一、Characteristics
The function of the ceramic diplexer (dielectric diplexer) is to distinguish the frequency range of the input or output signal by using filtering, so as to ensure that two different signal sources do not interfere with each other. The main function of the ceramic diplexer is to allow two different signal sources to share the same transmission medium in order to complete the communication task in a limited space. In radar or satellite communications, the diplexer can achieve simultaneous transmission and reception of signals, improving the efficiency of communication, and is usually used to distinguish the frequency of sending and receiving signals, with bandwidth control capabilities.
The average power of the ceramic diplexer (dielectric diplexer) can withstand up to 20W, and the input/output impedance is 50Ω matching (75Ω needs special description), easy to cascade use; The performance is stable and reliable in the whole temperature range, and meets the requirements of military working environment (-55℃ ~ +85℃). Ceramic double tool has the characteristics of high inhibition, high power, low insertion loss, good thermal stability, low temperature coefficient, surface mounting, small volume, light weight, easy welding and so on.
Dielectric diplexer
二、Model & electrical characteristics
| Ceramic diplexer (dielectric diplexer) type and parameter table |
Part No | Center Frequency (MHz) | Band Width (MHz) | Insertion loss (dB Max ) | Ripple (dB Max) | Return loss (dB Min) | Attenuation (dB Min) | Size(mm) |
CMD810C409~462P05A | TX | 409 | fo±2.5 | 1.5 | 0.5 | 14 | 45@460~465MHz | 42.5*2.0*9.5 |
RX | 462 | fo±2.5 | 1.5 | 0.5 | 14 | 45@40~412MHz |
CMD810C462~409P05A
| TX | 462 | fo±2.5 | 1.5 | 0.5 | 14 | 45@407~412MHz | 42.5*2.0*9.5 |
RX | 409 | fo±2.5 | 1.5 | 0.5 | 14 | 45@460~465MHz |
CMD810C505~485P10B | TX | 505 | fo±5 | 3.0 | 1.8 | 14 | 57@480~490MHz | 42.5*2.0*9.5 |
RX | 485 | fo±5 | 3.0 | 1.8 | 14 | 57@500~510MHz |
CMD10R0033A | TX | 725.5 | fo±22.5 | 3.0 | 2.0 | 13 | 40@758~803MHz | 42.0*17.0*9.5 |
RX | 780.5 | fo±22.5 | 3.0 | 2.0 | 13 | 40@703~748MHz |
CMD10R0079A | TX | 874.5 | fo±5.5 | 5 | 2.0 | 17 | 55@824~835MHz | 40.5*23.0*7.0 |
RX
| 829.5 | fo±5.5 | 2.2 | 2.0 | 17 | 50@869~880MHz |
CMD10R0005A | TX | 1817.5 | fo±12.5 | 3.2 | 1.0 | 17 | 45@1710~1735MHz | 34.0*19.0*7.3 |
RX
| 1722.5 | fo±12.5 | 3.0 | 1.0 | 17 | 45@1805~1830MHz |
| CMD10R0007A | TX | 2140 | fo±30.0 | 2.8 | 1.0 | 17 | 45@1920~980MHz | 34.0*19.0*7.3 |
RX
| 1950 | fo±30.0 | 3.0 | 1.0 | 17 | 50@2110~2170MHz |
| CMD10R0008A | TX | 1885 | fo±25.0 | 3.0 | 1.0 | 17 | 55@1710~1785MHz | 33.018.0*7.3 |
RX
| 1760 | fo±25.0 | 3.0 | 1.0 | 17 | 45@1830~1880MHz |
| CMD7R0027A | TX | 881.5 | fo±12.5 | 1.4 | 0.8 | 17 | 30@ 824~849MHz | 25.0*12.8*7.0 |
RX
| 836.5 | fo±12.5 | 1.2 | 0.4 | 17 | 20@894~960MHz |
| CMD8R0012A | TX | 1842.5 | fo±37.5 | 1.4 | 1.1 | 16 | 30@1710~1784MHz | 25.0*10.8*7.0 |
RX
| 1747.5 | fo±37.5 | 1.5 | 1.1 | 16 | 25@1880~2690MHz |
| CMD8R0029A | TX | 1962.5 | fo±32.5 | 2.0 | 2.0 | 17 | 30@1850~1910MHz | 25.0*10.8*7.0 |
RX
| 1882.5 | fo±32.5 | 1.5 | 1.0 | 17 | 15@1930~1995MHz |
| CMD8R0028A | TX | 2155 | fo±45.0 | 1.0 | 0.4 | 17 | 45@1710~1780MHz | 25.0*10.8*7.0 |
RX
| 1745 | fo±35.0 | 0.8 | 0.3 | 17 | 35@2110~1200MHz |
| Note: Due to many product models, only some representative models are listed in the table |
三、Application & attentione
Ceramic diplexers (dielectric diplexers) are widely used in T/R components, base stations, RF microwave, drones, radar, Wi-Fi, repeater, mobile communications and electronic products with bandwidth control and duplex communication capabilities. Products should be stored in the ambient temperature of -10℃~40℃, relative humidity is not more than 80%, the surrounding environment is not acidic, alkaline and other harmful gases in the warehouse. Note that the grounding end is well grounded, otherwise out-of-band suppression and flatness indicators will be affected. If reflow welding is used, the recommended temperature is recommended, and wave soldering is not recommended. Do not soak when cleaning, it is recommended to wipe with alcohol.
Ceramic duplexers are flexible in design and can be customized according to customer requirements. The company has a variety of sizes of ceramic diplexers (dielectric diplexers) for users to choose from, can be customized from 300MHz to 10GHz ceramic diplexers. Because the indicators of microwave components are related to each other and sound to each other, the user needs to clearly state the indicator requirements before customization. This kind of product belongs to the relatively strong customization of the product, the product has been made, it cannot be changed. If there are indicators that exceed the physical limit of the material itself, the best indicators can be achieved through negotiation between the two parties.
