APPLICATION SPECIFICATION TITLE ISM 868/915MHZ CERAMIC ANTENNA TABLE OF CONTENTS 1.0 SCOPE 2.0 PRODUCT DESCRIPTION 3.0 APPLICABLE DOCUMENTS 4.0 ANTENNA PERFORMANCE 5.0 MATCHING NETWORK DESRICPTION 6.0 RECOMMENDED REFLOW CONDITION 7.0 RF PERFORMANCE AS A FUNCTION OF IMPLEMENTATION REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION ISM 868/915MHZ CERAMIC ANTENNA 1.0 SCOPE This specification describes the antenna application and surrounding. The information in this document is for reference and benchmark purposes only. Antenna illustrations in this document are generic representations. They are not intended to be an image of any antenna listed in the scope. 2.0 PRODUCT DESCRIPTION 2.1 PRODUCT NAME AND SERIES NUMBER (S) Product name: ISM 868/915MHz Ceramic Antenna Series Number: 208142**** 2.
APPLICATION SPECIFICATION 3.0 APPLICABLE DOCUMENTS DOCUMENT NUMBER DESCRIPTION Sale Drawing (SD) SD-2081420001 Mechanical Dimension of the product Product Specification (PS) PS-2081420001 Product Specification Packing Drawing (PK) PK-2081420001 Product packaging specifications 4.0 ANTENNA PERFORMANCE 4.1 RF TEST CONDITIONS All measurements are done of the antenna mounted on a reference PCB (90*40*0.8mm) with VNA Agilent E5071C and Over-The-Air (OTA) chamber. DUT FIGURE4.1.
APPLICATION SPECIFICATION DUT FIGURE4.1.2 ANTENNA LOADED WITH REFERENCE PCB TESTED IN OTA CHAMBER 4.2 ANTENNA PERFORMANCE DESCRIPTION EQUIPMENT Frequency Range VNA E5071C REQUIREMENT Application 1 Application 2 868-870MHz 902-928MHz Return Loss VNA E5071C < -10 dB < -5 dB Peak Gain (Max) OTA Chamber 1.5dBi 1.
APPLICATION SPECIFICATION 4.3 RETURN LOSS PLOT All measurements in this document are done on a reference PCB in two Applications. FIGURE 4.3.1 RETURN LOSS OF ANTENNA IN FREE SPACE IN TWO APPLICATIONS 4.4 EFFICIENCY PLOT All measurements in this document are done on a reference PCB in two Applications. FIGURE 4.4.1 EFFICIENCY OF ANTENNA IN FREE SPACE IN TWO APPLICATIONS REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION 4.5 2D RADIATION PATTERN All measurements in this document are done on a reference PCB in two Applications. FIGURE 4.5.1 2D RADIATION PATTERN OF ANTENNA AT 868MHZ IN FREE SPACE ON A REFERENCE PCB IN APPLICATION 1 REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION FIGURE 4.5.2 2D RADIATION PATTERN OF ANTENNA AT 915MHZ IN FREE SPACE ON A REFERENCE PCB IN APPLICATION 2 REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No. ISM 868/915MHz Ceramic Antenna Application Specification 7 of 19 CREATED / REVISED BY: CHECKED BY: APPROVED BY: Liu Hai 2018/10/09 Cheng Kang 2018/10/09 Chris Zhong 2018/10/09 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
APPLICATION SPECIFICATION 4.6 3D RADIATION PATTERN All measurements in this document are done on a reference PCB in two Applications as an example to test the radiation pattern. FIGURE 4.6.1 3D RADIATION PATTERN OF ANTENNA AT 868MHZ IN FREE SPACE ON A REFERENCE PCB IN APPLICATION 1 REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION FIGURE 4.6.2 3D RADIATION PATTERN OF ANTENNA AT 915MHZ IN FREE SPACE ON A REFERENCE PCB IN APPLICATION 2 REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No. ISM 868/915MHz Ceramic Antenna Application Specification 9 of 19 CREATED / REVISED BY: CHECKED BY: APPROVED BY: Liu Hai 2018/10/09 Cheng Kang 2018/10/09 Chris Zhong 2018/10/09 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
APPLICATION SPECIFICATION 5.0 MATCHING NETWORK DESRICPTION The recommended matching network shown in Figure 5.1-5.2. FIGURE 5.1 RECOMMENDED MATCHING CIRCUIT SCHEMATIC Component C1 Application 1 Application 2 9 pF 5.6 pF Murata (PN: GRM1555C1H9R0WA01) C2 Murata (PN: GRM1555C1H5R6WA01) 3.3 pF N/A Murata (PN: GRM1555C1H3R3WA01) C3 0Ω 0Ω FIGURE 5.
