into the test box 2 .

The N standard antennas 4 are respectively arranged at different positions inside the test box 2 at intervals, and N is a positive integer greater than or equal to 2. FIG. 3 shows the implementation with N=3, FIG. 4 shows the implementation with N=4, that is, four standard antennas 4 are arranged on the bottom plate 22 of the test box 2 , and FIG. 5 shows N=8 In the embodiment, four standard antennas 4 are arranged on the bottom plate 22 of the test box 2 , and the other four standard antennas 4 are respectively arranged on the four side plates 23 in the test box 2 .

As shown in FIG. 2 , the testing machine 5 includes a signal generator 51 , a signal analyzer 52 , an arithmetic control unit 53 , a programmable logic controller (PLC) 54 and a power supply 55 . The signal generator 51 , the signal analyzer 52 and the arithmetic control unit 53 are electrically connected to the programmable logic controller 54 respectively.

Please refer to FIG. 1 and FIG. 3 , the test carrier 3 is disposed on the top plate 21 , and a package test base 10 is disposed on the test carrier 3 , and the package test base 10 is used to set the package antenna 1 . The packaged antenna 1 can be exposed on the bottom surface of the packaged test base 10 , and the packaged antenna 1 is fixed at the test window 211 of the test box 2 so that the packaged antenna 1 faces the N pieces arranged in the test box 2 The standard antenna 4 , the signal generator 51 and the arithmetic control unit 53 are arranged on the test carrier 3 . The test carrier board 3 includes a radio frequency signal line 31 and a baseband control line 32 . One end of the radio frequency signal line 31 is electrically connected to the package antenna 1 , and the other end of the radio frequency signal line 31 is electrically connected to the signal generator 51 . The testing machine 5 can also measure the RF conduction characteristic parameters (such as S-parameters) of the packaged antenna 1 through the RF signal line 31. One end of the fundamental frequency control line 32 is electrically connected to the packaged antenna 1. The fundamental frequency The other end of the control line 32 is used to receive a beam switching control signal transmitted by the arithmetic control unit 53, and the beam switching control signal is used to control the beamforming of the packaged antenna 1. In addition, the testing machine 5 can also transmit through the base The frequency control line 32 measures the fundamental frequency characteristic parameters of the packaged antenna 1 (eg DC level verification and supply).

The signal analyzer 52 is electrically connected to each of the standard antennas 4, and receives a radiated electromagnetic wave generated by the packaged antenna 1 through each of the standard antennas 4. Each of the standard antennas 4 has a number i. The signal analyzer 52 An amplitude signal Ai of number i is correspondingly generated according to the amplitude of the radiated electromagnetic wave received by each of the standard antennas 4 of the number i, wherein the variable i is any integer from 1 to N.

The arithmetic control unit 53 compares the amplitude signal Ai of the number i with a preset standard value Si of the number i to detect whether the packaged antenna 1 is a good product. If the difference between the standard values Si is smaller than a threshold value SD(i), the packaged antenna 1 is judged to be of good quality and is a good product; otherwise, it is judged that the packaged antenna 1 is damaged and is a defective product. The reason for this judgment is that the present invention can be applied to the one-by-one inspection process after the packaged antenna is manufactured by the production line. Before mass production, a known good packaged antenna 1 can be selected, and the corresponding number i=1 can be measured through this embodiment. The amplitude signal Ai of ~N, wherein each of the standard antennas 4 receives a radiated electromagnetic wave emitted by the packaged antenna 1 well, the signal analyzer 52 is based on the radiation received by each of the standard antennas 4 numbered i The amplitude of the electromagnetic wave generates the good amplitude signal Ai of the packaged antenna 1 corresponding to the number i=1~N, and is sequentially regarded as the default standard value Si of the number i=1~N, and if the package is a good product Each of the amplitude signals Ai corresponding to the number i measured by the antenna 1 will be approximately the same as each of the preset standard values Si corresponding to the number i. Preferably, each of the amplitude signals Ai may be almost equal to each of the preset standard values Si , relatively, among the amplitude signals Ai measured by the packaged antenna 1 of the non-quality product, at least one or more of them deviate significantly from the preset standard value Si, that is, at least one |Ai-Si| > SD(i), i=any of 1~N.

In addition, the signal analyzer 52 can be a multi-connection port as shown in FIG. 1 , and each of the standard antennas 4 is electrically connected through each connection port. The signal analyzer 52 can also be a single-connection port as shown in FIG. 6 . A 1×N signal switch 521 is connected in series between the N standard antennas 4 and the signal analyzer 52 , so that the signal analyzer 52 is electrically connected to the N standard antennas 4 through the signal switch 521 .

7 is a second preferred embodiment of the present invention. The difference between the second preferred embodiment and the first preferred embodiment is that the N (N=7) standard antennas 4 are used as transmitting antennas and the packaged antenna 1 is used as A receiving antenna, the signal analyzer 52 and the arithmetic control unit 53 are disposed on the test carrier 3, the signal generator 51 is electrically connected to each of the standard antennas 4, and transmits the number i through each of the standard antennas 4 numbered i One end of the RF signal line 31 is electrically connected to the packaged antenna 1, and the other end is electrically connected to the signal analyzer 52. The signal analyzer 52 passes through the test carrier board 3 and The packaged antenna 1 receives the test signal with the number i, and generates an amplitude signal Ai with the number i corresponding to the received test signal with the number i.