APPLICATION SPECIFICATION 6.0 RECOMMENDED REFLOW CONDITION Recommended solder paste: ALPHA CAP-390 SAC305 For mechanically challenging applications Molex recommends using surface mount glue (e.g. Loctite 3611) before reflow soldering process, to ensure increased mechanical retention on the PCB. REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION 7.0 RF PERFORMANCE AS A FUNCTION OF IMPLEMENTATION All measurements in this document are done on a reference PCB in two Applications, we selected Application 2 as an example to test RF performance in below items. 7.1 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT LOCATIONS WITH PARALLEL PLANE GROUND Five locations with parallel plane ground have been evaluated and these locations are shown in figure 7.1.
APPLICATION SPECIFICATION FIGURE 7.1.1 RETURN LOSS OF ANTENNA AT FIVE LOCATIONS WITH PARALLEL PLANE GROUND ON A REFERENCE PCB FIGURE 7.1.2 EFFICIENCY OF ANTENNA AT FIVE LOCATIONS WITH PARALLEL PLANE GROUND ON A REFERENCE PCB REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION 7.2 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT LOCATIONS WITH VERTICAL PLANE GROUND Four locations with vertical plane ground have been evaluated and these locations are shown in figure 7.2. The plane ground size is 90mm*90mm and we move the plane ground to four locations for each test. The distance between antenna and vertical plane ground affect the antenna performance slightly.
APPLICATION SPECIFICATION FIGURE 7.2.1 RETURN LOSS OF ANTENNA AT FOUR LOCATIONS WITH VERTICAL PLANE GROUND ON A REFERENCE PCB FIGURE 7.2.2 EFFICIENCY OF ANTENNA AT FOUR LOCATIONS WITH VERTICAL PLANE GROUND ON A REFERENCE PCB REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION 7.3 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT LOCATIONS WITH PARALLEL PLANE GROUND Four locations with parallel plane ground have been evaluated and these locations are shown in figure 7.3. The plane ground size is 90mm*90mm and we move the plane ground to four locations for each test. The distance between antenna and parallel plane ground affect the antenna performance slightly.
APPLICATION SPECIFICATION FIGURE 7.3.1 RETURN LOSS OF ANTENNA AT FOUR LOCATIONS WITH PARALLEL PLANE GROUND ON A REFERENCE PCB FIGURE 7.3.2 EFFICIENCY OF ANTENNA AT FOUR LOCATIONS WITH PARALLEL PLANE GROUND ON A REFERENCE PCB REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No.
APPLICATION SPECIFICATION 7.4 RF PERFORMANCE AS A FUNCTION ON DIFFERENT SIZE GROUD Four kinds of ground plane size were used for this study, which were 70mm*35mm, 90mm*40mm (Reference PCB), 100*60mm and 120*80mm. When customers apply different PCB size ground, new matching network should be used for return loss and efficiency improvement. From the test result we can see the antenna performance is the best using reference PCB size. FIGURE 7.
APPLICATION SPECIFICATION FIGURE 7.4.1 RETURN LOSS OF ANTENNA WITH DIFFERENT PLANE GROUNDS FIGURE 7.4.2 EFFICIENCY OF ANTENNA WITH DIFFERENT PLANE GROUNDS REVISION: B ECR/ECN INFORMATION: TITLE: EC No: DATE: 2018/10/09 DOCUMENT NUMBER: 2081420001 SHEET No. ISM 868/915MHz Ceramic Antenna Application Specification 19 of 19 CREATED / REVISED BY: CHECKED BY: APPROVED BY: Liu Hai 2018/10/09 Cheng Kang 2018/10/09 Chris Zhong 2018/10/09 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