Likewise, the arithmetic control unit 53 compares the amplitude signal Ai of the number i with a preset standard value Si of the number i to detect whether the packaged antenna 1 is a good product, if each of the amplitude signals Ai corresponds to the corresponding If the difference between the preset standard values Si is smaller than a threshold SD(i), the packaged antenna 1 is judged to be good, otherwise, it is damaged. In the second preferred embodiment of the present invention, the preset standard value Si is selected from a known good packaged antenna 1, and the amplitude signal Ai corresponding to the number i=1~N is measured through this embodiment, Wherein, the signal generator 51 transmits a test signal of number i through each of the standard antennas 4 of number i, wherein the variable i=1~N, the signal analyzer 52 is based on the good signal of the number i received by the packaged antenna 1 The test signal corresponds to an amplitude signal Ai with a number i, and is sequentially regarded as the predetermined standard value Si with the numbers i=1~N.

Referring to FIG. 8 and FIG. 9 , it is a schematic diagram of a third preferred embodiment of the present invention. Compared with the first or second preferred embodiment, the third preferred embodiment further includes: two reflectors attached to the side plates 23 respectively. mirror 9. The two mirrors can be plane mirrors or concave mirrors, and each of the mirrors 9 is represented by a plane mirror in FIG. 8 , and each of the mirrors 9 is represented by a concave mirror in FIG. The radiation beams deviated to the side plates 23 are reflected to the N standard antennas 4, so that the arithmetic control unit 6 can collect the package antenna 1 through the standard antennas 4 to directly incident or directly incident on various beamforming (beamforming). The reflected various environmental signals are stored to form a big data database, especially when the packaged antenna 1 that has been judged to be defective is received by the N standard antennas 4 from the packaged antenna 1 during various beam switching. The signal is stored, and artificial intelligence (AI) technology is used to conclude that the packaged antenna 1 of the defective product is mostly switched to which beam type error occurs, and thus all packages of the packaged antenna 1 shown in Figure 10 are reversed. Which one or more of the antenna changeover switches 11 to 14 is damaged in the process.

Compared with the prior art, the beneficial effects of the package antenna yield detection device of the present invention are:

(1) Use the N (N=2, 3, 4, 5...) standard antennas 4 set in the test box 2 and the package antenna 1 to send and receive wireless electromagnetic waves, and then use the arithmetic control unit 53 By simply comparing the N amplitude signals Ai with the preset standard value Si, more accurate results can be obtained compared to the prior art technique shown in FIG. On the other hand, since the present invention is used to check whether the quality of the packaged antennas is qualified one by one, rather than accurately measuring the radiation pattern of the packaged antennas, the test box 2 in the present invention does not need Attached to expensive absorbing materials, so it has the advantages of low cost, easy construction and mobility compared to traditional antenna field measurement.

(2) Compared with the conventional technology, it is possible to determine which one or more switches of all the antenna-in-package switching switches 11 to 14 of the antenna-in-package 1 are damaged during the manufacturing process as described above.

However, the above are only examples of the present invention, and should not limit the scope of implementation of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the patent specification are still included in the scope of the present invention. within the scope of the invention patent.

1,140: Package Antenna 10: Package test base 11~14: Encapsulated antenna switch 2: Test box 21: Top plate 211: Test Windows 22: Bottom plate 23: Side panels 3,150: Test carrier board 31: RF signal line 32: Base frequency control line 4,120: Standard Antenna 5: Test machine 51: Signal generator 52: Signal Analyzer 521: Signal switch 53: Operation control unit 54: Programmable logic controller 55: Power supply 9: Reflector 110: Isolation box 111: Opening 130: Network Analyzer Ai: Amplitude signal Si: Preset standard value SD(i): Threshold W: electromagnetic wave

FIG. 1 is a schematic cross-sectional side view of a first preferred embodiment of a package antenna yield detection device according to the present invention. FIG. 2 is a block diagram of the testing machine of the first preferred embodiment. FIG. 3 is a partial schematic view of the first preferred embodiment of the present invention. FIG. 4 is a schematic diagram of the first preferred embodiment of the present invention, illustrating that the number of standard antennas is four. FIG. 5 is a schematic diagram of the first preferred embodiment of the present invention, illustrating that the number of standard antennas is eight. FIG. 6 is a schematic diagram of the first preferred embodiment of the present invention further including a switch. 7 is a schematic cross-sectional side view of a second preferred embodiment of the present invention. FIG. 8 is a schematic diagram of the third preferred embodiment of the present invention further including a plurality of flat mirrors. FIG. 9 is a schematic diagram of a third preferred embodiment of the present invention further including a plurality of concave mirrors. 10 is a schematic diagram of a packaged antenna. FIG. 11 is a schematic diagram of a conventional package antenna yield detection apparatus.

1: encapsulated antenna

10: Package test base

2: Test box

21: Top plate

211: Test Windows

22: Bottom plate

23: Side panels

3: Test carrier board

31: RF signal line

32: Base frequency control line

4: Standard Antenna

5: Test machine

51: Signal generator

52: Signal Analyzer

53: Operation control unit

W: electromagnetic wave

Claims (10)

A packaged antenna yield detection device for detecting whether a packaged antenna is a good product, comprising: a test box, having a test window, the test window is used to allow electromagnetic waves of a packaged antenna to penetrate into the test box; a test carrier board, including a radio frequency signal line to electrically connect the packaged antenna; N standard antennas, respectively arranged at different positions inside the test box, N is a positive integer greater than or equal to 2; and a test machine, including a signal generator, a signal analyzer and an arithmetic control unit; the The packaged antenna is used as a transmitting antenna, and the N standard antennas are used as receiving antennas; one end of the radio frequency signal line is electrically connected to the packaged antenna, and the other end is electrically connected to the signal generator; the signal analyzer is electrically connected to each of the standard antennas, and receiving a radiated electromagnetic wave from the packaged antenna through each of the standard antennas, and correspondingly generating an amplitude signal according to the amplitude of the radiated electromagnetic wave received by each of the standard antennas; the arithmetic control unit is electrically connected to the signal analyzer for receiving each of the amplitude signals, and each of the amplitude signals is compared with a preset standard value to determine whether the packaged antenna is a good product. According to the device for detecting the yield of packaged antennas as claimed in claim 1, each of the standard antennas has a number i, and the signal analyzer generates a corresponding number i according to the amplitude of the radiated electromagnetic waves received by the standard antennas of the number i. An amplitude signal Ai, wherein the variable i is any integer from 1 to N, the arithmetic control unit compares the amplitude signal Ai of the number i with the preset standard value Si of the number i, if each of the amplitude signals Ai and the The differences between the preset standard values Si are all smaller than a threshold SD(i), and the packaged antenna is judged to be a good product. The package antenna yield testing device according to claim 1, wherein the test box comprises a top plate, a bottom plate and four side plates, the four side plates are arranged around the top plate and the bottom plate, and are respectively connected to the top plate and the bottom plate. On the four sides of the bottom plate, the test window is arranged on the top plate. The packaged antenna yield detection device as claimed in claim 3 includes at least one reflection mirror, the at least one reflection mirror is disposed in the test box and attached to the four side boards respectively. According to the package antenna yield detection device as claimed in claim 1, the test carrier further comprises a baseband control line, one end of the baseband control line is electrically connected to the package antenna, and the other end is used for receiving a beam switching control signal. A packaged antenna yield detection device for detecting whether a packaged antenna is a good product, comprising: a test box, having a test window, the test window is used to allow electromagnetic waves of a packaged antenna to penetrate into the test box; a test carrier board, including a radio frequency signal line to electrically connect the packaged antenna; N standard antennas, respectively arranged at different positions inside the test box, N is a positive integer greater than or equal to 2; and a test machine, including a signal generator, a signal analyzer and an arithmetic control unit; the N standard antennas are used as transmitting antennas, and the packaged antenna is used as a receiving antenna; one end of the radio frequency signal line is electrically connected to the packaged antenna, and the other end is electrically connected to the signal analyzer; the signal generator is electrically connected to each of the standard antennas, and transmitting a test signal through each of the standard antennas; the signal analyzer receives each test signal through the test carrier board and the package antenna, and generates a corresponding amplitude signal according to the amplitude of each test signal; the operation control unit The signal analyzer is electrically connected to receive each of the amplitude signals, and each of the amplitude signals is compared with a preset standard value to determine whether the packaged antenna is a good product. The package antenna yield testing device as claimed in claim 6, each of the standard antennas has a number i, the signal generator transmits a test signal of the number i through each of the standard antennas with the number i, wherein the variable i=1~ N, the signal analyzer receives the test signal of number i, and correspondingly generates an amplitude signal Ai of number i according to the received test signal of number i, the arithmetic control unit compares the amplitude signal Ai of number i with the signal of number i The preset standard value Si is compared, and if the difference between each of the amplitude signals Ai and the preset standard value Si is smaller than a threshold SD(i), the packaged antenna is determined to be a good product. The package antenna yield testing device according to claim 6, wherein the test box comprises a top plate, a bottom plate and four side plates, the four side plates are arranged around the top plate and the bottom plate, and are respectively connected to the top plate and the bottom plate. On the four sides of the bottom plate, the test window is arranged on the top plate. The packaged antenna yield detection device as claimed in claim 8, comprising at least one reflection mirror, the at least one reflection mirror is disposed in the test box and attached to the four side boards respectively. According to the package antenna yield detection device according to claim 6, the test carrier further comprises a baseband control line, one end of the baseband control line is electrically connected to the package antenna, and the other end is used for receiving a beam switching control signal.

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